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Journal articles on the topic 'Argon'

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Published: 4 June 2021

Last updated: 30 July 2024

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1

Romero, Luciano, Roberto Santorelli, Edgar Sánchez García, Thorsten Lux, Michael Leyton, Silvestro di Luise, Pablo García Abia, et al. "Experimental Study of the Positive Ion Feedback from Gas to Liquid in a Dual-Phase Argon Chamber and Measurement of the Ion Mobility in Argon Gas." Universe 8, no. 2 (February 21, 2022): 134. http://dx.doi.org/10.3390/universe8020134.

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The dynamics of the positive ions created by particle interactions inside argon time projection chambers plays an important role in characterizing the next generation of massive detectors planned for the direct search for dark matter and the study of neutrino properties. We have constructed a 1 L liquid argon chamber (ARION: ARgon ION experiment) with a high voltage pulse generator capable of injecting, in a controlled manner, a sizeable ion current into the drift region. This chamber is capable of reproducing a volume charge similar to that found in large detectors, allowing its effects to be studied systematically. New experimental results regarding ion dynamics in the liquid and direct demonstration of ion feedback from the gas to the liquid are discussed in this paper. In addition, a novel technique to measure the drift velocity of argon ions is introduced along with preliminary results obtained in gas.

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2

McLean, A. D., B. Liu, and J. A. Barker. "Abinitiocalculation of argon–argon potential." Journal of Chemical Physics 89, no. 10 (November 15, 1988): 6339–47. http://dx.doi.org/10.1063/1.455400.

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3

Raeymaekers, B., J. A. C. Broekaert, and F. Leis. "Radially resolved rotational temperatures in nitrogen-argon, oxygen-argon, air-argon and argon ICPs." Spectrochimica Acta Part B: Atomic Spectroscopy 43, no. 8 (January 1988): 941–49. http://dx.doi.org/10.1016/0584-8547(88)80199-x.

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4

Campos-Pires, Rita, Christopher J. Edge, and Robert Dickinson. "Argon." Critical Care Medicine 44, no. 7 (July 2016): 1456–57. http://dx.doi.org/10.1097/ccm.0000000000001680.

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5

Coburn, Mark, Robert D. Sanders, Daqing Ma, Michael Fries, Steffen Rex, Guy Magalon, and Rolf Rossaint. "Argon." European Journal of Anaesthesiology 29, no. 12 (December 2012): 549–51. http://dx.doi.org/10.1097/eja.0b013e328357bfdd.

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6

Mendelson, Brian J., Jeffrey M. Feldman, and Rocco A. Addante. "Argon embolus from argon beam coagulator." Journal of Clinical Anesthesia 42 (November 2017): 86–87. http://dx.doi.org/10.1016/j.jclinane.2017.08.021.

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7

Murphy, A. B., and C. J. Arundelli. "Transport coefficients of argon, nitrogen, oxygen, argon-nitrogen, and argon-oxygen plasmas." Plasma Chemistry and Plasma Processing 14, no. 4 (December 1994): 451–90. http://dx.doi.org/10.1007/bf01570207.

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8

Hoskinson, Alan R., José Gregorío, Jeffrey Hopwood, Kristin Galbally-Kinney, Steven J. Davis, and Wilson T. Rawlins. "Argon metastable production in argon-helium microplasmas." Journal of Applied Physics 119, no. 23 (June 21, 2016): 233301. http://dx.doi.org/10.1063/1.4954077.

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9

Sanders, Robert D., Daqing Ma, and Mervyn Maze. "Argon neuroprotection." Critical Care 14, no. 1 (2010): 117. http://dx.doi.org/10.1186/cc8847.

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10

Baidakov, Vladimir G., Aleksey M. Kaverin, and Valentina N. Andbaeva. "Attainable Superheat of Argon−Helium, Argon−Neon Solutions." Journal of Physical Chemistry B 112, no. 41 (October 16, 2008): 12973–75. http://dx.doi.org/10.1021/jp806048e.

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11

Oh, Jung Jin, Kurt W. Hillig, Robert L. Kuczkowski, and Robert K. Bohn. "Dipole moments of furan-argon and pyrrole-argon." Journal of Physical Chemistry 94, no. 11 (May 1990): 4453–55. http://dx.doi.org/10.1021/j100374a019.

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12

Howard, Robert E., Tracey L. Planck, Susan R. Trussell, and Bram Saadevandi. "Quasiclassical trajectory calculation of argon-argon recombination rates." Chemical Physics Letters 142, no. 1-2 (December 1987): 33–36. http://dx.doi.org/10.1016/0009-2614(87)87245-7.

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13

van Liempt, J. A. M., and S. H. R. Visser. "Der Spektroskopische Nachweis von Argon in Argon-Stickstoffgemischen." Recueil des Travaux Chimiques des Pays-Bas 53, no. 12 (September 3, 2010): 1084–86. http://dx.doi.org/10.1002/recl.19340531203.

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14

Malenkov, G. G. "Molecular Dynamics Simulation of Argon and Argon–Water Systems." Russian Journal of Physical Chemistry A 96, no. 7 (July 2022): 1376–80. http://dx.doi.org/10.1134/s0036024422070214.

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Abstract A molecular dynamics model is created for argon near the critical point. As the temperature falls at a constant density less than critical, It is established that a drop of liquid argon forms in the gas environment. This drop is not spherical, but cylindrical. Liquid argon near the melting point (110 K, density 1.513 g/cm3) is also modeled. The values of the Voronoi polyhedra volumes (VPVs) around argon atoms are calculated and their distribution is plotted. The VPV values lie in the range of 34–55 Å3, with an average value of 43.6 Å3. Argon atoms with low VPV values tend to combine with one another and form branching clusters, as is typical of atoms with high VPV values. Clusters formed by atoms with high and low VPV values are inserted into one another. Issues related to the behavior of argon atoms in argon–water systems are also considered.

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15

Zhang, Lei, Chenkai Qiao, Jingjun Zhu, Yu Liu, Yulu Yan, Shin-Ted Lin, Shukui Liu, Changjian Tang, and Haoyang Xing. "Preparation of Large Volume Solid Argon Crystal and Its Feasibility Test as a Scintillation Material." Crystals 12, no. 10 (October 7, 2022): 1416. http://dx.doi.org/10.3390/cryst12101416.

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An important background to the liquid argon detectors is that they are caused by the diffusion of radioactive isotopes in a scintillator (liquid phase). This radioactive isotope is produced in argon’s surrounding devices, such as circulation pipelines and liquid argon containers. The solid argon as a scintillation material in the detector can inhibit the diffusion and drift of radioactive isotopes in a solid phase scintillator. Additionally, the structure of a solid argon detector is simple and reduces the total source of radioactive background. In the CDEX-300 detection system, solid argon could substitute for liquid argon as the veto detector, preventing radioactive isotopes drifting to the central main detector (HPGe detectors array) surface to reduce backgrounds. Therefore, solid argon has great potential in the experiments since it is especially helpful to get the lower background in a larger active volume than liquid argon required in those low background detection experiments. This work introduces the preparation process and device of the large volume transparent crystalline argon, the acquisition of scintillation light, and the pulse amplitude spectrum of 137Cs obtained from a prototype detector of transparent solid argon crystal. The results show that the scheme proposed in this study can successfully produce a large volume transparent crystalline argon detector, the scintillation light signals can be effectively obtained from the solid argon scintillator, and the corresponding pulse amplitude spectrum is given. This work indicates that it is feasible to develop a solid argon crystal scintillation detector by using our approach.

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16

Li, Yang, Changgui Cheng, Minglei Yang, Zhixuan Dong, and Zhengliang Xue. "Behavior Characteristics of Argon Bubbles on Inner Surface of Upper Tundish Nozzle during Argon Blowing Process." Metals 8, no. 8 (July 30, 2018): 590. http://dx.doi.org/10.3390/met8080590.

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During continuous casting of aluminum-killed steel, clogging of tundish nozzle frequently occurs, which seriously disrupts the normal casting sequences and deteriorates strand quality. Generally, argon blowing technology in the form of a stable and continuous argon film on the inner surface of the upper nozzle is employed to prevent the upper nozzle from clogging in the production. To explore the formation mechanism and influence factors of this argon film, a water model of the upper nozzle with blowing argon with a similarity ratio of 1:1 was built. The results show that the number of bubble chains increases gradually with increasing argon flow rate and casting speed, and the argon gas curtain appears at the bottom half of the upper nozzle. For a given argon flow rate, the velocity of argon gas bubbles increased gradually with increasing casting speed, and decreased gradually with increasing distance from the upper nozzle top. For a given casting speed, the average velocity of argon gas bubbles was largest at a distance from the upper nozzle top of 6 mm with argon flow rate of 150 L/h. The results could provide theoretical and technical basis for the optimization of blowing argon parameters in order to prevent the clogging of upper nozzle and improve strand quality.

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17

Verbeek, Alistair A., and Isaac B. Brenner. "Slurry nebulisation of geological materials into argon, argon-nitrogen and argon-oxygen inductively coupled plasmas." Journal of Analytical Atomic Spectrometry 4, no. 1 (1989): 23. http://dx.doi.org/10.1039/ja9890400023.

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18

Zahari, Nur Ismarrubie, H. Yussof, and M. Sugano. "Fatigue Damage Mechanism of Titanium in Inert Environments." Applied Mechanics and Materials 225 (November 2012): 225–29. http://dx.doi.org/10.4028/www.scientific.net/amm.225.225.

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The fatigue damage of titanium has been studied on thin plate specimens subjected to alternating plane bending in argon gas. Fatigue strength in argon gas at Nf = 108 cycles was obtained to be 102 MPa. Fatigue behavior of titanium in argon gas has been attributed to the degradation of grain boundary cohesion with argon gas atoms/molecules. Fatigue cracks were propagated partly in intergranular mode. It has been plausible that argon gas atoms/molecules could penetrate into the distorted regions close to grain boundary through lattice defects and degrade grain boundary cohesion. Grain boundaries have been preferentially damaged in argon gas. The results in argon gas have been compared with those obtained in vacuum and in air.

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19

Saburi, Tei, Rintarou Asami, Yoko Kawai, Tatsuya Suzuki, and Yasuhiko Fujii. "Zirconium sputtering by argon–hydrogen and argon–oxygen plasma." Surface and Coatings Technology 169-170 (June 2003): 487–90. http://dx.doi.org/10.1016/s0257-8972(03)00076-8.

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20

Hernady, Dedy, and Sodiran Sodiran. "PENGARUH DEBIT PEMAKAIAN GAS ARGON SEBAGAI GAS PELINDUNG TERHADAP POROSITAS DAN KEKERASAN HASIL REMELTING ALUMINIUM BERBASIS LIMBAH ALUMINIUM BEKAS." Simetris: Jurnal Teknik Mesin, Elektro dan Ilmu Komputer 9, no. 1 (April 1, 2018): 443–53. http://dx.doi.org/10.24176/simet.v9i1.1992.

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Gas argon sebagai gas inert banyak digunakan untuk proses degassing treatment pada peleburan aluminium. Fungsinya sebagai gas pelindung untuk meminimalkan porositas yang terjadi ketika aluminium cair menjadi padat. Porositas terjadi karena gelembung udara terjebak dalam aluminium cair sehingga mengakibatkan menurunnya kekuatan aluminium tersebut. Penelitian ini dilaksanakan untuk mengetahui berapa volume gas argon yang digunakan untuk kondisi langsung digunakan saat alumunium dipanaskan atau menunggu beberapa saat setelah aluminium mulai mencair. Karena gas argon harganya mahal maka penggunaan gas argon harus seefesien mungkin untuk menekan biaya produksi dalam proses pengecoran. Metode penelitian yang digunakan pada penelitian ini adalah menguji langsung proses peleburan aluminium tanpa gas pelindung, dan memakai gas pelindung dengan jeda waktu penyemprotan 10 menit, 15 menit dan 20 menit. Proses pengamatan porositas yang terjadi menggunakan uji SEM. Dari hasil penelitian diperoleh hasil untuk meleburkan aluminium dibutuhkan waktu kurang lebih 25 menit dan gas argon bisa digunakan 10 menit setelah aluminium dipanaskan. Penggunaan gas argon harus diatur sedemikian rupa sehingga menutupi permukaan aluminium cair. Debit gas argon yang cukup besar akan mengakibatkan gas argon banyak terbuang. Porositas yang terjadi dengan waktu jeda penggunaan gas argon 10 menit setelah aluminium di panaskan adalah sekitar 12,78%.

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21

Ţunea, Daniel, and Mircea Burcă. "Research on Argon Protection when Using WIG Welding." Advanced Materials Research 1029 (September 2014): 20–24. http://dx.doi.org/10.4028/www.scientific.net/amr.1029.20.

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The paper presents the theoretical bases of gas flow, as drowned jets, the device used for viewing the pure gas cone (argon) using a smoke screen infused on the edge of the argon jet and then the results of researches carried out on four sizes of nozzles often used in TIG welding. On each type of nozzle the argon flow parameter was varied and the height of the cone of pure argon was photographed and measured. The paper ends with the mathematical correlations that allow us to maximize the height of pure cone argon in relation to its flow. Keywords: TIG welding, Pure argon cone

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22

Liu, Yinrui. "A Modified Slicing Method with Multi-Dimensional Unfolding to Measure Hadron-Argon Cross Sections." Instruments 8, no. 1 (February 25, 2024): 15. http://dx.doi.org/10.3390/instruments8010015.

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Liquid argon technology is widely used by many previous and current neutrino experiments, and it is also promising for future large-scale neutrino experiments. When detecting neutrinos using liquid argon, many hadrons are involved, which can also interact with argon nuclei. In order to gain a better understanding of the detection processes, and to simulate neutrino events, knowledge of hadron-argon cross sections is needed. This paper describes a new procedure which improves upon the previous work with multi-dimensional unfolding to measure hadron-argon cross sections in a liquid argon time projection chamber. Through a simplified version of simulation, we demonstrate the validity of this procedure.

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23

BOGARD, Donald D., and Daniel H. GARRISON. "Argon-39-argon-40 “ages” and trapped argon in Martian shergottites, Chassigny, and Allan Hills 84001." Meteoritics & Planetary Science 34, no. 3 (May 1999): 451–73. http://dx.doi.org/10.1111/j.1945-5100.1999.tb01353.x.

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24

Hafner, Christina, Hong Qi, Lourdes Soto-Gonzalez, Katharina Doerr, Roman Ullrich, Eva Verena Tretter, Klaus Markstaller, and Klaus Ulrich Klein. "Argon Preconditioning Protects Airway Epithelial Cells against Hydrogen Peroxide-Induced Oxidative Stress." European Surgical Research 57, no. 3-4 (2016): 252–62. http://dx.doi.org/10.1159/000448682.

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Background: Oxidative stress is the predominant pathogenic mechanism of ischaemia-reperfusion (IR) injury. The noble gas argon has been shown to alleviate oxidative stress-related myocardial and cerebral injury. The risk of lung IR injury is increased in some major surgeries, reducing clinical outcome. However, no study has examined the lung-protective efficacy of argon preconditioning. The present study investigated the protective effects of argon preconditioning on airway epithelial cells exposed to hydrogen peroxide (H2O2) to induce oxidative stress. Methods: A549 airway epithelial cells were treated with a cytotoxic concentration of H2O2 after exposure to standard air or 30 or 50% argon/21% oxygen/5% carbon dioxide/rest nitrogen for 30, 45 or 180 min. Cells were stained with annexin V/propidium iodide, and apoptosis was evaluated by fluorescence-activated cell sorting. Protective signalling pathways activated by argon exposure were identified by Western blot analysis for phosphorylated candidate molecules of the mitogen-activated protein kinase and protein kinase B (Akt) pathways. Results: Preconditioning with 50% argon for 30, 45 and 180 min and 30% argon for 180 min caused significant protection of A549 cells against H2O2-induced apoptosis, with increases in cellular viability of 5-47% (p < 0.0001). A small adverse effect was also observed, which presented as a 12-15% increase in cellular necrosis in argon-treated groups. Argon exposure resulted in early activation of c-Jun N-terminal kinase (JNK) and p38, peaking 10- 30 min after the start of preconditioning, and delayed activation of the extracellular signal-regulated kinase 1/2 (ERK1/2) pathway, peaking after 60-90 min. Conclusions: Argon preconditioning protects airway epithelial cells from H2O2-induced apoptotic cell death. Argon activates the JNK, p38, and ERK1/2 pathways, but not the Akt pathway. The cytoprotective properties of argon suggest possible prophylactic applications in surgery-related IR injury of the lungs.

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25

Lagnika, Camel, Min Zhang, John Nsor-Atindana, and Fatoumata Tounkara. "Extension of mushroom shelf-life by ultrasound treatment combined with high pressure argon." International Agrophysics 28, no. 1 (March 1, 2014): 39–47. http://dx.doi.org/10.2478/intag-2013-0025.

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Abstract Effects of ultrasound, high pressure argon, and treatments comprising their combinations on physicochemical and microbiological characteristics of white mushrooms were studied during 9 days of storage at 4°C. High pressure argon treatments were relatively effective in retaining firmness and were found to maintain the cell integrity. White mushrooms firmness after 9 days of storage was increased from 2.79 N for untreated mushrooms up to 3.01, 3.24, 3.58 N for ultrasound, treatments comprising ultrasound and high pressure argon, high pressure argon, respectively. Similarly, the loss of water, ascorbic acid and total soluble solid in fresh mushroom was also greatly reduced by the high pressure argon treatment. The ultrasound treatment followed by treatments comprising ultrasound and high pressure argon and high pressure argon, respectively exhibited a pronounced effect on retarding browning and in delaying mesophilic and psychrotrophic bacteria, yeasts and moulds growth in white mushroom, compared to the control during 9 days of cold storage. Treatments comprising ultrasound and high pressure argon treatment delayed pseudomonas growth, implying that it could extend shelf life of white mushrooms to 9 days at 4°C.

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26

Fannin, H. B., and C. J. Seliskar. "Energy Transfer and Ionization Processes in a Reduced-Pressure Argon ICP." Applied Spectroscopy 41, no. 7 (September 1987): 1216–19. http://dx.doi.org/10.1366/0003702874447545.

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The spectral characteristics of an argon/helium ICP operated at reduced-pressure are presented. The state population distributions deduced from quantitative intensity measurements for plasma neutral and cationic species suggest that the argon/helium plasma is essentially an argon plasma with respect to energy stratification. Comparisons are made with recently reported results for an atmospheric-pressure argon/helium ICP.

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27

Sabli, Nordin, Zainal Abidin Talib, Mat Yunus Wan Mahmood, Zulkarnain Zainal, Hikmat S. Hilal, and Masatoshi Fujii. "CuZnSnSe Thin Film Electrodes Prepared by Vacuum Evaporation: Enhancement of Surface Morphology and Photoelectrochemical Characteristics by Argon Gas." Materials Science Forum 756 (May 2013): 273–80. http://dx.doi.org/10.4028/www.scientific.net/msf.756.273.

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CuZnSnSe thin films were deposited by thermal vacuum evaporation with and without argon gas stream at room temperature. Effect of argon gas on surface morphology and on photoelectrochemical (PEC) characteristics of the films was studied. The electrodes prepared under argon gas showed better enhanced characteristics, due to slower nucleation and growth due to dilution effect of the inert gas. While both electrodes showed soundly good PEC behaviors in a hexacyanoferrate(III)/hexacyanoferrate(II) redox couple, the electrode with argon gas showed 20 fold enhancement in photoactivity, compared to the one without argon gas. The results manifested thin film electrode performance can be enhanced simply by inclusion of argon inert gas inside the preparation chamber, with no need for other procedures such as annealing.

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28

Quevada, Nikko P. "Relative Effects of Cluster Geometry and Density-of-States on s-Aminotetrazine Cluster Dissociation Dynamics." KIMIKA 23 (March 1, 2010): 43–49. http://dx.doi.org/10.26534/kimika.v23i1.43-49.

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The rates of bond breaking of the van der Waals bond in the aminotetrazine (AT)-methane, aminomethyltetrazine (AMT)-argon, and dimethyltetrazine (DMT)-argon clusters are measured and compared using fluorescence emission spectroscopy. The results suggest that the rate of breaking of the van der Waals bond depends largely on the cluster density of states and is more or less independent of the cluster geometry. Thus, the rates of bond breaking are quite similar for all three van der Waals clusters even though the AT-methane cluster has a different effective geometry compared to those of the AMT-argon and DMT-argon clusters. The relative rates of AMT-argon and DMT-argon clusters, which have similar geometries, are consistent with the differences in their cluster density of states.

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29

Anonymous. "Zeiss Argon Laser." Journal of Refractive Surgery 5, no. 1 (January 1989): 67. http://dx.doi.org/10.3928/1081-597x-19890101-25.

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30

Sorensen, S. L., T. Åberg, J. Tulkki, E. Rachlew-Källne, G. Sundström, and M. Kirm. "Argon 3sautoionization resonances." Physical Review A 50, no. 2 (August 1, 1994): 1218–30. http://dx.doi.org/10.1103/physreva.50.1218.

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31

Bergeå, Bent. "Argon laser trabeculoplasty." Acta Ophthalmologica Scandinavica 73, no. 2 (May 27, 2009): 183. http://dx.doi.org/10.1111/j.1600-0420.1995.tb00666.x.

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32

Félix, C., C. Sieber, W. Harbich, J. Buttet, I. Rabin, W. Schulze, and G. Ertl. "Ag8Fluorescence in Argon." Physical Review Letters 86, no. 14 (April 2, 2001): 2992–95. http://dx.doi.org/10.1103/physrevlett.86.2992.

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33

Renne, Paul R., Kenneth A. Farley, Tim A. Becker, and Warren D. Sharp. "Terrestrial cosmogenic argon." Earth and Planetary Science Letters 188, no. 3-4 (June 2001): 435–40. http://dx.doi.org/10.1016/s0012-821x(01)00336-3.

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34

Burns, G. B., P. F. B. Williams, R. P. Lowe, W. J. R. French, P. A. Greet, and D. P. Monselesan. "Argon auroral emissions." Journal of Atmospheric and Solar-Terrestrial Physics 64, no. 18 (December 2002): 2013–17. http://dx.doi.org/10.1016/s1364-6826(02)00077-9.

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35

Hodgson, Richard S., and David F. Wilson. "Argon Laser Stapedotomy." Laryngoscope 101, no. 3 (March 1991): 230???233. http://dx.doi.org/10.1288/00005537-199103000-00002.

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36

Matthews, Kay. "Argon Beam Coagulation." AORN Journal 56, no. 5 (November 1992): 885–902. http://dx.doi.org/10.1016/s0001-2092(07)68755-9.

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37

Haruna, K., and M. Uno. "Purification of argon." Zeolites 15, no. 8 (November 1995): 757. http://dx.doi.org/10.1016/0144-2449(95)96869-3.

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38

Plinkert, P. K. "Argon-Plasma-Chirurgie." HNO 46, no. 7 (July 15, 1998): 637–40. http://dx.doi.org/10.1007/s001060050287.

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39

Waye, Jerome D. "Argon Plasma Coagulator." Problems in General Surgery 19, no. 2 (June 2002): 37–43. http://dx.doi.org/10.1097/00013452-200206000-00007.

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40

Barnes, Norman P., and Dennis K. Remelius. "Argon arc lamps." Applied Optics 24, no. 13 (July 1, 1985): 1947. http://dx.doi.org/10.1364/ao.24.001947.

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41

Sorensen, S. L., T. Åberg, J. Tulkki, E. Rachlew-Källne, G. Sundström, and M. Kirm. "Argon 3s autoionization." Le Journal de Physique IV 04, no. C9 (November 1994): C9–401—C9–404. http://dx.doi.org/10.1051/jp4:1994967.

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42

Harrad, R. A., K. P. Stannard, and J. S. Shilling. "Argon laser iridotomy." British Journal of Ophthalmology 69, no. 5 (May 1, 1985): 368–72. http://dx.doi.org/10.1136/bjo.69.5.368.

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43

Zafar, N., G. Laricchia, M. Charlton, and A. Garner. "Positronium-Argon Scattering." Physical Review Letters 76, no. 10 (March 4, 1996): 1595–98. http://dx.doi.org/10.1103/physrevlett.76.1595.

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44

Malenkov, G. G. "Argon and water." Journal of Structural Chemistry 54, S2 (December 2013): 252–61. http://dx.doi.org/10.1134/s0022476613080064.

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45

Zhang Junyuan, 张浚源, 王鹏 Wang Peng, 孙伟中 Sun Weizhong, 吕晓丹 Lü Xiaodan, 贺平逆 He Pingni, and 苟富均 Gou Fujun. "Effects of argon flow velocity on argon cascaded arc plasma." High Power Laser and Particle Beams 23, no. 12 (2011): 3338–44. http://dx.doi.org/10.3788/hplpb20112312.3338.

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46

Cohen, Arik, Jan Lundell, and R. Benny Gerber. "First compounds with argon–carbon and argon–silicon chemical bonds." Journal of Chemical Physics 119, no. 13 (October 2003): 6415–17. http://dx.doi.org/10.1063/1.1613631.

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47

Wetzer, J. M. "Measurement of Argon-Density Nonuniformities in Argon-Cesium MHD Plasmas." IEEE Transactions on Plasma Science 13, no. 3 (1985): 144–48. http://dx.doi.org/10.1109/tps.1985.4316383.

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48

KUNZ, JOACHIM, MARTINA FALTER, and ELMAR K. JESSBERGER. "Shocked meteorites: Argon-40-argon-39 evidence for multiple impacts." Meteoritics & Planetary Science 32, no. 5 (September 1997): 647–70. http://dx.doi.org/10.1111/j.1945-5100.1997.tb01550.x.

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Capetti, A., and E. Pfender. "Probe measurements in argon plasma jets operated in ambient argon." Plasma Chemistry and Plasma Processing 9, no. 2 (June 1989): 329–41. http://dx.doi.org/10.1007/bf01054288.

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Wang, Jun, Chenxu Cai, Puze Geng, Feng Tan, Qing Yang, Ren Wang, and Wenbiao Shen. "A New Discovery of Argon Functioning in Plants: Regulation of Salinity Tolerance." Antioxidants 11, no. 6 (June 14, 2022): 1168. http://dx.doi.org/10.3390/antiox11061168.

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Abstract:

Argon, a non-polar molecule, easily diffuses into deeper tissue and interacts with larger proteins, protein cavities, or even receptors. Some of the biological effects of argon, notably its activity as an antioxidant, have been revealed in animals. However, whether and how argon influences plant physiology remains elusive. Here, we provide the first report that argon can enable plants to cope with salinity toxicity. Considering the convenience of the application, argon gas was dissolved into water (argon-rich water (ARW)) to investigate the argon’s functioning in phenotypes of alfalfa seed germination and seedling growth upon salinity stress. The biochemical evidence showed that NaCl-decreased α/β-amylase activities were abolished by the application of ARW. The qPCR experiments confirmed that ARW increased NHX1 (Na+/H+ antiporter) transcript and decreased SKOR (responsible for root-to-shoot translocation of K+) mRNA abundance, the latter of which could be used to explain the lower net K+ efflux and higher K accumulation. Subsequent results using non-invasive micro-test technology showed that the argon-intensified net Na+ efflux and its reduced Na accumulation resulted in a lower Na+/K+ ratio. NaCl-triggered redox imbalance and oxidative stress were impaired by ARW, as confirmed by histochemical and confocal analyses, and increased antioxidant defense was also detected. Combined with the pot experiments in a greenhouse, the above results clearly demonstrated that argon can enable plants to cope with salinity toxicity via reestablishing ion and redox homeostasis. To our knowledge, this is the first report to address the function of argon in plant physiology, and together these findings might open a new window for the study of argon biology in plant kingdoms.

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