Дисертації з теми "Low-energy neutrino"
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Allport, P. P. "High energy neutrino scattering at low Q'2." Thesis, University of Oxford, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376865.
Повний текст джерелаRe, Fiorentin Michele. "Understanding and predicting low-energy neutrino parameters with leptogenesis." Thesis, University of Southampton, 2016. https://eprints.soton.ac.uk/400882/.
Повний текст джерелаLi, Tracey Chuiyee. "Phenomenology of a low-energy neutrino factory and related experiments." Thesis, Durham University, 2010. http://etheses.dur.ac.uk/613/.
Повний текст джерелаMarzola, Luca. "On leptogenesis, flavour effects and the low energy neutrino parameters." Thesis, University of Southampton, 2012. https://eprints.soton.ac.uk/346819/.
Повний текст джерелаPICCIAU, EMMANUELE. "Low-energy signatures in DarkSide-50 experiment and neutrino scattering processes." Doctoral thesis, Università degli Studi di Cagliari, 2022. http://hdl.handle.net/11584/327520.
Повний текст джерелаO'Keeffe, Helen Mary. "Low energy background in the NCD phase of the Sudbury Neutrino Observatory." Thesis, University of Oxford, 2008. http://ora.ox.ac.uk/objects/uuid:b53c04b1-5dba-4cfb-98ec-c0d8b87fb58b.
Повний текст джерелаManecki, Szymon M. "Annual Modulation Measurement of the Low Energy Solar Neutrino Flux with the Borexino Detector." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/23250.
Повний текст джерелаflux modulation due to Earth\'s elliptical orbit with the Borexino detector. Borexino is a real-time calorimetric detector for low energy neutrino spectroscopy located in the underground laboratory of Gran Sasso, Italy. The experiment\'s main focus is the direct measurement of the 7Be solar neutrino flux of all flavors via neutrino-electron scattering in an ultra-pure scintillation liquid. The original goal of this work was to quantify sensitivity of the Borexino detector to a 7% peak-to-peak signal variation over the course of a year and study background stability. A Monte-Carlo simulated sample of the expected variation was prepared in two phases of data acquisition, Phase I that spans from May-2007 to May-2010 and Phase II from October-2011 to September-2012. The data was then fitted in the time domain with a sinusoidal function and analyzed with the Lomb-Scargle fast Fourier transformation in the search for significant periodicities between periods of 0.5 and 1.5 years. The search was performed in the energy window dominated by 7Be, [210; 760] keV, and 60-day bins in the case of the fit and 10-bins for the Lomb-Scargle scan. This work also contains study of the post-purification data of Phase II beyond September-2012 with a prediction for the future sensitivity and justification of the achieved background levels.
Ph. D.
Bilmis, Selcuk. "Study On Non Standard Interaction Of Neutrino And Unparticle Physics With Neutrino-electron Scattering Data At Low Energy In Texono Experiment." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612495/index.pdf.
Повний текст джерелаe &minus
e&minus
data taken at the Kuo-Sheng Reactor Neutrino Laboratory were used to probe two sceneria: Non-Standard Neutrino Interactions (NSI) and Unparticle Physics. New constraints were placed to the NSI parameters (&epsilon
eL , &epsilon
eR ), (&epsilon
eL , &epsilon
eR ) and (&epsilon
eL , &epsilon
eR ) , as well as to the coupling constants for scalar (&lambda
0 ) and vector (&lambda
1 ) unparticles to the neutrinos and electrons.
Xu, Yu [Verfasser], Livia [Akademischer Betreuer] Ludhová, and Achim [Akademischer Betreuer] Stahl. "Machine learning application in low energy liquid scintillator neutrino experiment / Yu Xu ; Livia Ludhová, Achim Stahl." Aachen : Universitätsbibliothek der RWTH Aachen, 2020. http://d-nb.info/1226218601/34.
Повний текст джерелаMarta, Michele. "The 14N(p,γ)15O reaction studied at low and high beam energy". Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-87464.
Повний текст джерелаRountree, Steven Derek. "Science and Technology of a Low-Energy Solar Neutrino Spectrometer (LENS) and Development of the MiniLENS Underground Prototype." Diss., Virginia Tech, 2010. http://hdl.handle.net/10919/27803.
Повний текст джерелаPh. D.
Funcke, Lena [Verfasser], and Georgi [Akademischer Betreuer] Dvali. "How gravity shapes the low-energy frontier of particle physics : neutrino masses and the domestic axion / Lena Funcke ; Betreuer: Georgi Dvali." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2018. http://d-nb.info/1196008752/34.
Повний текст джерелаDaub, Brian (Brian Hollenberg). "Low energy neutron-proton interactions." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/76978.
Повний текст джерелаCataloged from PDF version of thesis.
Includes bibliographical references (p. 265-270).
There have been few measurements of cross sections for neutron-proton scattering and radiative capture below 1 MeV. Those measurements which do exist are at a small number of energies and are often inconsistent with theoretical models and with each other. We have conducted several experiments with the goal of obtaining improved data on these cross sections at the University of Kentucky (UKY) and the Los Alamos Neutron Science Center (LANSCE). Feasibility studies for measuring the low energy cross section for np radiative capture have been conducted at both UKY and LANSCE, culminating in a measurement of the cross section at 0.5, 0.9, 1.5, 2.0, and 2.5 MeV at UKY, using a plastic scintillator to detect recoiling deuterons and two BGO scintillators to detect the [gamma]-ray yields at 64.6° and 106.6°. We also performed measurements of the response of BC418 plastic scintillator to low energy protons during these studies, and conducted several additional measurements of the scintillator response at LANSCE and UKY, yielding very precise results from 100 keV to 3.6 MeV. The total cross section for np scattering was measured at UKY from 150 to 800 keV by neutron transmission, measuring the neutron yields in a liquid scintillator with various targets in the beam. The cross section was determined by taking ratios of neutron yields with and without the target, giving cross sections which are independent of detector efficiency and dead time. These results fill a significant gap in the available data below 500 keV.
by Brian Daub.
Ph.D.
Weiland, Cedric. "Effects of fermionic singlet neutrinos on high- and low-energy observables." Phd thesis, Université Paris Sud - Paris XI, 2013. http://tel.archives-ouvertes.fr/tel-00922999.
Повний текст джерелаPadilla, Eduardo A. "Characterization of fissile material using low energy neutron interrogation." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/41299.
Повний текст джерелаIncludes bibliographical references (p. 76).
The glaring need to develop methods for detecting and interdicting illicit nuclear trafficking has resulted in the exploration of various methods for active neutron interrogation, specifically for the presence of special nuclear material (SNM) in cargo containers. The proposed system aims to defeat the ability of terrorists to import SNM into the United States via maritime shipping, thus greatly reducing the possibility of a successful nuclear terrorist attack. The proposed system uses 60-100 keV neutrons, produced by the 7Li(p,n)7Be reaction in a linear accelerator and kinematically beamed into various targets. In the event that fissile material is present, highly energetic neutrons will be emitted from the fissioning of a nucleus and some of these neutrons will eventually radiate from the container. Inevitably, high energy photons will also radiate from the target due to the interactions of neutrons and host materials. Utilizing a neutron detection system that is able to discriminate low energy neutrons, high energy gamma rays and the high energy neutrons from fission enables the detection of fissile material in various containers. An increase in discriminated high energy neutron events during active neutron interrogation selectively indicates the presence of SNM, since neutron energies on the order of 1 MeV are required for the SNM-equivalent fissioning potential when incident upon U238 and other high-Z nuclei. Furthermore, neutrons with less than approximately 100 keV do not undergo nuclear processes such as (n,2n) and (n,n'), but rather lose their energy through kinematic collisions.
(cont.)Results obtained validate this proof-of-concept, in that observed high energy neutron events increase significantly in the presence of gram-quantities of SNM. Further, attempts made to shield the SNM from active interrogation do not defeat the proposed system's ability to identify the presence of SNM. With a fully-functional proof-of-concept, further work towards developing a complete and deployable prototype active neutron interrogation system will serve to augment the ability of the United States to detect, deter and interdict illicit nuclear trafficking.
by Eduardo A. Padilla.
S.M.
Pidopryhora, Yurii. "Testing the low energy theorem for spinless "proton-neutron" bremsstrahlung." Ohio : Ohio University, 2003. http://www.ohiolink.edu/etd/view.cgi?ohiou1060029614.
Повний текст джерелаHabeck, Christian. "Experimental determination of the weak coupling constant ratio Gâ†A/Gâ†V in neutron decay." Thesis, University of Sussex, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364138.
Повний текст джерелаSchwarzenberg, Johannes von. "Very converted low-energy transitions in nuclei in the A = 180 - 190 region." Diss., Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/30894.
Повний текст джерелаJohnson, Erik D. Ph D. Massachusetts Institute of Technology. "Monte Carlo model of a low-energy neutron interrogation system for detecting fissile material." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/41262.
Повний текст джерелаThesis (S.M. and S.B.)--Massachusetts Institute of Technology, Dept. of Nuclear Science and Engineering, 2006.
(cont.) Further MCNP simulations of the neutron source impinging on cargo containers suggest that this technique can respond, as expected, qualitatively differently to containers containing SNM from containers that do not. Containers that contain small amounts of fissile isotopes as in the case of a few grams of uranium-235 in a kilogram of depleted uranium will also respond to this method but much more weakly. The system as proposed is viable and further simulation and experimental work will elucidate the behavior of this system under a wide range of cargo environments.
The undeniable threat of nuclear terrorism presents an opportunity for innovation in developing active interrogation technology. The proposed system aims to detect the smuggling of special nuclear material (SNM) in maritime containers. Identifying the importation of SNM will be instrumental in protecting the American public from a nuclear terrorist attack made possible by the construction of a weapon with fissile material from abroad. The proposed system uses a directionally-biased beam of low-energy neutrons (60 - 100 keV) generated from a 7Li(p,n)7Be reaction run near threshold. These neutrons are directed towards a cargo container of unknown composition. If SNM is present in the container and the neutrons can reach it, high-energy fission neutrons will be detectable outside the cargo container. MCNP models indicate that even low-energy neutrons will be able to penetrate through reasonable amounts of material likely to be encountered in cargo environments. The only major exception is hydrogenous material, which could alter the radiation signature. The presence of shielding material may further alter these results. Small amounts of shielding that is hydrogenous will thermalize incident neutrons and raise the likelihood of generating fissions. An abundance of shielding material could mask the presence of fissile material but will also result in changes in the induced gamma energy spectrum and greatly increase the flux of thermal neutrons even outside the cargo container. Still, this material would not be resistant to other radiological techniques and the presence of an abundance of hydrogen will be evident and potentially raise suspicion in and of itself.
by Erik D. Johnson.
S.M.and S.B.
Nakatsuka, Noritsugu. "Isoscalar and Isovector strengths of low-energy dipole excitations in neutron-rich unstable 20O." Kyoto University, 2018. http://hdl.handle.net/2433/232241.
Повний текст джерелаD'Angelo, Davide. "Towards the detection of low energy solar neutrinos in BOREXino data readout, data reconstruction and background identification /." [S.l.] : [s.n.], 2006. http://deposit.ddb.de/cgi-bin/dokserv?idn=980146100.
Повний текст джерелаWang, Chang-Kwang Chris. "A pilot study of an epithermal neutron source based on a low-energy proton accelerator for boron neutron capture therapy /." The Ohio State University, 1989. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487672631600438.
Повний текст джерелаMotta, Dario Giuseppe. "Feasibility analysis and prototype measurements of a novel approach for the real-time spectroscopy of low energy solar neutrinos." [S.l. : s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=971175403.
Повний текст джерелаLavelle, Christopher M. "The neutronic design and performance of the Indiana University Cyclotron Facility (IUCF) Low Energy Neutron Source (LENS)." [Bloomington, Ind.] : Indiana University, 2007. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3255512.
Повний текст джерелаTitle from PDF t.p. (viewed Nov. 20, 2008). Source: Dissertation Abstracts International, Volume: 68-03, Section: B, page: 1688. Adviser: David V. Baxter.
Remmes, Nicholas B. "Design of the Small Angle Neutron Scattering instrument at the Indiana University Low Energy Neutron Source : applications to the study of nanostructured materials /." [Bloomington, Ind.] : Indiana University, 2007. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3297113.
Повний текст джерелаTitle from dissertation home page (viewed Sept. 30, 2008). Source: Dissertation Abstracts International, Volume: 69-02, Section: B, page: 1064. Adviser: David V. Baxter.
Anderson, Charlotte Rain. "The effects of introducing static and dynamic disorder on the low-energy excitations of superfluid â´He." Thesis, University of Liverpool, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367070.
Повний текст джерелаRichard, Andrea L. "Measurement of the Breakup Cross Section of the D(d,n) Reaction at 6.94 MeV for the Active Interrogation of Hidden Fissile Materials." Ohio University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1397479139.
Повний текст джерелаJoutras, David William. "An experimental search for low energy astrophysical neutrino sources." 1987. http://catalog.hathitrust.org/api/volumes/oclc/15992900.html.
Повний текст джерелаTypescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 144-151).
Kos, Mark Szymon. "Low energy solar neutrino analysis of the salt phase of the Sudbury neutrino observatory." Thesis, 2007. http://hdl.handle.net/1974/959.
Повний текст джерелаThesis (Ph.D, Physics, Engineering Physics and Astronomy) -- Queen's University, 2007-12-19 13:58:16.601
Seibert, Stanley Reid. "A low energy measurement of the ⁸B solar neutrino spectrum at the Sudbury Neutrino Observatory." 2008. http://hdl.handle.net/2152/17755.
Повний текст джерелаtext
"Astrophysical neutrinos at the low and high energy frontiers." Doctoral diss., 2013. http://hdl.handle.net/2286/R.I.20985.
Повний текст джерелаDissertation/Thesis
Ph.D. Physics 2013
Maneschg, Werner [Verfasser]. "Low-energy solar neutrino spectroscopy with Borexino : towards the detection of the solar pep and CNO neutrino flux / put forward by Werner Maneschg." 2011. http://d-nb.info/1012586359/34.
Повний текст джерелаMarta, Michele. "The 14N(p,γ)15O reaction studied at low and high beam energy". Doctoral thesis, 2011. https://tud.qucosa.de/id/qucosa%3A25998.
Повний текст джерелаKaleko, David. "MicroBooNE: The Search For The MiniBooNE Low Energy Excess." Thesis, 2017. https://doi.org/10.7916/D87D3260.
Повний текст джерелаSeddighin, MARYAM. "Low Energy 8B Solar Neutrinos in SNO+: Controlling and Constraining Radon Backgrounds." Thesis, 2013. http://hdl.handle.net/1974/8016.
Повний текст джерелаThesis (Master, Physics, Engineering Physics and Astronomy) -- Queen's University, 2013-05-01 20:26:56.981
Harrison, David. "Low-Energy Proton Accelerator for Detector Testing." 2013. http://hdl.handle.net/1993/22092.
Повний текст джерелаHochmuth, Kathrin Angela [Verfasser]. "Low energy neutrinos as geological and astrophysical messengers / Kathrin Angela Hochmuth." 2008. http://d-nb.info/989053342/34.
Повний текст джерелаCASENTINI, CLAUDIO. "Multimessenger search for astrophysical bursts with Gravitational Waves and Low Energy Neutrinos." Doctoral thesis, 2018. http://hdl.handle.net/11573/1063714.
Повний текст джерелаHu, Xiaomin. "Multinuclei coherent effects on the widths and energy shifts on low energy neutron resonance." Thesis, 1993. http://hdl.handle.net/1911/13741.
Повний текст джерелаD'Angelo, Davide [Verfasser]. "Towards the detection of low energy solar neutrinos in BOREXino : data readout, data reconstruction and background identification / Davide D'Angelo." 2006. http://d-nb.info/980146100/34.
Повний текст джерела"The neutronic design and performance of the Indiana University Cyclotron Facility (IUCF) Low Energy Neutron Source (LENS)." INDIANA UNIVERSITY, 2007. http://pqdtopen.proquest.com/#viewpdf?dispub=3255512.
Повний текст джерела"Design of the Small Angle Neutron Scattering instrument at the Indiana University Low Energy Neutron Source: Applications to the study of nanostructured materials." INDIANA UNIVERSITY, 2008. http://pqdtopen.proquest.com/#viewpdf?dispub=3297113.
Повний текст джерелаNiedermaier, Oliver Thomas [Verfasser]. "Low-energy Coulomb excitation of the neutron-rich Mg isotopes 30Mg and 32Mg / presented by Oliver Thomas Niedermaier." 2005. http://d-nb.info/975806416/34.
Повний текст джерелаStiegler, Tyana Michele. "Measurement of the Low Energy Nuclear Response in NaI(Tl) Crystals for Use in Dark Matter Direct Detection Experiments." Thesis, 2013. http://hdl.handle.net/1969.1/151303.
Повний текст джерелаMotta, Dario Giuseppe [Verfasser]. "Feasibility analysis and prototype measurements of a novel approach for the real-time spectroscopy of low energy solar neutrinos / presented by Dario Giuseppe Motta." 2004. http://d-nb.info/971175403/34.
Повний текст джерелаLaurin, Mathieu. "Recherche de la matière sombre à l’aide de détecteurs à liquides surchauffés dans le cadre de l’expérience PICO/Picasso." Thèse, 2016. http://hdl.handle.net/1866/18480.
Повний текст джерелаDark matter makes up 85% of the matter content of the universe and we still don’t know what it is made of. The Picasso experiment, now named PICO, has been searching for it for several years with the use of superheated liquid detectors. Following the interaction of a particle with a superheated liquid freon of the CXFY family, a bubble is formed through a phase change and is detected with several types of sensors, telling us about the nature of the event. Located at SNOLab, in Ontario, these detectors produce some of the best results in the field. The present work will go through three types of superheated liquid detectors. A full description of the working principles will be presented for each of them. In addition, the fabrication, the operation mode and the data analysis will be shown. Detector calibration techniques will then be presented with different particle sources. Finally, the most recent results will be discussed, demonstrating the performance of the superheated liquid detector technique.
Piro, Marie-Cécile. "Nouvelles limites sur la détection directe de la matière sombre avec l’expérience PICASSO." Thèse, 2012. http://hdl.handle.net/1866/9138.
Повний текст джерелаAstronomical and cosmological observations strongly suggest the presence of an exotic form of non-relativistic, non-baryonic matter that would represent 26% of the actual energy-matter content of the Universe. This so-called cold dark matter would be composed of Weakly Interactive Massive Particles (WIMP). PICASSO (Project In CAnada to Search for Supersymmetric Objects) aims to detect directly one of the dark matter candidates proposed in the framework of supersymmetric extensions of the standard model : the neutralino. The experiment is installed in the SNOLAB underground laboratory at Sudbury (Ontario) and uses superheated C4F10 droplets detectors, a variant of bubble chamber technique. Phase transitions in the superheated liquids are triggered by 19 F recoils caused by the elastic collision with neutralinos and create an acoustic signal which is recorded by piezoelectric sensors. This thesis presents recent progress in PICASSO leading to a substantially increased sensitivity in the search of neutralinos. New fabrication and purification procedures allowed a background reduction of about a factor 10 of the major detectors contamination caused by alpha emitters. Detailed studies allowed to localize these emitters in the detectors. In addition, data analysis efforts were able to improve substantially the discrimination between alpha particle induced events and those created by nuclear recoils. New analysis tools were also developed in order to discriminate between particle induced and non-particle induced events, such as electronic backgrounds and acoustic noise signals. An important new background suppression mechanism at higher temperatures led to the present improved sensitivity of PICASSO at low WIMP masses.
Lee, Nan Young. "Polarized Compton Scattering off the Nucleon." Doctoral thesis, 2001. http://hdl.handle.net/11858/00-1735-0000-0006-B42F-F.
Повний текст джерела