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Rozprawy doktorskie na temat „Deep inelastic collisions”

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Data publikacji: 4 czerwca 2021

Data aktualizacji: 29 lipca 2024

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1

Gilmore, Jason R. "Search for contact interactions in deep inelastic scattering". Connect to this title online, 2002. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu983824358.

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Thesis (Ph. D.)--Ohio State University, 2002.
Title from first page of PDF file. Document formatted into pages; contains xx, 143 p.; also contains graphics. Includes abstract and vita. Advisor: L. Stanley Durkin, Dept. of Physics. Includes bibliographical references (p. 137-143).

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2

Signal, Anthony Ian. "Deep inelastic scattering and bag model". Title page, abstract and contents only, 1988. http://web4.library.adelaide.edu.au/theses/09PH/09phs578.pdf.

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3

Valiente-Dobon, Jose Javier. "Studies of neutron-rich nuclei using deep inelastic collisions". Thesis, University of Surrey, 2003. http://epubs.surrey.ac.uk/843390/.

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A deep inelastic reaction between a thin self-supporting 19878Pt target and an 850MeV 13654Xe beam has been used to populate and study both neutron-rich nuclei around the beam and target masses and the reaction mechanism. An Ipi= 10+ isomeric state has been found in the N = 80 isotone 13656Ba with a measured half-life of 91 +/- 2ns. The structure of the predominantly (h11/2)-210+ isomer is discussed in terms of shell model and pair-truncated shell model calculations and compared to the even-Z, N = 80 isotones ranging from 13050Sn to 14868Er. A qualitative explanation of the observed dramatic decrease in the B(E2 : 10+ → 8+) value for the N = 80 isotones at 136Ba is given in terms of the increasing single-particle energy of the h11/2 neutron configuration as the proton sub-shell is filled. A 4-quasiparticle isomer has been observed in with a half-life of 188 +/- 38ns. The results are compared with blocked BCS Nilsson calculations which favour the Kpi= 15- interpretation. This isomer completes the even-A tungsten, 4-quasiparticle isomer systematics from A = 176 to 186. A high spin isomeric state has been found in the near spherical nucleus 19874W with a half-life of 36 +/- 2ns. The nature of this isomer has been interpreted from an examination of the systematics of platinum isotopes and neighbouring nuclei as a tentative Ipi= 12+ state from rotation-aligned, two neutron (i13/2)2configuration. Using prompt-delayed gamma-ray correlations, the complementary fragments of the reaction have been studied and used to identify new states in 19476Os. The angular momentum transfer to the binary fragments in the reaction has been investigated in terms of the average total gamma-ray fold versus the scattering angle of the recoils.

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4

Wilson, Emma. "Gamma spectroscopy of 207Tl126 populated in deep-inelastic collisions". Thesis, University of Surrey, 2015. http://epubs.surrey.ac.uk/807041/.

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5

Dunne, Gerald V. "Deep inelastic scattering and the EMC effect /". Title page, contents and introduction only, 1986. http://web4.library.adelaide.edu.au/theses/09SM/09smd923.pdf.

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6

Schilling, Frank-Peter. "Diffractive jet production in deep inelastic e+p collisions at HERA". [S.l. : s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=961853298.

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7

Kant, David. "A study of the fragmentation of quarks in e-p collisions at HERA". Thesis, Queen Mary, University of London, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338959.

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8

Campbell-Robson, Stephen. "A study of charm production in deep inelastic scattering in e'+p collisions". Thesis, University of Bristol, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388016.

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9

Bass, Steven David. "Spin dependent effects in quantum chromodynamics /". Title page, contents and abstract only, 1992. http://web4.library.adelaide.edu.au/theses/09PH/09phb317.pdf.

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Thesis (Ph. D.)--University of Adelaide, Dept. of Physics and Mathematical Physics, 1993.
Copies of three of the author's previously published articles inserted as appendix B. Includes bibliographical references.

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10

Keksis, August Lawrence. "N/z equilibration in deep inelastic collisions and the fragmentation of the resulting quasiprojectiles". Texas A&M University, 2003. http://hdl.handle.net/1969.1/5886.

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When target and projectile nuclei have a difference in neutron to proton ratio (N/Z), the quasiprojectiles formed in a deep inelastic collision (DIC) should have a mean N/Z between the N/Z of the target and the N/Z of the projectile, depending on the amount of N/Z equilibration that occurred. Data from six reaction systems at two beam energies (32 and 45 MeV/nucleon) were collected. The systems in order of increasing difference between target and projectile N/Z (shown in parentheses) are 40Ar + 112Sn (Ã¢ÂÂN/Z = 0.018), 48Ca + 124Sn (Ã¢ÂÂN/Z = 0.080), 48Ca + 112Sn (Ã¢ÂÂN/Z = 0.160), 40Ca + 112Sn (Ã¢ÂÂN/Z = 0.240), 40Ar + 124Sn (Ã¢ÂÂN/Z = 0.258) and 40Ca + 124Sn (Ã¢ÂÂN/Z = 0.480). The quasiprojectile N/Z was determined by two techniques. The first technique used the isotopically resolved fragments to reconstruct the quasiprojectile N/Z. The second technique, developed in this thesis, used fragment yield ratios and a simple equation to simultaneously fit all six systems to determine the quasiprojectile N/Z. Simulations and a filter of the FAUST (Forward Array Using Silicon Technology) acceptance were used to calculate neutron loss; this accounted for the difference between the two techniques. To study the fragmentation of quasiprojectiles the fragment yields were used to calculate the isobaric, isotopic, fractional and mean N/Z yields. The results showed that as neutron richness increased, more neutron-rich fragments were produced. In addition observation showed evidence for an inhomogeneous distribution of N/Z between the light charged particles (LCPs Z less than 3) and intermediate mass fragments (IMFs Z greater than 2). The theoretical results, which used different values of the symmetry energy, were compared to experimental data to determine which symmetry energy best represents the experimental data. The comparison showed the experimental data was the overall best fit with a lower value of the symmetry energy. These results were not conclusive and further investigation is required.

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11

Oliver, Katie Rosemarie. "Measurement of high Q² charged-current deep inelastic scattering with polarised positron beams using the ZEUS detector at HERA". Thesis, University of Oxford, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.589602.

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This thesis presents measurements of charged current deep inelastic scattering cross sections in e+p collisions with longitudinally polarised positron beams. The measurements are based on data taken by the ZEUS detector at the HERA collider during the 2006-2007 run- ning period. The data sample has an integrated luminosity of 132 pb-1 and was taken at a centre-of-mass energy of 318 GeY. The total cross section has been measured at positive and negative values of the longitu- dinal polarisation of the positron beam (Pe). In addition, the single differential cross sections dδ / dQ2, dδ / dx and dδ / dy have been measured for Q2 > 200 Ge y2, also using both positively and negatively polarised positron beams. The reduced cross section has been measured in nine bins of Q2 in the kinematic range 280 < Q2 < 30000 Gey2 and 0.0078 < x < 0.42. The results are compared against the descriptions provided by the CTEQ6.6, MSTW 2008, HEARPDF1.0 and ZEUS-JETS PDFs. In general, the measured cross sections are well described by these predictions. Based on the measurement of the total cross section as a function of the polarisation of the positron beam, a lower limit on the mass of a hypothetical right-handed W boson has been extracted from the upper limit of the cross-section at Pe = -1. This limit is complementary to the limits obtained from direct searches (for example at CDF and D0) because the limit presented herein is for a space-like vV, whereas for direct searches, the limit on the mass of a time-like W boson is obtained. The results of this analysis have been published and have been included ill the determination of the HERAPDF theoretical prediction and also in HI and ZEUS combined results.

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12

Kluge, Thomas. "Measurement and QCD analysis of event shape variables in deep inelastic electron proton collisions at HERA". Hamburg : DESY, 2004. http://deposit.d-nb.de/cgi-bin/dokserv?idn=971990387.

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13

Jin, Zhong. "The perturbative and non-perturbative QCD effects in the azimuthal distribution of hadron jets observed in muon deep inelastic scattering /". Thesis, Connect to this title online; UW restricted, 1997. http://hdl.handle.net/1773/9724.

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14

Patel, Sunil. "A study of heavy quark production and semi-leptonic decay in deep-inelastic ep scattering at high energies". Thesis, University of Oxford, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.670155.

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15

Smith, Jason. "Quarks and antiquarks in nuclei /". Thesis, Connect to this title online; UW restricted, 2005. http://hdl.handle.net/1773/9750.

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16

Kluge, Thomas [Verfasser]. "Measurement and QCD analysis of event shape variables in deep inelastic electron proton collisions at HERA / Deutsches Elektronen-Synchrotron in der Helmholtz-Gemeinschaft, DESY. Vorgelegt von Thomas Kluge". Hamburg : DESY, 2004. http://d-nb.info/971990387/34.

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17

Ferraton, Mathieu. "Collisions profondément inélastiques entre ions lourds auprès du Tandem d’Orsay & Spectroscopie gamma des noyaux exotiques riches en neutrons de la couche fp avec le multi-détecteur germanium ORGAM". Thesis, Paris 11, 2011. http://www.theses.fr/2011PA112119/document.

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Les travaux effectués au cours de cette thèse au sein du groupe de structure nucléaire de l’IPN d’Orsay s’articulent autour de la production, en vue d’une étude par spectroscopie gamma, de noyaux exotiques riches en neutron de la couche fp. Dans ce cadre, nous avons mis en place, auprès de l’accélérateur Tandem d’Orsay, un multi-détecteur au germanium baptisé ORGAM, destiné à la spectroscopie gamma à haute résolution. Au cours de l’année 2008-2009, les détecteurs amenés à composer ORGAM ont été testés individuellement, ainsi que le dispositif annexe de réjection Compton, en coopération avec la division instrumentation du laboratoire. Parallèlement, le système d’alimentation automatique en azote liquide, destiné au maintien des détecteurs à basse température, a été amélioré et fiabilisé. L’ensemble du dispositif a été mis en place sur une ligne de faisceau de l’accélérateur tandem avec le concours du personnel technique de l’accélérateur.La première expérience utilisant le dispositif ORGAM a été réalisée en juillet 2009. Cette expérience, dont les données ont été analysées dans le cadre de ce travail, visait à étudier les collisions profondément inélastiques entre un faisceau de 36S accéléré à 154 MeV, et une cible de 70Zn. Un dispositif permettant la détection des particules chargées émises à grand angle a été utilisé afin d’identifier les fragments de ces collisions. Il n’a pas été possible, du fait du fond important induit par la diffusion élastique du faisceau dans la cible, d’identifier directement ces fragments. L’étude des coïncidences gamma-gamma avec le détecteur ORGAM a cependant permis de mettre en évidence de nombreuses cascades de photons désexcitant des noyaux potentiellement produits par les réactions d’intérêt.Les données recueillies au cours d’une autre expérience, réalisée auprès du tandem d’Orsay en 2005, ont été analysées dans le cadre de ce travail. Cette expérience, visant à produire par fusion évaporation entre un faisceau de 14C à 25 MeV et une cible de 48Ca, les noyaux de 59Mn et de 57Cr, a permis d’établir une partie du spectre en énergie d’excitation de ces noyaux, jusqu'à une énergie d’excitation supérieure à 3 MeV.Une étude théorique des noyaux de chrome impairs de la couche fp a été tentée à l’aide d’un modèle phénoménologique de couplage intermédiaire. Ce modèle a permis une description satisfaisante du 53Cr. Les prédictions du modèle, qui ne prend pas en compte l’interaction entre nucléons de valence, se sont avérées beaucoup moins satisfaisante pour les noyaux de 55Cr et 57Cr
This PhD thesis was prepared within the nuclear structure group of IPN Orsay. The work presented aimed to produce neutron rich fp shell nuclei through heavy ion collisions at the tandem accelerator of IPN, and to study them using gamma spectroscopy. For this purpose, a germanium gamma array called ORGAM, and dedicated to high resolution gamma spectroscopy, was set up at the tandem accelerator. During the year 2008/2009, the individual germanium detectors were tested and repaired, as well as their ancillary anti-Compton shielding. At the same time, the liquid nitrogen auto-fill system was improved for better reliability. The array was finally set up on a beam line of the accelerator.The first experiment using the ORGAM array was performed in July 2009. This experiment aimed to study fully damped deep-inelastic collisions between a 36S beam accelerated to 154 MeV, and a 70Zn target. An additional charged particle detection system was used to detect interesting fragments emitted at backward angles. It was not possible to separate these fragments from the background induced by backscattered ions from the beam. Nevertheless, the study of gamma-gamma coincidences detected with the ORGAM array allowed to identify gamma cascades de-exciting nuclei potentially produced through the mechanism of interest. Data accumulated during another experiment performed at the tandem accelerator in 2005 were analyzed. Fusion-evaporation reaction between a 25 MeV, 14C beam focused on a 48Ca target produced the 57Cr and 59Mn nuclei, whose energy spectra were established up to 3 MeV.We attempted to study theoretically odd Chromium isotopes with a simple model based on the intermediate coupling scheme. This model, which doesn’t take into account correlation between valence nucleons, described in satisfactory way the semi-magic + 1 neutron, 53Cr, but failed to do so for mid-shell nuclei 55Cr and 57Cr

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18

Hreus, Tomas. "Studies of diffractive scattering of photons at large momentum transfer and of the VFPS detector at Hera". Doctoral thesis, Universite Libre de Bruxelles, 2008. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210430.

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In this thesis, two studies of the diffractive phenomena in the electron proton collisions with the H1 detector at HERA are presented.

The first is the study of the inclusive elastic diffractive events $ep \
Doctorat en Sciences
info:eu-repo/semantics/nonPublished

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19

Signal, Anthony Ian. "Deep inelastic scattering and the bag model". Thesis, 1988. http://hdl.handle.net/2440/18713.

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Typescript
Copies of three papers (2 published), co-authored by the author, in back
Bibliography: leaves 179-186
ix, 186 leaves : ill ; 30 cm.
Thesis (Ph.D.) -- University of Adelaide, Dept. of Physics and Mathematical Physics, 1988

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20

Melnitchouk, W. (Wally). "Non-perturbative aspects of deep inelastic scattering / Wolodymyr Melnitchouk". Thesis, 1993. http://hdl.handle.net/2440/21252.

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List of author's previously published works included
Bibliography: leaves 165-177
v, 177 leaves : ill ; 30 cm.
Thesis (Ph.D.)--University of Adelaide, Dept. of Physics and Mathematical Physics, 1994

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21

Melnitchouk, W. (Wally). "Non-perturbative aspects of deep inelastic scattering / Wolodymyr Melnitchouk". 1993. http://hdl.handle.net/2440/21252.

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List of author's previously published works included
Bibliography: leaves 165-177
v, 177 leaves : ill ; 30 cm.
Title page, contents and abstract only. The complete thesis in print form is available from the University Library.
Thesis (Ph.D.)--University of Adelaide, Dept. of Physics and Mathematical Physics, 1994

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22

Standage, Jeffrey E. "Determination of alpha(s) from inclusive jets and dijets at HERA using the ZEUS detector /". 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:NR29528.

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Thesis (Ph.D.)--York University, 2006. Graduate Programme in Physics and Astronomy.
Typescript. Includes bibliographical references (leaves 161-166). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:NR29528

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23

Schreiber, Andreas Wolfgang. "Spin dependent deep inelastic scattering / by Andreas Wolfgang Schreiber". Thesis, 1990. http://hdl.handle.net/2440/19272.

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Copies of author's previously published articles inserted
Bibliography : leaves 171-190
v, 190 leaves : ill ; 30 cm.
Thesis (Ph.D.)--University of Adelaide, Dept. of Physics and Mathematical Physics, 1991

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24

Schreiber, Andreas Wolfgang. "Spin dependent deep inelastic scattering / by Andreas Wolfgang Schreiber". 1990. http://hdl.handle.net/2440/19272.

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Copies of author's previously published articles inserted
Bibliography : leaves 171-190
v, 190 leaves : ill ; 30 cm.
Title page, contents and abstract only. The complete thesis in print form is available from the University Library.
Thesis (Ph.D.)--University of Adelaide, Dept. of Physics and Mathematical Physics, 1991

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25

Schilling, Frank-Peter [Verfasser]. "Diffractive jet production in deep inelastic e+p collisions at HERA / vorgelegt von Frank-Peter Schilling". 2001. http://d-nb.info/961853298/34.

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26

Maqabuka, Bongani Goodman. "Characterization of incomplete fusion reactions with DIAMANT and AFRODITE". Thesis, 2014. http://hdl.handle.net/10210/11312.

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M.Phil. (Chemistry)
This project concerns the study of , specifically, the incomplete fusion mechanism. The nuclear reaction 7Li + 176Yb at 50 MeV was therefore carried out using the AFRODITE and DIAMANT facility of iThemba LABS. A 7Li nuclide is considered suitable for the breakup fusion (incomplete fusion) reaction because of its well developed cluster structure of an -particle and triton which are weakly bound in this nucleus. One of the breakup fragments may be captured by the target while the other escapes at the beam velocity. Light charged-particles (alpha, tritons, deuterons and protons) were detected with the DIAMANT (CsI) array in co-incidence with gammarays detected by the AFRODITE (HPGe) spectrometer. The light particle detection in co-incidence with gamma detection was an important innovation that allowed exclusivity in the reconstruction of the mechanism by which specific residues were produced. Off-line data processing was used to produce charged-particle-gated gamma-gamma coincidence matrices which were analysed with the RADWARE software package. The level scheme exclusive to a particular channel for the production of the 178Hf was extracted. The relative cross-section for the various reaction channels could also therefore be extracted. In particular, the intensity ratios of gamma transitions as function of spin for proton to triton-gated matrices populating the 178Hf isotope were extracted. Insights could be developed into the incomplete fusion reaction mechanisms initiated by the breakup of the incident 7Li projectile.

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27

Wobisch, Markus [Verfasser]. "Measurement and QCD analysis of jet cross sections in deep inelastic positron proton collisions at √s= 300 GeV / vorgelegt von Markus Wobisch". 2000. http://d-nb.info/962395986/34.

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28

Cap, Tomasz. "Procesy wielonukleonowego transferu i fragmentacji układu 197Au + 197Au w głęboko-nieelastycznych zderzeniach przy energii 23A MeV". Doctoral thesis, 2017. https://depotuw.ceon.pl/handle/item/2598.

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