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Date, S.; Gyulassy, M.; Sumiyoshi, H.
Nuclear Science Division annual report, October 1, 1983-September 30, 19841985
Nuclear Science Division annual report, October 1, 1983-September 30, 19841985
AbstractAbstract
[en] The recent data on p + A → p + X at 100 GeV have generated a great deal of interest in nuclear stopping power. The first analysis of that data indicated that a high energy proton can lose over 90% of its initial energy when penetrating the diameter of a heavy nucleus. This is a surprise in light of a decade of previous data indicating that nuclei are rather transparent at high energies. In terms of rapidity shift it appeared that up to 2.5 units of rapidity loss is possible. If the data, and interpretations are correct, then they have profound consequences for the energy density that could be generated in nuclear collisions between 10 and 100 GeV/nucleon. Because of the importance of this conclusion the authors reanalyzed the data using the multichain model which allows (1) treatment of diffuse nuclear geometry, (2) differential energy loss, and (3) secondary (π, K, ...) production
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Mahoney, J. (ed.); Lawrence Berkeley Lab., CA (USA); p. 166-167; May 1985; p. 166-167; Available from NTIS, PC A12/MF A01; 1 as DE85013312
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Date, S.; Gyulassy, M.; Sumiyoshi, H.
Tokyo Univ., Tanashi (Japan). Inst. for Nuclear Study1985
Tokyo Univ., Tanashi (Japan). Inst. for Nuclear Study1985
AbstractAbstract
[en] Recent p + A → p + X data are analyzed within the context of the multi-chain and additive quark models. We deduce the average energy loss of a baryon as a function of distance traversed in nuclear matter. Consistency of the multi-chain model is checked by comparing the predictions for p + A → π+- + X with data. We discuss the space-time development of baryon stopping and show how longitudinal growth limits the energy deposition per unit length. Predictions are made for the proton spectra to be measured in nucleus-nucleus collisions at CERN and BNL. Finally, we conclude that the stopping domain for central collisions of heavy ions extends up to center of mass kinetic energies KEsub(em) asymptotically equals 3 +- 1 AGev. (author)
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Mar 1985; 48 p
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Report
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AbstractAbstract
No abstract available
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(c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
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Journal Article
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BARYONS, BASIC INTERACTIONS, CHARGED PARTICLES, ELECTROMAGNETIC INTERACTIONS, ELEMENTARY PARTICLES, FERMIONS, HADRONS, HYPERONS, INTERACTIONS, LAMBDA BARYONS, NUCLEAR REACTIONS, PARTICLE INTERACTIONS, PARTICLE PRODUCTION, PHOTON-BARYON INTERACTIONS, PHOTON-HADRON INTERACTIONS, STRANGE PARTICLES, TARGETS
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Joly, V. L. Joseph; Joy, P. A.; Date, S. K.
Funding organisation: (United States)2001
Funding organisation: (United States)2001
AbstractAbstract
No abstract available
Source
Othernumber: APPLAB000078000023003747000001; 016123APL; The American Physical Society
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Journal Article
Journal
Applied Physics Letters; ISSN 0003-6951; ; v. 78(23); p. 3747-3748
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Kurihara, Y.; Date, S.; Nakamura, A.; Sato, H.; Sumiyoshi, H.; Yoshinada, K.
Tokyo Univ., Tanashi (Japan). Inst. for Nuclear Study1985
Tokyo Univ., Tanashi (Japan). Inst. for Nuclear Study1985
AbstractAbstract
[en] The origin of the mass number dependence of the nucleon structure functions extracted from the deep inelastic lepton-nucleus scattering is investigated by factorizing the structure function into A and x dependent parts. It is found that the mass number dependence is determined by the probability of exotic components in multi-nucleon overlap. This suggests that the deformation of the nucleon structure function is caused by the interaction among nucleons during their overlap. (author)
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Mar 1985; 18 p
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Report
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[en] The SPring-8 storage ring is under the operation dedicated to synchrotron light users since October, 1997. The stability of the electron beam orbit during a long term of the operation is one of the main subjects to be achieved. Data on the beam orbit taken for this purpose show very clear signature of an effect of the earth tide. (author)
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Journal Article
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Science and Technology in Japan; ISSN 0286-0406; ; v. 16(65); p. 30-32
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AbstractAbstract
[en] The systematic source suppression in the SPring-8 storage ring successfully improves the slow and fast orbit stability. The vertical fast orbit stability reaches to 1μm level and we are now ready for proceeding to the second step toward sub-micron orbit stability. Regarding to the slow orbit drift there remains some room for the improvement to reduce the drift down to the reproducibility of BPMs, which is about 1μm. The fast and precise orbit feedback system is now under development and the orbit feedback correction will start in three years. (author)
Primary Subject
Source
Japan Synchrotron Radiation Research Institute, Mikazuki, Hyogo (Japan); [687 p.]; 2003; p. 1-8; IWAA2002: 7. International workshop on accelerator alignment; Mikazuki, Hyogo (Japan); 11-14 Nov 2002; This CD-ROM can be used for WINDOWS 9x/NT/2000/ME/XP, MACINTOSH; Acrobat Reader is included; Data in PDF format Htana02.pdf; 14 refs., 6 figs., 1 tab.
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[en] We argue that multiquark clusters in nuclei are not necessarily colour singlet configurations if the nuclei are probed at large Q2. Employing the constituent counting rule and studying the effect of QCD scaling violation on the multiquark structure functions, we find that the four-quark cluster dominates the exotic component of the nuclear structure function. (author)
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[en] Charged secondary multiplicity distributions for various nucleus-nucleus collisions at 200 and 15 GeV/nucleon are calculated based on the hypothesis of universal Koba-Nielsen-Olesen scaling at each impact parameter. The correlation between the multiplicity cut and the cut in impact parameter is also discussed
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[en] Recent p+A→p+X data are analyzed within the context of the multichain and additive quark models. We deduce the average energy loss of a baryon as a function of distance traversed in nuclear matter. Consistency of the multichain model is checked by comparing the predictions for p+A→π+-+X with data. We discuss the space-time development of baryon stopping and show how longitudinal growth limits the energy deposition per unit length. Predictions are made for the proton spectra to be measured in nucleus-nucleus collisions at CERN and BNL. Finally, we conclude that the stopping domain for central collisions of heavy ions extends up to center-of-mass kinetic energies E/sub c.m./roughly-equal(3 +- 1)A GeV
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Journal Article
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BARYON REACTIONS, BARYONS, CATIONS, CHARGED PARTICLES, COMPOSITE MODELS, ELEMENTARY PARTICLES, ENERGY, FERMIONS, HADRON REACTIONS, HADRONS, HYDROGEN IONS, HYDROGEN IONS 1 PLUS, INTERACTIONS, IONS, MATHEMATICAL MODELS, MATTER, NUCLEAR REACTIONS, NUCLEON REACTIONS, NUCLEONS, PARTICLE INTERACTIONS, PARTICLE MODELS, POSTULATED PARTICLES, SPECTRA
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