Inclusive neutron cross-sections at forward angles from Nb Nb and Au Au collisions at 800-MeV/nucleon

Inclusive neutron spectra were measured at 0°, 4°, 8°, 15°, 30°, and 42° from Nb-Nb and Au-Au collisions at 800 MeV/nucleon. A peak that originates from neutron evaporation from the projectile appears in the spectra at a
Inclusive neutron spectra were measured at 0°, 4°, 8°, 15°, 30°, and 42° from Nb-Nb and Au-Au collisions at 800 MeV/nucleon. A peak that originates from neutron evaporation from the projectile appears in the spectra at angles out to 8°. The shapes and magnitudes of the spectra are compared with those calculated from models of nucleus-nucleus collisions. The differential cross sections for Au-Au collisions are about four times those for Nb-Nb collisions. The predictions of the Vlasov-Uehling-Uhlenbeck (VUU) and QMD theories agree with the angular distributions of the differential cross sections except at small angles; the VUU prediction overestimates the angular distributions from a few degrees to about 20°, whereas the QMD prediction underestimates the angular distributions below 8°. The Firestreak model overestimates the angular distribution for Nb-Nb collisions and underestimates it for Au-Au collisions. Also, the VUU and QMD models agree with the measured double-differential cross sections in more angular and energy regions than the Firestreak and intranuclear cascade models; however, none of the models can account for the peaks at small angles (θ≤15°).
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Metadaten
Author:R. Madey, W. M. Zhang, B. D. Anderson, A. R. Baldwin, M. Elaasar, B. S. Flanders, D. Keane, W. Pairsuwan, J. Varga, J. W. Watson, G. D. Westfall, C. Hartnack, Horst Stöcker, K. Frankel
URN:urn:nbn:de:hebis:30-27265
Document Type:Article
Language:English
Date of Publication (online):2006/06/02
Year of first Publication:1990
Publishing Institution:Univ.-Bibliothek Frankfurt am Main
Release Date:2006/06/02
Source:Phys. Rev. C 42, 1068~V1076 (1990) ; ©1990 The American Physical Society ; http://link.aps.org/abstract/PRC/v42/p1068
HeBIS PPN:188716963
Institutes:Physik
Dewey Decimal Classification:530 Physik
Sammlungen:Universitätspublikationen
Licence (German):License Logo Veröffentlichungsvertrag für Publikationen

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