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Titolo:
Exclusive studies of angular distributions in GeV hadron-induced reactionswith Au-197 - art. no. 034609
Autore:
Hsi, WC; Kwiatkowski, K; Wang, G; Bracken, DS; Cornell, E; Ginger, DS; Viola, VE; Korteling, RG; Morley, KB; Huang, R; Lynch, WG; Tsang, MB; Xi, H; Gimeno-Nogues, F; Ramakrishnan, E; Rowland, D; Yennello, SJ; Breuer, H; Gushue, S; Remsberg, LP; Botvina, A; Friedman, WA;
Indirizzi:
Indiana Univ, Dept Chem, Bloomington, IN 47405 USA Indiana Univ Bloomington IN USA 47405 ept Chem, Bloomington, IN 47405 USA Indiana Univ, IUCF, Bloomington, IN 47405 USA Indiana Univ Bloomington INUSA 47405 iv, IUCF, Bloomington, IN 47405 USA Simon Fraser Univ, Dept Chem, Burnaby, BC V5A I56, Canada Simon Fraser Univ Burnaby BC Canada V5A I56 , Burnaby, BC V5A I56, Canada Univ Calif Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87545 USA Univ Calif Los Alamos Natl Lab Los Alamos NM USA 87545 amos, NM 87545 USA Michigan State Univ, Dept Phys, E Lansing, MI 48824 USA Michigan State Univ E Lansing MI USA 48824 Phys, E Lansing, MI 48824 USA Michigan State Univ, NSCL, E Lansing, MI 48824 USA Michigan State Univ E Lansing MI USA 48824 NSCL, E Lansing, MI 48824 USA Texas A&M Univ, Dept Chem, College Stn, TX 77843 USA Texas A&M Univ College Stn TX USA 77843 t Chem, College Stn, TX 77843 USA Texas A&M Univ, Inst Cyclotron, College Stn, TX 77843 USA Texas A&M Univ College Stn TX USA 77843 lotron, College Stn, TX 77843 USA Univ Maryland, Dept Phys, College Pk, MD 20740 USA Univ Maryland College Pk MD USA 20740 Dept Phys, College Pk, MD 20740 USA Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA Brookhaven Natl Lab Upton NY USA 11973 ab, Dept Chem, Upton, NY 11973 USA Univ Bologna, Dept Phys, I-40126 Bologna, Italy Univ Bologna Bologna Italy I-40126 na, Dept Phys, I-40126 Bologna, Italy Univ Wisconsin, Dept Phys, Madison, WI 53706 USA Univ Wisconsin Madison WI USA 53706 sin, Dept Phys, Madison, WI 53706 USA
Titolo Testata:
PHYSICAL REVIEW C-NUCLEAR PHYSICS
fascicolo: 3, volume: 6003, anno: 1999,
pagine: 4609 -
SICI:
0556-2813(199909)6003:3<4609:ESOADI>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
INTERMEDIATE ENERGIES; FRAGMENT PRODUCTION; COLLISIONS; MULTIFRAGMENTATION; PROTONS; NUCLEI; SPECTRA; BUBBLE; 4-PI; AU;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
36
Recensione:
Indirizzi per estratti:
Indirizzo: Hsi, WC Indiana Univ, Dept Chem, Bloomington, IN 47405 USA Indiana Univ Bloomington IN USA 47405 , Bloomington, IN 47405 USA
Citazione:
W.C. Hsi et al., "Exclusive studies of angular distributions in GeV hadron-induced reactionswith Au-197 - art. no. 034609", PHYS REV C, 6003(3), 1999, pp. 4609

Abstract

Exclusive studies of angular distributions for intermediate-mass fragments(IMFs) produced in GeV hadron-induced reactions have been performed with the Indiana Silicon Sphere (ISiS) 4 pi detector array. Special emphasis has been given to understanding the origin of sideways peaking, which becomes prominent in the angular distributions for beam momenta above about 10 GeV/c. Both the magnitude of the effect and the peak angle increase as a function of fragment multiplicity and charge. When gated on IMF kinetic energy, the angular distributions evolve from forward-peaked to near isotropy as the fragment kinetic energy decreases. Fragment-fragment angular-correlation analyses show no obvious evidence for a dynamic mechanism that might signal shock wave effects or the breakup of exotic geometric shapes such as bubblesor toroids. Moving-source and intranuclear cascade simulations suggest that the observed sideways peaking is of kinematic origin, arising from significant transverse momentum imparted to the heavy recoil nucleus during the fast cascade stage of the collision. A hyo-step cascade and statistical multifragmentation calculation is consistent with this assumption. [S0556-2813(99)02909-X].

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Documento generato il 27/11/20 alle ore 13:51:31