The fission of lead projectiles has been investigated at the CERN SPS by the NA50 experiment. For this study, a Cherenkov quartz detector was added to the standard NA50 setup to measure the charge of projectile like fragments. The data collected on different targets at 40 and 158 GeV/c per nucleon are presented here. The contributions arising from the nuclear and the electromagnetic fission mechanism are extracted from the measured fission cross sections; the electromagnetic contribution is then compared to the Weizsäcker-Williams predictions.
Fission cross sections of lead projectiles in Pb-nucleus interactions at 40 and 158 GeV/c per nucleon / Alessandro, B; Alexa, C; Arnaldi, R; Atayan, M; Baglin, C; Baldit, A; Bedjidian, M; Beole, S; Boldea, V; Bordalo, P; Borges, G; Bussiere, A; Capelli, L; Castanier, C; Castor, J; Chaurand, B; Cheynis, B; Chiavassa, E; Cicalo, C; Comets, Mp; Constantinescu, S; Cortese, P; Dellacasa, G; Devaux, A; DE FALCO, A; Marco, Nd; Dita, S; Espagnon, B; Fargeix, J; Ferretti, A; Force, P; Gallio, M; Gerschel, C; Giubellino, P; Golubeva, Mb; Grigoryan, Aa; Grigoryan, S; Guber, Ff; Guichard, A; Gulkanyan, H; Idzik, M; Jouan, D; Karavicheva, Tl; Kluberg, L; Kurepin, Ab; LE BORNEC, Y; Macciotta, P; MAC CORMICK, M; MARZARI-CHIESA, A; Masera, M; Masoni, A; Monteno, M; Musso, A; Oppedisano, C; Piccotti, A; Pizzi, Jr; Prino, F; Puddu, G; Quintans, C; Ramello, L; Ramos, S; Mendes, Pr; Riccati, L; Santos, H; Saturnini, P; Scalas, E; Scomparin, E; Serci, S; Shahoian, R; Sigaudo, F; Sitta, M; Sonderegger, P; Tarrago, X; Topilskaya, Ns; Usai, Gl; Vercellin, E; Villatte, L; Willis, N. - In: PHYSICAL REVIEW. C, NUCLEAR PHYSICS. - ISSN 0556-2813. - 69:(2004), pp. 034904-1. [10.1103/PhysRevC.69.034904]
Fission cross sections of lead projectiles in Pb-nucleus interactions at 40 and 158 GeV/c per nucleon
SCALAS E;
2004
Abstract
The fission of lead projectiles has been investigated at the CERN SPS by the NA50 experiment. For this study, a Cherenkov quartz detector was added to the standard NA50 setup to measure the charge of projectile like fragments. The data collected on different targets at 40 and 158 GeV/c per nucleon are presented here. The contributions arising from the nuclear and the electromagnetic fission mechanism are extracted from the measured fission cross sections; the electromagnetic contribution is then compared to the Weizsäcker-Williams predictions.| File | Dimensione | Formato | |
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