Brechtmann C, Heinrich W, Benton E V
Department of Physics, University of Siegen, Federal Republic of Germany.
Phys Rev C Nucl Phys. 1989 Jun;39(6):2222-6. doi: 10.1103/physrevc.39.2222.
We used CR39 plastic nuclear track detectors (C12H18O7) in combination with automatic track measurement techniques to determine total charge changing and partial cross sections for the production of fragments of charge ZF = 6 to ZF = 13 in collisions of 28Si beam nuclei at 14.5 GeV/nucleon in targets H, C, CR39, (C18H38O), Al, Cu, Ag, and Pb. By application of factorization rules, measured partial cross sections are separated into pure nuclear and electromagnetic components. The cross sections for electromagnetic dissociation agree with theoretical models. The results are consistent with a Z2 dependence of virtual photon spectra.
我们使用CR39塑料核径迹探测器（C12H18O7）结合自动径迹测量技术，来确定在以14.5 GeV/核子的28Si束流核与靶物质H、C、CR39（C18H38O）、Al、Cu、Ag和Pb碰撞中，产生电荷数ZF = 6至ZF = 13的碎片时的总电荷变化和部分截面。通过应用因子分解规则，将测得的部分截面分离为纯核成分和电磁成分。电磁离解的截面与理论模型相符。结果与虚拟光子谱的Z2依赖性一致。
