期刊
PHYSICAL REVIEW C
卷 80, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.80.044902
关键词
-
资金
- US Department of Energy [DE-AC-03076SF00098, DE-AC0298CH10886]
Highly charged relativistic heavy ions have high cross sections for two-photon interactions. The photon flux is high enough that two-photon interactions may be accompanied by additional photonuclear interactions. Except for the shared impact parameter, these interactions are independent. Additional interactions like mutual Coulomb excitation are of experimental interest, because the neutrons from the nuclear dissociation provide a simple, relatively unbiased trigger. We calculate the cross sections, rapidity, mass, and transverse momentum (p(T)) distributions for exclusive gamma gamma production of mesons and lepton pairs and for gamma gamma reactions accompanied by mutual Coulomb dissociation. The cross sections for gamma gamma interactions accompanied by multiple neutron emission (XnXn) and single-neutron emission (1n1n) are about 1/10 and 1/100 of that for the unaccompanied gamma gamma interactions. We discuss the accuracy with which these cross sections may be calculated. The typical p(T) of gamma gamma final states is several times smaller than for comparable coherent photonuclear interactions, so p(T) may be an effective tool for separating the two classes of interactions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据