Population of bound excited states in intermediate-energy fragmentation reactions
Population of bound excited states in intermediate-energy fragmentation reactions
复制标题
中能裂解反应中束缚激发态的总体
DOI：
10.1103/physrevc.73.044605
复制
发表时间：
2006
期刊：
影响因子：
--
通讯作者：
H. Zwahlen
中科院分区：
文献类型：
--
作者：
A. Obertelli;A. Gade;D. Bazin;C. Campbell;J. Cook;P. Cottle;A. Davies;D. Dinca;T. Glasmacher;P. Hansen;T. Hoagland;K. Kemper;J. Lecouey;W. Mueller;R. Reynolds;B. Roeder;J. R. Terry;J. Tostevin;K. Yoneda;H. Zwahlen
中能量重离子束的破碎反应表现出广泛的反应机制，从直接反应到统计过程。我们通过测量几个sd壳核中激发态的相对居数来检验这种转变，这些核是由分裂产生的，移除的核子数从2到16不等。两个核子的去除符合非耗散过程，而多于五个核子的去除似乎主要是统计上的。
Fragmentation reactions with intermediate-energy heavy-ion beams exhibit a wide range of reaction mechanisms, ranging from direct reactions to statistical processes. We examine this transition by measuring the relative population of excited states in several sd-shell nuclei produced by fragmentation with the number of removed nucleons ranging from two to sixteen. The two-nucleon removal is consistent with a non-dissipative process, whereas the removal of more than five nucleons appears to be mainly statistical.