Origin of odd-even staggering in fragment yields: Impact of nuclear pairing and shell structure on the particle-emission threshold energy
Origin of odd-even staggering in fragment yields: Impact of nuclear pairing and shell structure on the particle-emission threshold energy
复制标题
碎片产量奇偶惊人的起源：核配对和壳层结构对粒子发射阈值能量的影响
DOI：
10.1103/physrevc.89.054612
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发表时间：
2014-05
影响因子：
3.1
通讯作者：
Zhan, W. L.
中科院分区：
文献类型：
--
作者：
Xu, X.;Yan, X. L.;Zhang, W.;Zhan, W. L.
利用飞行碎片分离器和储存环的组合，测量了78Kr弹丸破碎产生的碎片产额的强奇偶交错(OES)。结果表明，Tz=−1/2andTz=1/2镜面核的碎片产率的OES与配对和壳层结构密切相关，特别是在Z=20和28的闭合壳层。比较了碎片产额和粒子发射阈值能量的相对OES，明确地表明碎片产额的OES的来源主要由粒子发射阈值能量的OES决定，它同时包含配对效应和壳层效应。
Strong odd-even staggering (OES) of the yields of fragments, produced by fragmenting 78 Kr projectiles, has been measured by employing the combination of an in-flight fragment separator and a storage ring. It is shown that the OES of fragment yields of Tz =− 1/ 2a ndTz = 1/2 mirror nuclei critically depends on both pairing and shell structure, especially at the closed shells Z = 20 and 28. A comparison of the relative OES of yields and of particle-emission threshold energies reveals unambiguously that the origin of the OES of fragment yields is mainly determined by the OES of the particle-emission threshold energies, which contain both pairing and shell effects.