Application of isochronous mass spectrometry for the study of angular momentum population in projectile fragmentation reactions
Application of isochronous mass spectrometry for the study of angular momentum population in projectile fragmentation reactions
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DOI：
10.1103/physrevc.95.014610
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发表时间：
2017-01
影响因子：
3.1
通讯作者：
X. Tu;X. Tu;A. Kelić-Heil;Y. Litvinov;Y. Litvinov;Z. Podolyák;Y. Zhang;W. Huang;W. Huang-W.-H
中科院分区：
文献类型：
--
作者：
X. Tu;X. Tu;A. Kelić-Heil;Y. Litvinov;Y. Litvinov;Z. Podolyák;Y. Zhang;W. Huang;W. Huang-W.-H
同位素质谱法用于测定裂解反应产物的异构体产率。这种方法是传统的g -射线光谱学的补充，特别是用于测量长寿命异构态的产率比。测量了镜像核~（53）Fe和~（53）Co中高自旋I = 19=2 <$h态的同质异能态产额比，研究了~（78）Kr在480 A MeV的铍靶上碎裂后的角动量布居.还提取了文献中不同弹丸产生的~（53）Fe的19/2态同质异能比随弹丸与碎片质量数差（质量损失）的变化关系。将计算结果与ABRABLA 07模型计算结果进行了比较。使用不同的射弹产生的53 Fe的同质异能比表明，该理论不仅低估了先前报道的自旋的依赖性，而且低估了质量损失的依赖性。
Isochronous mass spectrometry was applied to measure isomeric yield ratios of fragmentation reaction prod- ucts. This approach is complementary to conventional g -ray spectroscopy in particular for measuring yield ratios for long-lived isomeric states. Isomeric yield ratios for the high-spin I = 19=2¯h states in the mirror nuclei 53Fe and 53Co are measured to study angular momentum population following the projectile fragmentation of 78Kr at energies of 480 A MeV on a beryllium target. The 19/2 state isomeric ratios of 53Fe produced from different projectiles in literature have also been extracted as a function of mass number difference between projectile and fragment (mass loss). The results are compared to ABRABLA07 model calculations. The isomeric ratios of 53Fe produced using different projectiles suggest that the theory underestimates not only the previously reported dependence on the spin but also the dependence on the mass loss.