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Separating isoscalar and isovector dipole excitations in 6Li and 6He using heavy-ion collisions and nuclear-Coulomb interference effects
Nuclear Physics A ( IF 1.4 ) Pub Date : 2021-04-22 , DOI: 10.1016/j.nuclphysa.2021.122204
W. Horiuchi , T. Furumoto

Nuclear dipole excitation has been used as a probe of nuclear structure. To unveil the structure of various excitation modes proposed up to date, a study of isoscalar (IS) and isovector (IV) dipole excitations has been of particular importance. In this paper, we discuss the possibility of separating the dipole excitation cross sections into the IS and IV contributions using heavy-ion collisions at high-incident energies from 100 to 400 MeV/nucleon. We examine the dipole transitions of 6Li and 6He on carbon and lead targets and quantify the nuclear, Coulomb, and their interference contributions. We show that the IS and IV separation can be made in a certain degree of accuracy when appropriate target and incident energies are chosen for each case of 6Li and 6He.



中文翻译:

利用重离子碰撞和核-库仑干涉效应分离6 Li和6 He中的等量和等矢量偶极子激发

核偶极激发已被用作核结构的探针。为了揭示最新提出的各种激励模式的结构,对等标量(IS)和等矢量(IV)偶极子激励的研究尤为重要。在本文中,我们讨论了在100到400 MeV /核子的高入射能量下使用重离子碰撞将偶极子激发截面分成IS和IV贡献的可能性。我们研究了6 Li和6 He在碳和铅靶上的偶极跃迁,并对核,库仑及其干扰贡献进行了量化。我们显示出,对于每种6 Li和10 Li情况,选择适当的目标能量和入射能量时,IS和IV分离可以在一定程度上实现准确度。6

更新日期:2021-04-28
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