Cross-shell states in $^{15}$C: a test for p-sd interactions
J. Lois-Fuentes, B. Fernández-Domínguez, X. Pereira-López, F. Delaunay, W. N. Catford, A. Matta, N. A. Orr, T. Duguet, T. Otsuka, V. Somà, O. Sorlin, T. Suzuki,… 展开作者
J. Lois-Fuentes, B. Fernández-Domínguez, X. Pereira-López, F. Delaunay, W. N. Catford, A. Matta, N. A. Orr, T. Duguet, T. Otsuka, V. Somà, O. Sorlin, T. Suzuki, N. L. Achouri, M. Assié, S. Bailey, B. Bastin, Y. Blumenfeld, R. Borcea, M. Caamaño, L. Caceres, E. Clément, A. Corsi, N. Curtis, Q. Deshayes, F. Farget, M. Fisichella, G. de France, S. Franchoo, M. Freer, J. Gibelin, A. Gillibert, G. F. Grinyer, F. Hammache, O. Kamalou, A. Knapton, Tz. Kokalova, V. Lapoux, B. Le Crom, S. Leblond, F. M. Marqués, P. Morfouace, J. Pancin, L. Perrot, J. Piot, E. Pollacco, D. Ramos, D. Regueira-Castro, C. Rodríguez-Tajes, T. Roger, F. Rotaru, M. Sénoville, N. de Séréville, R. Smith, M. Stanoiu, I. Stefan, C. Stodel, D. Suzuki, J. C. Thomas, N. Timofeyuk, M. Vandebrouck, J. Walshe, C. Wheldon
The low-lying structure of $^{15}$C has been investigated via the neutron-removal $^{16}$C$(d,t)$ reaction. Along with bound neutron sd-shell hole states, unbound p-shell hole states have been firmly confirmed. The excitation energies and the deduced spectroscopic factors of the cross-shell states are an important measure of the $[(p)^{-1}(sd)^{2}]$ neutron configurations in $^{15}$C. Our results show a very good agreement with shell-model calculations using the SFO-tls interaction for $^{15}$C. However, a modification of the $p$-$sd$ and $sd$-$sd$ monopole terms was applied in order to reproduce the $N=9$ isotone $^{17}$O. In addition, the excitation energies and spectroscopic factors have been compared to the first calculations of $^{15}$C with the $ab~ initio$ self-consistent Green's function method employing the NNLO$_{sat}$ interaction. The results show the sensitivity to the size of the $N=8$ shell gap and highlight the need of going beyond the current truncation scheme in the theory.
Employing $p+^{58}$Ni elastic scattering for determination of $K$-shell ionization cross section of $^{58}$Ni$^{19+}$ in collisions with hydrogen gas target at 95 MeV/u
提出了一种测量储存环中低电荷态离子与氢气靶碰撞的内壳层电离截面的新方法。该方法是基于一个众所周知的质子弹性散射的微分截面的核校准。本文测量了95 MeV/uPDMATHABMN Ni $^{19+}$离子与氢原子碰撞的1047（100）靶的$K$壳层电离截面。通过与实测电离截面的比较，验证了相对论电离修正程序（RICODE-M）的预测结果。
Electric dipole strength in $sd$-shell nuclei from small-angle proton scattering
University of Cape Town（开普敦大学）；Université de Strasbourg（斯特拉斯堡大学）；CNRS（法国国家科学研究中心）；Osaka University（大阪大学）；Fujita Health University（藤田医科大学）；Technische Universität Darmstadt（达姆施塔特工业大学）
Two-proton removal from $^{44}$S and the structure of $^{42}$Si
新发表的$^{42}$ Si γ射线能谱和一个包含末态的$^{42}$ Si产生截面值，在一个更高统计的中能两质子去除实验从$^{44}$ S获得，被认为是在末态排它的截面使用建议的壳模型有效相互作用计算的N=28附近的核。具体地说，我们给出了使用新提出的{ \sc sdpf-mu}壳模型哈密顿量计算的双质子重叠$<^{42}$ Si $ (J^π)\,|\,^{44}$ S $>$的两个核子振幅时的截面预测。我们发现，这些部分截面或其纵向动量分布应使测量的伽马射线谱的不那么试探性的解释，并提供了一个更定量的评估建议壳模型哈密顿在这个有趣的和具有挑战性的区域的核素图。
The influence of shell effects on the fissility of neutron deficient uranium isotopes at N ~ 126
测量了22 Ne +208 Pb反应中U、Pa和Th缺中子同位素的产生截面和激发函数。对中子数为126 <= N <= 134的铀同位素的实验产生截面与用核去激统计模型计算的结果进行了比较。有示出，没有一个常用的方法引入壳效应的影响，蒸发残留物的生产截面允许复制unambigiously使用的一组实验数据。提出了在裂变通道中引入壳效应影响的简单半经验方法，并与Bi ~ U区缺中子同位素产生截面符合良好。
