Exploring the low-Z shore of the island of inversion at n=19.
Exploring the low-Z shore of the island of inversion at n=19.
复制标题
探索 n=19 处逆温岛的低 Z 岸。
DOI：
--
复制
发表时间：
2012
影响因子：
8.6
通讯作者：
A. Wersal
中科院分区：
文献类型：
--
作者：
G. Christian;N. Frank;S. Ash;T. Baumann;D. Bazin;J. Brown;P. DeYoung;J. Finck;A. Gade;G. Grinyer;A. Grovom;J. Hinnefeld;E. Lunderberg;B. Luther;M. Mosby;S. Mosby;T. Nagi;G. Peaslee;Warren F. Rogers;J. Smith;J. Snyder;A. Spyrou;M. Strongman;M. Thoennessen;M. Warren;D. Weisshaar;A. Wersal
用不变质谱学技术首次测量了220(50)keV的(27)F+n连续谱中未束缚的(28)F的基态能量。在(28)F中，由62 MeV/u(29)Ne束撞击288 mg/cm(2)铍靶的反应填充。测得的(28)F基态能量与USDA/USDB壳层模型的预测符合得很好，表明PF壳层结构对(28)F的基态结构只起到很小的作用，并建立了N=19的同素反转岛的低Z边界。
The technique of invariant mass spectroscopy has been used to measure, for the first time, the ground state energy of neutron-unbound (28)F, determined to be a resonance in the (27)F+n continuum at 220(50) keV. States in (28)F were populated by the reactions of a 62 MeV/u (29)Ne beam impinging on a 288 mg/cm(2) beryllium target. The measured (28)F ground state energy is in good agreement with USDA/USDB shell model predictions, indicating that pf shell intruder configurations play only a small role in the ground state structure of (28)F and establishing a low-Z boundary of the island of inversion for N=19 isotones.