arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0803.3923nucl-ex
收藏

37 K的四极矩

Quadrupole Moment of 37K

P. F. Mantica, H. L. Crawford, J. S. Pinter, J. B. Stoker, Y. Utsuno, R. R. Weerasiri

摘要:

在37 K(3/2+,1.22 s)的四氢磷酸二氢钾单晶中测量了基态的电四极耦合常数为|当量/小时|= 2.99 ± 0.07 MHz,使用β射线探测核四极共振技术。确定了37 K的电四极矩为:|Q(37K)|= 10.6 ± 0.4 efm 2,其中使用KH 2 PO 4晶体中稳定的39 K的已知电四极耦合常数作为参考。本实验结果比在sd或sd和fp模型空间中用壳模型计算的结果要大。探讨了有效电荷的可能变化来解释这种差异。

英文摘要:

The electric quadrupole coupling constant of the ground state of 37K(3/2+, 1.22 s) in a tetragonal KH2PO4 single crystal was measured to be |eqQ/h| = 2.99 +- 0.07 MHz using the beta-ray detecting nuclear quadrupole resonance technique. The electric quadrupole moment of 37K was determined to be |Q(37K)| = 10.6 +- 0.4 efm2, where the known electric quadrupole coupling constant of stable 39K in the KH2PO4 crystal was used as a reference. The present experimental result is larger than that predicted by shell-model calculations in the sd or the sd and fp model spaces. A possible variation of effective charges was explored to explain the discrepancy.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑