Oblately deformed isomeric proton-emitting state in 151 Lu
Oblately deformed isomeric proton-emitting state in 151 Lu
复制标题
151 Lu 中的扁变形异构质子发射态
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
M. Doncel
中科院分区：
文献类型：
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作者：
A. Smith;A. McFarlane;V. Twist;G. Alharshan;L. Ferreira;E. Maglione;K. Auranen;T. Grahn;P. Greenlees;K. Hauschild;A. Herzáň;U. Jakobsson;R. Julin;S. Juutinen;S. Ketelhut;J. Konki;M. Leino;A. Lopez;J. Pakarinen;J. Partanen;P. Peura;P. Rahkila;S. Rinta;P. Ruotsalainen;M. Sandzelius;J. Sarén;C. Scholey;J. Sorri;S. Stolze;J. Uusitalo;M. Doncel
第一次观察到了来自激发态的伽马射线，它在151 Lu中注入了质子发射异构态。与最先进的非绝热准粒子计算的比较表明，它是一个扁形变的3 / 2 +质子发射态，四极形变β 2 = − 0。11.计算表明四极形变增加到β 2 = − 0。18，随着自旋的增加，这是根据费米表面的尼尔森态的混合来理解的。它还表明，质子衰变半衰期与β 2 = − 0的四极形变的3 / 2 +态一致。12.
Gamma rays from excited states feeding a proton-emitting isomeric-state in 151 Lu have been observed for the first time. Comparison with state-of-the-art nonadiabatic quasiparticle calculations indicates an oblately deformed, 3 / 2 + proton-emitting state with a quadrupole deformation of β 2 = − 0 . 11. The calculations suggest an increase in quadrupole deformation, to β 2 = − 0 . 18, with increasing spin which is understood in terms of the mixing of Nilsson states at the Fermi surface. It is also shown that the proton decay half-life is consistent with that from a 3 / 2 + state with a quadrupole deformation of β 2 = − 0 . 12.