Excited States In Ra-217 Populated In The Alpha Decay Of Th-221

E. Parr,J. F. Smith,P. T. Greenlees, K. Auranen,R. Chapman,D. M. Cullen,T. Grahn, L. Grocutt, A. Herzan,R-D Herzberg, D. Hodge, U. Jakobsson,R. Julin,S. Juutinen,J. Konki, C. Mcpeake,D. Mengoni,A. K. Mistry, K. F. Mulholland, G. G. O'Neill, J. Pakarinen,P. Papadakis,J. Partanen, P. Peura, P. Rahkila, P. Ruotsalainen,M. Sandzelius, J. Saren,M. Scheck,C. Scholey, M. Siciliano,M. Smolen, J. Sorri, S. Stolze,M. J. Taylor,J. Uusitalo

PHYSICAL REVIEW C（2020）

引用 3|浏览11

暂无评分

摘要

Fine structure in the alpha decay of Th-221(90) , populating excited states in( 88)(217)Ra, was studied using alpha gamma-coincidence spectroscopy. Two alpha-decay branches from Th-221 have been newly observed, with E-alpha(keV)[b(alpha)(%)] = 7951(8)[0.14(3)] and 8247(3)[1.51(12)], together with three previously known branches. Also, two new states in Ra-217 were identified at E = 177 and 227 keV. The ground-state configurations of the odd-A, N = 131 transitional isotones above Pb-208 are interpreted from their a-decay fine structure systematics and considered in terms of predictions using spherical shell and reflection-asymmetric models.

查看译文

AI 理解论文

溯源树

样例

生成溯源树，研究论文发展脉络

Chat Paper

正在生成论文摘要