학술논문
Spectroscopic factor and proton formation probability for the d3/2 proton emitter 151mLu
Document Type
article
Author
F. Wang; B.H. Sun; Z. Liu; R.D. Page; C. Qi; C. Scholey; S.F. Ashley; L. Bianco; I.J. Cullen; I.G. Darby; S. Eeckhaudt; A.B. Garnsworthy; W. Gelletly; M.B. Gomez-Hornillos; T. Grahn; P.T. Greenlees; D.G. Jenkins; G.A. Jones; P. Jones; D.T. Joss; R. Julin; S. Juutinen; S. Ketelhut; S. Khan; A. Kishada; M. Leino; M. Niikura; M. Nyman; J. Pakarinen; S. Pietri; Z. Podolyak; P. Rahkila; S. Rigby; J. Saren; T. Shizuma; J. Sorri; S. Steer; J. Thomson; N.J. Thompson; J. Uusitalo; P.M. Walker; S. Williams; H.F. Zhang; W.Q. Zhang; L.H. Zhu
Source
Physics Letters B, Vol 770, Iss C, Pp 83-87 (2017)
Subject
Language
English
ISSN
0370-2693
1873-2445
1873-2445
Abstract
The quenching of the experimental spectroscopic factor for proton emission from the short-lived d3/2 isomeric state in 151mLu was a long-standing problem. In the present work, proton emission from this isomer has been reinvestigated in an experiment at the Accelerator Laboratory of the University of Jyväskylä. The proton-decay energy and half-life of this isomer were measured to be 1295(5) keV and 15.4(8) μs, respectively, in agreement with another recent study. These new experimental data can resolve the discrepancy in the spectroscopic factor calculated using the spherical WKB approximation. Using the R-matrix approach it is found that the proton formation probability indicates no significant hindrance for the proton decay of 151mLu.