Spectroscopic factor and proton formation probability for the d3/2 proton emitter 151mLu

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. JossR. 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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish
Pages (from-to)83-87
Number of pages5
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Early online date20 Apr 2017
Publication statusPublished - 10 Jul 2017

Bibliographical note

©2017 The Authors


  • A=151
  • Proton emitter
  • Proton formation probability
  • Recoil-decay tagging
  • Spectroscopic factor
  • WKB approximation

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