Reinvestigation of the excited states in the proton emitter ¹⁵¹Lu: particle-hole excitations across the N=Z=64 subshell

F. Wang , B.H. Sun , Z. Liu , C. Qi , L.H. Zhu , C. Scholey , S.F. Ashley , L. Bianco

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D.M. Cullen 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 R.D. Page J. Pakarinen S. Pietri Zs. Podoly\'ak P. Rahkila S. Rigby J. Sar\'en T. Shizuma J. Sorri S. Steer J. Thomson N.J. Thompson J. Uusitalo P.M. Walker S. Williams

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classification ⚛️ nucl-ex

keywords statesaboveemitterexcitationsexcitedlevelprotonscheme

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The excited states of the proton emitter $^{151}$Lu were reinvestigated in a recoil-decay tagging experiment at the Accelerator Laboratory of the University of Jyv\"askyl\"a (JYFL). The level scheme built on the ground state of $^{151}$Lu was updated with five new $\gamma$-ray transitions. Large-scale shell model calculations were carried out to interpret the experimental level scheme. It is found that the excitation energies of states above the $27/2^-$ and $23/2^+$ isomeric levels can be sensitive to excitations from $g_{7/2}$ and $d_{5/2}$ to single-particle orbitals above $N=Z=64$.

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Reinvestigation of the excited states in the proton emitter ¹⁵¹Lu: particle-hole excitations across the N=Z=64 subshell

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