Single-neutron states in (101)Sn.
The first data on the relative single-particle energies outside the doubly magic (100)Sn nucleus were obtained. A prompt 171.7(6) keV gamma-ray transition was correlated with protons emitted following the beta decay of (101)Sn and is interpreted as the transition between the single-neutron g(7/2) and d(5/2) orbitals in (101)Sn. This observation provides a stringent test of current nuclear structure models. The measured nug(7/2)-nud(5/2) energy splitting is compared with values calculated using mean-field nuclear potentials and is used to calculate low-energy excited states in light Sn isotopes in the framework of the shell model. The correlation technique used in this work offers possibilities for future, more extensive spectroscopy near (100)Sn.
Argonne National Laboratory, Argonne, Illinois 60439, USA.
D
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Seweryniak
M P
MP
Carpenter
S
S
Gros
A A
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Hecht
N
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Hoteling
R V F
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Janssens
T L
TL
Khoo
T
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Lauritsen
C J
CJ
Lister
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Lotay
D
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Peterson
A P
AP
Robinson
W B
WB
Walters
X
X
Wang
P J
PJ
Woods
S
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Zhu