Abstract
The properties of the triplet of low-lying states in101Mo have been studied through spectroscopy of theγ radiation following thermal neutron capture in100Mo and β− decay of101Nb and through a measurement of the proton angular distributions in the100Mo(d,p) reaction with 14 MeV deuteron energy. The half-lives of the 13.5 keV state and the 57.0 keV 5/2+ state have been measured as 226(7) and 133(7)ns, respectively. These values and the quadrupole/dipole mixing ratios of the 13.5 keV and 43.5 keV transitions yield spin and parity 3/2+ for the 13.5 keV level. The E2 components in the 13.5 (3/2+ →1/2+) and 43.5 keV (5/2+→3/2+) transitions are ≦ 8·10−4 and 54(9)%, respectively. The possibility of an additional state near to the 57.0 keV level is discussed. IBFM/PTQM calculations, taking into consideration the transitional character of the100Mo boson core, account for the electromagnetic-transition and transfer-reaction pattern of the triplet of states.
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Alexander von Humboldt fellow 1987/1988, on leave of absence from University of Zagreb, YU-41000 Zagreb, Croatia, Yugoslavia
The co-authors deplore the early and unexpected death of Norbert Kaffrell
Supported by Internationales Büro, Forschungszentrum Jülich
The authors gratefully acknowledge the help of several colleagues in the operation of the different experiments and especially that by Dr. H.J. Scheerer in operating the Munich MP tandem.
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Seyfarth, H., Güven, H.H., Kardon, B. et al. Structure of the Triplet of low-lying states in101Mo. Z. Physik A - Hadrons and Nuclei 339, 269–278 (1991). https://doi.org/10.1007/BF01284064
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DOI: https://doi.org/10.1007/BF01284064