Excited $0^+$ states in neutron-rich Zr and Mo isotopes

The low lying 0/sub 2//sup +/ levels in even nuclei in the transitional region around mass 100 have been investigated by means of the fission product separator JOSEF. An excited 0/sup +/ state at 331 keV has been discovered in the nucleus /sup 100/Zr. Electron lines of energies 313, 675, 715, 836 an...

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Detalles Bibliográficos
Autores principales: Khan, T A, Lauppe, W D, Lawin, H, Sadler, G, Selic, H A, Sistemich, K
Lenguaje:eng
Publicado: CERN 1976
Materias:
Nuclear Physics
Acceso en línea:https://dx.doi.org/10.5170/CERN-1976-013.488
http://cds.cern.ch/record/873879
Descripción
Sumario:The low lying 0/sub 2//sup +/ levels in even nuclei in the transitional region around mass 100 have been investigated by means of the fission product separator JOSEF. An excited 0/sup +/ state at 331 keV has been discovered in the nucleus /sup 100/Zr. Electron lines of energies 313, 675, 715, 836 and 1576 keV have been observed in singles and X/e/sup -/ coincidence spectra. The EO character of these transitions and their assignment to specific nuclides has been unambiguously established. From delayed gamma /e/sup -/ coincidences a lifetime of 78+or-10 nsec for the 0/sub 2//sup +/ state in /sup 98/Zr has been measured. Using the empirical correlation between the EO strength parameter and the quadrupole deformation, a value of beta /sub 2/ approximately 0.12 is suggested for /sup 98/Zr. In the light of the present results a decay scheme is proposed for /sup 100/Zr and its implications discussed.

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