Systematical behavior of even-A polonium isotopes
Mar, 19978 pages
Published in:
- Phys.Rev.C 55 (1997) 1218-1226
Citations per year
Abstract: (APS)
The energy systematics of even-A, neutron-deficient polonium isotopes have been previously observed down to A=194. The low-lying states display a gradual approach to the equal spacings of a harmonic vibrator, exceeding this limit for the first time in 194Po. We have successfully modeled these energy systematics using the particle-core model and have applied the quasiparticle random phase approximation to extract microscopic wave functions for the collective 21+ states and predict B(E2;21+→01+) values. We are able to explain the Po trends in terms of the overlaps of the wave functions of valence particles, overlaps which are enhanced when particles occupy the high-j proton 1h9/2 and neutron 1i13/2 orbitals. We find little evidence for particle-hole excitations across the Z=82 shell gap.- 21.60.Cs
- 21.60.Ev
- 27.80.+w
- 21.60.Jz
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