Systematics of even-a polonium isotopes
- and others
Polonium nuclei, with two valence protons, provide fertile ground for the study of the onset of collectivity: from the textbook two-particle levels of {sup 210}Po to the phonon-like multiplets of {sup 196}Po. In their earlier work the authors described the low-lying structure of even-A Po nuclei down to {sup 196}Po as two protons interacting via a surface-{delta} interaction and adiabatically coupled to a vibrating core. However, this particle-core model (PCM) fails to adequately describe the recently measured level scheme of {sup 194}Po. Also because it assumes a pre-existing vibrational core, this model does not help to understand the single particle contributions to the collective motion. Therefore, the authors have also studied the Po systematics using a more microscopic model: the quasi-particle random phase approximation (QRPA). They will present a phenomenological analysis of the rapidity of the onset of collectivity for the Po isotopes as well as results of both PCM and QRPA calculations. The microscopic nature of the collectivity for the even-A Po isotopes will be discussed.
- OSTI ID:
- 374785
- Report Number(s):
- CONF-9304297--
- Journal Information:
- Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 2 Vol. 40; ISSN 0003-0503; ISSN BAPSA6
- Country of Publication:
- United States
- Language:
- English
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