期刊
PHYSICS LETTERS B
卷 719, 期 4-5, 页码 362-366出版社
ELSEVIER
DOI: 10.1016/j.physletb.2013.01.043
关键词
Isotope shift; Nuclear charge radius; Shape coexistence
资金
- FWO-Vlaanderen (Belgium)
- BOF-KU Leuven [GOA/2004/03]
- IUAP - Belgian State Belgian Science Policy - (BriX network) [P7/12]
- European Research Council [ERC-2011-AdG-291561-HELIOS]
- European Commission within the Sixth Framework Programme through I3-EURONS [RII3-CT-2004-506065]
- U.K. Science and Technology Facilities Council
- FiDiPro programme of the Finnish Academy
- Slovak Research and Development Agency [APVV-0105-10]
- STFC [EP/E004385/1, ST/G008671/1, ST/H008691/2, EP/C015266/1, ST/F012039/1, ST/J000159/1, ST/J004189/1, EP/D002257/1, ST/H008691/1, ST/J000094/1, ST/J000124/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/J004189/1, EP/E004385/1, ST/J000094/1, EP/C015266/1, ST/G008671/1, ST/H008691/1, ST/F012039/1, ST/J000159/1, ST/H008691/2, EP/D002257/1, ST/J000124/1] Funding Source: researchfish
Isotope shifts have been measured for the odd-A polonium isotopes Po191-211 and changes in the nuclear mean square charge radii delta < r(2 >) have been deduced. The measurements were performed at CERN-ISOLDE using the in-source resonance-ionization spectroscopy technique. The combined analysis of these data and our recent results for even-A polonium isotopes indicates an onset of deformation already at Po-197,Po-198, when going away from stability. This is significantly earlier than was suggested by previous theoretical and experimental studies of the polonium isotopes. Moreover and in contrast to the mercury isotopes, where a strong odd-even staggering of the charge radii of the ground states was observed by approaching the neutron mid-shell at N = 104, no such effect is present in polonium down to Po-191. Consequently the charge radii of both isomeric and ground states of the odd-A polonium isotopes follow the same trend as the even-A isotopes. (c) 2013 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据