학술논문
Spectroscopy of the long-lived excited state in the neutron-deficient nuclides 195,197,199 Po by precision mass measurements.
Document Type
Article
Author
Source
Subject
*SPECTROMETRY
*POLONIUM
*NEUTRONS
*
*
Language
ISSN
2469-9985
Abstract
Direct mass measurements of the low-spin 3/2- and high-spin 13/2+ states in the neutron-deficient isotopes 195Po and 197Po were performed with the Penning-trap mass spectrometer ISOLTRAP at ISOLDE-CERN. These measurements allow the determination of the excitation energy of the isomeric state arising from the νi13/2 orbital in 195,197Po. Additionally, the excitation energy of isomeric states of lead, radon, and radium isotopes in this region were obtained from α-decay chains. These excitation energies complete the knowledge of the energy systematics in the region and confirm that the 13/2+ states remain isomeric, independent of the number of valence neutrons. [ABSTRACT FROM AUTHOR]