학술논문
Preparing a journey to the east of 208 Pb with ISOLTRAP: Isobaric purification at A = 209 and new masses for 211-213 Fr and 211 Ra.
Document Type
Article
Author
Source
Subject
*ISOBARIC spin
*MASS spectrometers
*NEUTRONS
*PARTICLES (Nuclear physics)
*NUCLEAR physics
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Language
ISSN
1434-6001
Abstract
With the Penning trap mass spectrometer ISOLTRAP, located at ISOLDE/CERN, preparatory work has been performed towards mass and decay studies on neutron-rich Hg and Tl isotopes beyond N = 126 . The properties of these isotopes are not well known because of large isobaric contamination coming mainly from surface-ionised Fr. Within the studies, production tests using several target-ion source combinations were performed. It was furthermore demonstrated around mass number A = 209 that the resolving power required to purify Fr is achievable with ISOLTRAP. In addition, masses of several isobaric contaminants, 211-213Fr and 211Ra , were determined with a three-fold improved precision. The results influence masses of more than 20 other nuclides in the 208Pb region. [ABSTRACT FROM AUTHOR]