Surface physicochemical properties and decay of the low-lying isomer in the {sup 229}Th nucleus

Journal Article · Tue May 01 04:00:00 EDT 2018 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QEL16661· OSTI ID:23000278

Borisyuk, P. V.; Kurel’chuk, U. N.; Vasil’ev, O. S.; Troyan, V. I.; Lebedinskii, Yu. Yu.; Tkalya, E. V.

The effect of the {sup 229}Th nucleus proximity to the CsI surface on the decay probability of its anomalously low lying isomeric level is studied. Results of experimental and theoretical studies show that the CsI surface does not produce chemical bonding with Th and does not noticeably change its valence shells. Hence, it is an optimal substrate for measuring the probability of the {sup 229}Th isomer state decay via internal electron conversion. The half-life of the {sup 229}Th{sup m} isomer in the thorium atom is calculated for neutral chemical environment. (paper)

• OSTI ID: 23000278
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 5 Vol. 48; ISSN 1063-7818; ISSN QUELEZ
• Country of Publication: United States
• Language: English

Related Subjects

07 ISOTOPE AND RADIATION SOURCES
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATOMS
CHEMICAL BONDS
CONVERSION
DECAY
ELECTRONS
ENVIRONMENT
HALF-LIFE
ISOMERS
PROBABILITY
SHELLS
SUBSTRATES
THORIUM
THORIUM 229
VALENCE