Half-lives of isomeric levels of Ag-107m, Ag-109m and Rh-103m photoactivated by Co-60 gamma-ray irradiation

Authors
Yoshida, E Kobayashi, T Kojima, Y Shizuma, K
Citation
E. Yoshida et al., Half-lives of isomeric levels of Ag-107m, Ag-109m and Rh-103m photoactivated by Co-60 gamma-ray irradiation, NUCL INST A, 449(1-2), 2000, pp. 217-220
Citations number
18
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
ISSN journal
01689002 → ACNP
Volume
449
Issue
1-2
Year of publication
2000
Pages
217 - 220
Database
ISI
SICI code
0168-9002(20000711)449:1-2<217:HOILOA>2.0.ZU;2-6
Abstract
Photoactivation by gamma-rays from Co-60 Of 10 kCi has been performed for i somers of Ag-107m, Ag-109m and Rh-103m and half-lives of these isomers were determined. Gamma-rays emitted from Ag-107m and Ag-109m were measured with a low-background Ge detector and internal conversion electrons from Rh-103 m were measured with a 2 pi gas flow counter. The half-lives obtained are: Ag-107m: 44.5 +/- 0.8 s, Ag-109m: 38.0 +/- 1.2 s and Rh-103m: 54.8 +/- 3.8 min. The results are in agreement with previous values obtained by differen t excitation methods. (C) 2000 Elsevier Science B.V. All rights reserved.