2022 Impact factor 2.7
Hadrons and Nuclei

This article has an erratum: [https://doi.org/10.1007/s100500170017]

Eur. Phys. J. A 11, 277-278 (2001)

${(EC+\beta ^{+})}$ decay of 133Sm and 1.1 s isomer of 133Pr

S.-W. Xu, Y.-X. Xie, X.-D. Wang, Z.-K. Li, B. Guo, C.-G. Leng, C.-F. Wang and Y. Yu

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, PRC


(Received: 22 March 2001 / Revised version: 16 May 2001 Communicated by D. Schwalm)


The very neutron-deficient isotope 133Sm was produced by irradiation of an enriched target of 96Ru with 40Ca and studied by using a helium-jet fast tape transport system in combination with X-$\gamma $ and $\gamma $-$\gamma $ coincidence measurements. A simple ( ${\rm EC} + \beta^{+})$ decay scheme of 133Sm was proposed for the first time. As a by-product 133Pr was produced simultaneously because of the 98-102Ru content of the ruthenium target. The half-life of a 11/2- low-lying isomeric state in 133Pr was measured to be $1.1 \pm 0.2$ s.

23.40.-s - Beta decay; double beta decay; electron and muon capture.
21.10.Tg - Lifetimes.
27.60.+j - $90 \leq A \leq 149$ .

© Società Italiana di Fisica, Springer-Verlag 2001