Gamma-ray emission probability measurement of149Eu

Hiroshi Miyahara, Keiji Katoh, Keiichi Ikeda, Kazuo Fujiki, Ichirou Nishinaka, Kazuaki Tsukada, Yuichiro Nagame, Masato Asai, Sin Ichi Ichikawa, Hiromitsu Haba

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


The γ-ray emission probability of 149Eu was determined from the measurements of disintegration rates and γ-ray spectra of sources using a 4πβ-γ coincidence apparatus with a live-timed two-dimensional data-acquisition system. The determined emission probabilities of the 277.1 and 327.5keV γ-rays were 0.0413±0.0003 and 0.0475±0.0003, respectively. These results meant that the evaluated values were underestimated by about 15%. Finally, new values of the decay parameters were deduced from them.

Original languageEnglish
Pages (from-to)404-408
Number of pages5
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number3
Publication statusPublished - Nov 11 2004
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation


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