Emission probability measurement of principal γ-rays of 147Eu

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

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3 Citations (Scopus)


The γ-ray emission probabilities for the decay of 147Eu by electron capture or β+-particle emission were evaluated by der Mateosian and Peker (Nucl. Data Sheets 66 (1992) 705), but those had large uncertainties of about 4%. In this work precise γ-ray emission probabilities of 147Eu are based on source disintegration rates measured using a 4πβ-γ coincidence apparatus with a live-timed two-dimensional data-acquisition system. The emission probabilities of the 121.2, 197.3, 601.5, 677.5 and 1077.0keV γ-rays were determined to be 0.2061±0.0019, 0.2398±0.0022, 0.0589±0.0005, 0.1003±0.0010 and 0.0637±0.0006, respectively, from the absolute γ-ray emission rates and the disintegration rates.

Original languageEnglish
Pages (from-to)96-101
Number of pages6
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number1-2
Publication statusPublished - May 1 2004
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation


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