Prompt $$gamma$$ rays emitted from the neutron capture reaction of $$^{74}$$Ge
原 かおる; 金 政浩; 大島 真澄; 中村 詔司; 木村 敦; 小泉 光生; 藤 暢輔
Hara, Kaoru; Kin, Tadahiro; Oshima, Masumi; Nakamura, Shoji; Kimura, Atsushi; Koizumi, Mitsuo; Toh, Yosuke
We studied a decay scheme in the $$^{74}$$Ge($$n$$,$$gamma$$)$$^{75}$$Ge reaction. It is essential information for accurate determination of the neutron capture cross section of $$^{74}$$Ge with the prompt $$gamma$$-ray detection method, when the cross section is derived by summing all the intensities of ground-state or primary transitions. However, the decay from/to $$^{75}$$Ge-state above 2 MeV is unknown, where the neutron separation energy is 6.5 MeV. The $$gamma$$-$$gamma$$ coincidence experiments were performed at the cold neutron beam line of the Japan Research Reactor of JAEA. The multiple prompt $$gamma$$-rays emitted from the $$^{74}$$Ge($$n$$,$$gamma$$)$$^{75}$$Ge reaction were measured by using a $$gamma$$-ray spectrometer (STELLA) which consists of eight clover-type Ge detectors and BGO Compton-suppressors. Many unknown $$gamma$$-ray transitions, in addition to the known one, were seen in the energy spectrum. The new levels and the new transition $$gamma$$-rays in $$^{75}$$Ge are reported.
使用言語 : English
掲載資料名 : Journal of the Korean Physical Society
: 59
: 2
ページ数 : p.1832 - 1835
発行年月 : 2011/08
出版社名 : Springer
発表会議名 : International Conference on Nuclear Data for Science and Technology (ND 2010)
開催年月 : 2010/04
開催都市 : Jeju
開催国 : Korea
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キーワード : no keyword
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登録番号 : BB20100213
抄録集掲載番号 : 39001267
論文投稿番号 : 9532
Accesses  (From Jun. 2, 2014)
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分野:Physics, Multidisciplinary
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