Development of nuclear transmutation methods for converting LLFP into stable or short-lived nuclides, 8; Neutron capture cross-section measurements of stable Se isotope nuclides as part of the ImPACT Project

Hales, B. P.; Nakamura, Shoji ; Kimura, Atsushi ; Iwamoto, Osamu

We have measured the neutron-capture cross-sections of various Se isotopes ( $^{74,76,77,78,80,82}$ Se) via neutron time-of-flight (nTOF) method, using J-PARC/MLF/ANNRI, up to the incident neutron energy range of 1.5 keV. We are currently considering measuring the long-lived fission product (LLFP) $^{79}$ Se (half-life: 330,000 years), a component of nuclear waste, using J-PARC/MLF/ANNRI. It is thought to be very difficult to remove stable selenium isotopes from our $^{79}$ Se sample. In order to increase the quality of the data in a $^{79}$ Se measurement, data for stable selenium isotopes are necessary. In this presentation, we will presently mainly on our findings in regareds to $^{78}$ .Se

Language	:	Japanese
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Meeting title	:	日本原子力学会2017年秋の大会
Held date	:	2017/09
Location (city)	:	札幌
Location (country)	:	日本
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Keywords	:	ImPACT; 中性子捕獲断面積; ANNRI; Selenium; TOF
Research Facility	:	J-PARC物質・生命科学実験施設
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Article of JAEA R&D Review	:
Cooperating Institute	:	科学技術振興機構

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Registration No. : BB20170395
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