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Journal Articles

Measurement of the neutron capture cross-section of $$^{133}$$Cs as a part of the ImPACT project

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

JAEA-Conf 2017-001, p.199 - 203, 2018/01

https://doi.org/10.11484/jaea-conf-2017-001

Journal Articles

M$"o$ssbauer isomer shifts of $$^{133}$$Cs-impurity atoms implanted into metallic matrices

Muramatsu, Hisakazu*; Yoshikawa, K.*; ; ; Miura, Taichi*; Watanabe, Satoshi; Koizumi, Mitsuo; Osa, Akihiko; Sekine, Toshiaki

JAERI-Review 99-025, TIARA Annual Report 1998, p.211 - 213, 1999/10

https://jopss.jaea.go.jp/pdfdata/JAERI-Review-99-025.pdf

no abstracts in English

Oral presentation

Research on neutron capture cross-sections of Cs isotopes in ImPACT project, 2; Measurement of the neutron capture cross-section of $$^{133}$$Cs

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

no journal, , 

no abstracts in English

Oral presentation

Measurement of the neutron-capture cross-section of $$^{133}$$Cs using ANNRI in the MLF at J-PARC

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

no journal, , 

As part of the ImPACT project, it is currently planned to measure the neutron cross-section of $$^{135}$$Cs (half-life $$2.3 times 10^6$$ y), a long-lived fission product (LLFP), via neutron time-of-flight (TOF) method using ANNRI in the Material and Life science Facility (MLF) at the Japan Proton Accelerator Research Complex (J-PARC). $$^{133}$$Cs (natural Cs, stable) exists as a contaminant in the $$^{135}$$Cs sample. To make an accurate measurement of $$^{135}$$Cs, accurate data of the $$^{133}$$Cs cross-section is required. We have measured the neutron cross-section in the thermal and epithermal energy regions. We will report on the measured cross-section data, resonances, and our methodology.

Oral presentation

Measurements of the $$(n,gamma)$$ cross-section of long-lived fission products as part of the ImPACT Project

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

no journal, , 

Oral presentation

A High-precision measurement of the $$^{133}$$Cs neutron-capture cross-section as part of the ImPACT project

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

no journal, , 

There is currently a plan to measure the neutron-capture cross-section of $$^{135}$$Cs (half-life 2.3 million years), using the neutron beam at the Materials and Life science Facility (MLF) at J-PARC. In the course of measuring $$^{135}$$Cs, it is unavoidable that $$^{133}$$Cs (stable) will be an impurity within the sample. In order to derive high-quality $$^{135}$$Cs data, it is necessary to also measure $$^{133}$$Cs. We have measured the neutron-capture cross-section of $$^{133}$$Cs using ANNRI at the MLF at J-PARC, in the energy region from thermal to 1.5 keV, via the time-of-flight method. This measurement has better statistics and covers a wider energy range than previous measurements of $$^{133}$$Cs. Additionally, we have confirmed the misassignment of various resonances from previous experiments.

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