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Journal Articles

Angular distribution of $$gamma$$ rays from a neutron-induced $$p$$-wave resonance of $$^{132}$$Xe

Okudaira, Takuya*; Tani, Yuika*; Endo, Shunsuke; Doskow, J.*; Fujioka, Hiroyuki*; Hirota, Katsuya*; Kameda, Kento*; Kimura, Atsushi; Kitaguchi, Masaaki*; Luxnat, M.*; et al.

Physical Review C, 107(5), p.054602_1 - 054602_7, 2023/05

 Times Cited Count:0 Percentile:70.47(Physics, Nuclear)

no abstracts in English

Journal Articles

Thermally altered subsurface material of asteroid (162173) Ryugu

Kitazato, Kohei*; Milliken, R. E.*; Iwata, Takahiro*; Abe, Masanao*; Otake, Makiko*; Matsuura, Shuji*; Takagi, Yasuhiko*; Nakamura, Tomoki*; Hiroi, Takahiro*; Matsuoka, Moe*; et al.

Nature Astronomy (Internet), 5(3), p.246 - 250, 2021/03

 Times Cited Count:30 Percentile:96.87(Astronomy & Astrophysics)

Here we report observations of Ryugu's subsurface material by the Near-Infrared Spectrometer (NIRS3) on the Hayabusa2 spacecraft. Reflectance spectra of excavated material exhibit a hydroxyl (OH) absorption feature that is slightly stronger and peak-shifted compared with that observed for the surface, indicating that space weathering and/or radiative heating have caused subtle spectral changes in the uppermost surface. However, the strength and shape of the OH feature still suggests that the subsurface material experienced heating above 300 $$^{circ}$$C, similar to the surface. In contrast, thermophysical modeling indicates that radiative heating does not increase the temperature above 200 $$^{circ}$$C at the estimated excavation depth of 1 m, even if the semimajor axis is reduced to 0.344 au. This supports the hypothesis that primary thermal alteration occurred due to radiogenic and/or impact heating on Ryugu's parent body.

Oral presentation

Measurement of polarization dependence for capture cross-section of $$^{117}$$Sn($$overrightarrow{n}$$,$$gamma$$) reaction

Endo, Shunsuke; Abe, Ryota*; Ishizaki, Kohei*; Oku, Takayuki; Okudaira, Takuya*; Kameda, Kento*; Kitaguchi, Masaaki*; Kimura, Atsushi; Sakai, Kenji; Shima, Tatsushi*; et al.

no journal, , 

no abstracts in English

Oral presentation

Measurement of the $$gamma$$-ray angular distribution in $$^{131}$$Xe(n,$$gamma$$)$$^{132}$$Xe* reactions

Okudaira, Takuya*; Abe, Ryota*; Ishizaki, Kohei*; Ito, Yuki*; Endo, Shunsuke; Oku, Takayuki; Kameda, Kento*; Kitaguchi, Masaaki*; Kimura, Atsushi; Sakai, Kenji; et al.

no journal, , 

no abstracts in English

Oral presentation

Angular distribution of $$gamma$$-rays from the neutron capture reaction of Pd isotopes in the eV energy range

Yoshikawa, Hiromoto*; Abe, Ryota*; Ishizaki, Kohei*; Ito, Yuki*; Endo, Shunsuke; Oku, Takayuki; Okudaira, Takuya*; Kameda, Kento*; Kitaguchi, Masaaki*; Kimura, Atsushi; et al.

no journal, , 

no abstracts in English

Oral presentation

Evaluation of resonance parameters of compound nuclear states in the n+$$^{131}$$Xe reaction

Kameda, Kento*; Abe, Ryota*; Ishizaki, Kohei*; Ito, Yuki*; Endo, Shunsuke; Oku, Takayuki; Okudaira, Takuya*; Kitaguchi, Masaaki*; Kimura, Atsushi; Sakai, Kenji; et al.

no journal, , 

no abstracts in English

Oral presentation

Study of epithermal neutron optics for time-reversal violation search experiment with compound nuclei

Fujiie, Takuhiro*; Abe, Ryota*; Ishizaki, Kohei*; Ito, Yuki*; Endo, Shunsuke; Oku, Takayuki; Okudaira, Takuya*; Kameda, Kento*; Kitaguchi, Masaaki*; Kimura, Atsushi; et al.

no journal, , 

no abstracts in English

Oral presentation

Measurement of angular dependent term of $$^{139}$$La(n,$$gamma$$) reaction for polarized neutrons

Abe, Ryota*; Ishizaki, Kohei*; Ito, Yuki*; Endo, Shunsuke; Oku, Takayuki; Okudaira, Takuya*; Kameda, Kento*; Kitaguchi, Masaaki*; Kimura, Atsushi; Sakai, Kenji; et al.

no journal, , 

no abstracts in English

Oral presentation

Present status of time-reversal violation search experiment with compound nuclei

Kitaguchi, Masaaki*; Abe, Ryota*; Ishizaki, Kohei*; Ito, Yuki*; Endo, Shunsuke; Oku, Takayuki; Okudaira, Takuya*; Kameda, Kento*; Kimura, Atsushi; Sakai, Kenji; et al.

no journal, , 

no abstracts in English

Oral presentation

Development of polarimeter for circular polarization measurement of gamma-rays emitted from neutron capture reactions

Endo, Shunsuke; Abe, Ryota*; Ishizaki, Kohei*; Ito, Yuki*; Oku, Takayuki; Okudaira, Takuya*; Omer, M.; Kameda, Kento*; Kitaguchi, Masaaki*; Kimura, Atsushi; et al.

no journal, , 

no abstracts in English

Oral presentation

Measurement of $$sigma_ncdothat{k}_gamma$$ angular dependent term of $$^{139}$$La(n,$$gamma$$)$$^{140}$$La reaction for polarized neutrons

Abe, Ryota*; Ishizaki, Kohei*; Ito, Yuki*; Endo, Shunsuke; Oku, Takayuki; Okudaira, Takuya*; Kameda, Kento*; Kitaguchi, Masaaki*; Kimura, Atsushi; Sakai, Kenji; et al.

no journal, , 

no abstracts in English

Oral presentation

The Angular dependence of the cross section of $$^{115}$$In(n,$$gamma$$) reaction toward a search for time-reversal violation using an indium target

Takada, Shusuke*; Abe, Ryota*; Ishizaki, Kohei*; Ito, Yuki*; Endo, Shunsuke; Oku, Takayuki; Okudaira, Takuya*; Kameda, Kento*; Kitaguchi, Masaaki*; Kimura, Atsushi; et al.

no journal, , 

no abstracts in English

Oral presentation

Plan for the T-violation search using compound nuclei and measurement of the spin-dependent neutron absorption cross section with polarized nuclei

Okudaira, Takuya*; Abe, Ryota*; Ishizaki, Kohei*; Ito, Yuki*; Endo, Shunsuke; Oku, Takayuki; Kameda, Kento*; Kitaguchi, Masaaki*; Kimura, Atsushi; Sakai, Kenji; et al.

no journal, , 

no abstracts in English

Oral presentation

Prompt $$gamma$$-ray measurement from the neutron capture reaction of Pd isotopes in the eV energy range

Yoshikawa, Hiromoto*; Abe, Ryota*; Ishizaki, Kohei*; Ito, Yuki*; Endo, Shunsuke; Oku, Takayuki; Okudaira, Takuya*; Kameda, Kento*; Kitaguchi, Masaaki*; Kimura, Atsushi; et al.

no journal, , 

no abstracts in English

Oral presentation

Measurement of the circular polarization of $$gamma$$-rays from the $$^{139}$$La(n,$$gamma$$)$$^{140}$$La reactions

Endo, Shunsuke; Okudaira, Takuya*; Kameda, Kento*; Kawamura, Shiori*; Kitaguchi, Masaaki*; Kimura, Atsushi; Sakai, Kenji; Shima, Tatsushi*; Shimizu, Hirohiko*; Takada, Shusuke*; et al.

no journal, , 

no abstracts in English

Oral presentation

Current status for the search of time-reversal symmetry violation using compound nuclear reactions

Endo, Shunsuke; Kimura, Atsushi; Shimizu, Hirohiko*; Fujioka, Hiroyuki*; Ide, Ikuo*; Sakai, Kenji; Kameda, Kento*; Kitaguchi, Masaaki*; Iinuma, Masataka*; Kawamura, Shiori*; et al.

no journal, , 

Oral presentation

Measurement of spin-angular correlation terms in neutron induced reactions for search of time-reversal violation

Endo, Shunsuke; Fujioka, Hiroyuki*; Ide, Ikuo*; Iinuma, Masataka*; Ito, Yuki*; Kameda, Kento*; Kawamura, Shiori*; Kimura, Atsushi; Kitaguchi, Masaaki*; Oku, Takayuki; et al.

no journal, , 

no abstracts in English

17 (Records 1-17 displayed on this page)
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