Výsledky vyhledávání - "Ishizaki, Kohei"

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Combination of crystal growth with optical floating zone and evaluation of Nd3+:LaAlO3 crystals with the dynamic nuclear polarization of 139La and 27Al

Autor: Ishizaki, Kohei, Ide, Ikuo, Fujita, Masaki, Hotta, Hiroki, Ito, Yuki, Iinuma, Masataka, Ikeda, Yoichi, Iwata, Takahiro, Kitaguchi, Masaaki, Kohri, Hideki, Matsushita, Taku, Miura, Daisuke, Miyachi, Yoshiyuki, Shimizu, Hirohiko M., Yosoi, Masaru

Producing a polarized lanthanum (La) target with high polarization and long relaxation time is crucial for realizing time-reversal violation experiments using polarized neutron beams. We use a LaAlO3 crystal doped with a small amount of Nd3+ ions for

Externí odkaz: http://arxiv.org/abs/2402.07378

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Measurement of the angular distribution of γ-rays emitted from the compound state after neutron capture by 81Br for a search of T-violation

Autor: Endo Shunsuke, Shimizu Hirohiko M., Kitaguchi Masaaki, Katsuya Hirota, Yamamoto Tomoki, Ishizaki Kohei, Sato Takumi, Yoshioka Tamaki, Takada Shusuke, Koga Jun, Okudaira Takuya, Sakai Kenji, Kimura Atsushi, Haddock Christopher C.

Publikováno v: EPJ Web of Conferences, Vol 219, p 09003 (2019)

It is known that parity violation can be enhanced in compound nuclei due to mixing of s- and p-waves, and it is suggested that time reversal invariance (T) violation is enhanced by the same mechanism. We are planing a T-violation search using compoun

Externí odkaz: https://doaj.org/article/00891ce5239a4c179b4e3305eccd8562

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Measurement of the angular distribution of prompt gamma-rays emitted in the 117Sn(n, γ) reaction for a T-violation search

Autor: Koga Jun, Takada Shusuke, Yoshioka Tamaki, Shimizu Hirohiko M., Hirota Katsuya, Oi Norio, Yamamoto Tomoki, Ito Ikuya, Ishizaki Kohei, Endo Shunsuke, Sato Takumi, Kitaguchi Masaaki, Haddock Christopher C., Okudaira Takuya, Sakai Kenji, Kimura Atsushi

Publikováno v: EPJ Web of Conferences, Vol 219, p 09004 (2019)

It is theoretically suggested that the violation of charge conjugation and parity symmetry (CP-violation) could be enhanced in several compound nuclear reactions. According to the CPT theorem the violation of time-reversal symmetry (T-violation) woul

Externí odkaz: https://doaj.org/article/bff64472f9f6459f9ed0b534f162e9b6

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Measurement of P-Violation in 139La(n,γ)140La – a first step towards a T-Violation search

Publikováno v: EPJ Web of Conferences, Vol 219, p 09002 (2019)

We performed a polarized neutron transmission asymmetry measurement utilizing the 139La(n,γ)140La reaction. This measurement involved the use of a recently developed 3He spin filter mounted on the J-PARC MLF beam line number 4 (BL04). The resulting

Externí odkaz: https://doaj.org/article/372b1d1e824e4305b1c2e579f63925d3

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Akademický článek

Measurement of the angular distribution of γ-rays after neutron capture by 139La for a T-violation search

Publikováno v: EPJ Web of Conferences, Vol 219, p 09001 (2019)

Parity violating effects enhanced by up to 106 times compared to proton-proton scattering have been observed in several neutron capture induced compound nuclei. This enhancement is explained as an interference between an s-wave and a p-wave amplitude

Externí odkaz: https://doaj.org/article/dccf8e7dc0834a9bb074280b740c2a86

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