研究者詳細 - 北口　雅暁

論文 - 北口　雅暁

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Investigation of neutron imaging applications using fine-grained nuclear emulsion 査読有り国際共著国際誌

Muneem, A; Yoshida, J; Ekawa, H; Hino, M; Hirota, K; Ichikawa, G; Kasagi, A; Kitaguchi, M; Muto, N; Mishima, K; Nabi, JU; Nakagawa, M; Naganawa, N; Saito, TR

JOURNAL OF APPLIED PHYSICS 133 巻 ( 5 ) 頁： 054902 - 054902 2023年2月

Displacement-noise-free interferometeric gravitational-wave detector using unidirectional neutrons with four speeds 査読有り国際誌

Iwaguchi, S; Nishizawa, A; Chen, YB; Kawasaki, Y; Ishikawa, T; Kitaguchi, M; Yamagata, Y; Wu, B; Shimizu, R; Umemura, K; Tsuji, K; Shimizu, H; Michimura, Y; Kawamura, S

PHYSICS LETTERS A 458 巻 2023年1月

The LiNA experiment: Development of multi-layered time projection chamber 査読有り

Naoyuki Sumi, Go Ichikawa, Kenji Mishima, Yasuhiro Makida, Masaaki Kitaguchi, So Makise, Shun Matsuzaki, Tomoya Nagano, Masaki Tanida, Hideaki Uehara, Kodai Yano, Hidetoshi Otono, Tamaki Yoshioka

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 2023年1月

Study of Thin Iron Films for Polarization Analysis of Ultracold Neutrons

Hiroaki Akatsuka, Takashi Higuchi, Sean Hansen-Romu, Kichiji Hatanaka, Tomohiro Hayamizu, Masahiro Hino, Go Ichikawa, Sohei Imajo, Blair Jamieson, Shinsuke Kawasaki, Masaaki Kitaguchi, Ryohei Matsumiya, Kenji Mishima

Proceedings of the 24th International Spin Symposium (SPIN2021) 2022年12月

The Precision nEDM Measurement with UltraCold Neutrons at TRIUMF

Ryohei Matsumiya, Hiroaki Akatsuka, Chris P. Bidinosti, Charles A. Davis, Beatrice Franke, Derek Fujimoto, Michael T. W. Gericke, Pietro Giampa, Robert Golub, Sean Hansen-Romu, Kichiji Hatanaka, Tomohiro Hayamizu, Takashi Higuchi, Go Ichikawa, Sohei Imajo, Blair Jamieson, Shinsuke Kawasaki, Masaaki Kitaguchi, Wolfgang Klassen, Emma Klemets, Akira Konaka, Elie Korkmaz, Ekaterina Korobkina, Florian Kuchler, Maedeh Lavvaf, Larry Lee, Thomas Lindner, Kirk W. Madison, Yasuhiro Makida, Russell Mammei, Juliette Mammei, Jeffery W. Martin, Mark McCrea, Eric Miller, Kenji Mishima, Takamasa Momose, Takahiro Okamura, Hooi Jin Ong, Ruediger Picker, William D. Ramsay, Wolfgang Schreyer, Hirohiko M. Shimizu, Steve Sidhu, Shawn Stargardter, Isao Tanihata, Sean Vanbergen, Willem T. H. van Oers, Yutaka Watanabe

Proceedings of the 24th International Spin Symposium (SPIN2021) 2022年12月

Optically Polarized Alkali Metal Cell for Muonic Helium Measurements

Takashi Ino, Seiso Fukumura, Patrick Strasser, Masaki Fujita, Yoichi Ikeda, Sohtaro Kanda, Masaaki Kitaguchi, Shoichiro Nishimura, Takayuki Oku, Takuya Okudaira, Hirohiko M. Shimizu, Koichiro Shimomura

Proceedings of the 24th International Spin Symposium (SPIN2021) 2022年12月

Measurement of the transverse asymmetry of γ rays in the 117Sn(n, γ)118Sn reaction 査読有り国際誌

Endo, S; Okudaira, T; Abe, R; Fujioka, H; Hirota, K; Kimura, A; Kitaguchi, M; Oku, T; Sakai, K; Shima, T; Shimizu, HM; Takada, S; Takahashi, S; Yamamoto, T; Yoshikawa, H; Yoshioka, T

PHYSICAL REVIEW C 106 巻 ( 6 ) 2022年12月

Study on the reusability of fluorescent nuclear track detectors using optical bleaching 査読有り国際誌

Muneem, A; Yoshida, J; Ekawa, H; Hino, M; Hirota, K; Ichikawa, G; Kasagi, A; Kitaguchi, M; Kodaira, S; Mishima, K; Nabi, JU; Nakagawa, M; Sakashita, M; Saito, N; Saito, TR; Wada, S; Yasuda, N

RADIATION MEASUREMENTS 158 巻頁： 106863 - 106863 2022年11月

Displacement-noise-free neutron interferometer for gravitational wave detection using a single Mach-Zehnder configuration 査読有り国際誌

Iwaguchi, S; Nishizawa, A; Chen, YB; Kawasaki, Y; Kitaguchi, M; Morimoto, T; Ishikawa, T; Wu, B; Watanabe, I; Shimizu, R; Shimizu, H; Michimura, Y; Kawamura, S

PHYSICS LETTERS A 441 巻 2022年7月

A novel nuclear emulsion detector for measurement of quantum states of ultracold neutrons in the Earth's gravitational field 査読有り国際共著国際誌

Muto, N; Abele, H; Ariga, T; Bosina, J; Hino, M; Hirota, K; Ichikawa, G; Jenke, T; Kawahara, H; Kawasaki, S; Kitaguchi, M; Micko, J; Mishima, K; Naganawa, N; Nakamura, M; Roccia, S; Sato, O; Sedmik, RIP; Seki, Y; Shimizu, HM; Tada, S; Umemoto, A

JOURNAL OF INSTRUMENTATION 17 巻 ( 7 ) 頁： P07014 - P07014 2022年7月

Neutron displacement noise-free interferometer for gravitational-wave detection 査読有り国際誌

Nishizawa, A; Iwaguchi, S; Chen, YB; Morimoto, T; Ishikawa, T; Wu, B; Watanabe, I; Kawasaki, Y; Shimizu, R; Shimizu, H; Kitaguchi, M; Michimura, Y; Kawamura, S

PHYSICAL REVIEW D 105 巻 ( 12 ) 2022年6月

Angular distribution of γ rays from the p-wave resonance of 118Sn 査読有り国際共著国際誌

Koga, J; Takada, S; Endo, S; Fujioka, H; Hirota, K; Ishizaki, K; Kimura, A; Kitaguchi, M; Niinomi, Y; Okudaira, T; Sakai, K; Shima, T; Shimizu, HM; Tani, Y; Yamamoto, T; Yoshikawa, H; Yoshioka, T

PHYSICAL REVIEW C 105 巻 ( 5 ) 2022年5月

Proposal for new measurements of muonic helium hyperfine structure at J-PARC

Seiso Fukumura, Patrick Strasser, Takashi Ino, Takayuki Oku, Takuya Okudaira, Sohtaro Kanda, Masaaki Kitaguchi, Koichiro Shimomura, Hirohiko M. Shimizu, Hiroyuki A. Torii, Shoichiro Nishimura

EPJ Web of Conferences 262 巻頁： 01012 - 01012 2022年4月

掲載種別：研究論文（学術雑誌）出版者・発行元：EDP Sciences

The measurement of the ground state hyperfine structure of muonic helium has the potential to improve the precision of the mass of the negative muon by a factor of 50 or more. The mass of the negative muon is very important because it enables us to test the CPT theorem by comparison with positive muon mass. We aim to measure the hyperfine structure of muonic helium with a precision 1000 times higher than previous experiments [1,2] using the highintensity muon beam at J-PARC and have already obtained results better than the current precision in zero-field measurements in a test experiment in March 2021. To further improve the precision, we plan to measure in a high magnetic field and incorporate a technique that can produce highly polarized muonic helium atom [3]. In this paper, we will report on these developments.

DOI： 10.1051/epjconf/202226201012

Improvement of systematic uncertainties for the neutron lifetime experiment at J-PARC

Takanori Mogi, Takuro Hasegawa, Katsuya Hirota, Go Ichikawa, Sei Ieki, Takashi Ino, Yoshihisa Iwashita, Shogo Kajiwara, Yu Kato, Masaaki Kitaguchi, Ryunosuke Kitahara, Jun Koga, So Makise, Shun Matsuzaki, Kenji Mishima, Koki Morikawa, Naoki NAGAKURA, Hiroki Okabe, Hidetoshi Otono, Yoshichika Seki, Daiichiro Sekiba, Tatsushi Shima, Haruki Shimizu, Hirohiko M. Shimizu, Yuki Sugisawa, Naoyuki Sumi, Hirochika Sumino, Tomohiko Tanabe, Tatsuhiko TOMITA, Hideaki Uehara, Takahito Yamada, Satoru Yamashita, Kodai Yano, Tamaki Yoshioka

Proceedings of Particles and Nuclei International Conference 2021 — PoS(PANIC2021) 2022年3月

Neutron lifetime experiment with pulsed cold neutrons at J-PARC

Go Ichikawa, Yasuhiro Fuwa, Takuro Hasegawa, Masahiro Hino, Katsuya Hirota, Takashi Ino, Yoshihisa Iwashita, Masaaki Kitaguchi, Jun Koga, Shun Matsuzaki, Kenji Mishima, Takanori Mogi, Koki Morikawa, Hiroki Okabe, Hidetoshi Otono, Yoshichika Seki, Daiichiro Sekiba, Tatsushi Shima, Haruki Shimizu, Hirohiko M. Shimizu, Naoyuki Sumi, Hirochika Sumino, Satoru Yamashita, Kodai Yano, Tamaki Yoshioka

Proceedings of Particles and Nuclei International Conference 2021 — PoS(PANIC2021) 2022年3月

Erratum: Transverse asymmetry of γ rays from neutron-induced compound states of 140La (Physical Review C (2020) 101 (064624) DOI: 10.1103/PhysRevC.101.064624) 査読有り国際共著国際誌

T. Yamamoto, T. Okudaira, S. Endo, H. Fujioka, K. Hirota, T. Ino, K. Ishizaki, A. Kimura, M. Kitaguchi, J. Koga, S. Makise, Y. Niinomi, T. Oku, K. Sakai, T. Shima, H. M. Shimizu, S. Takada, Y. Tani, H. Yoshikawa, T. Yoshioka

Physical Review C 105 巻 ( 3 ) 2022年3月

記述言語：英語掲載種別：研究論文（学術雑誌）

We correct the sign of thetraverse asymmetry ALR in our previous paper The transverse asymmetry is derived from the correlation term snk? , where sn and k? are polarization of incident neutrons and momentum of emitted ? rays, respectively. The neutron polarization direction was determined using two measurements: (1) the measurement of the polarization direction of the circularly polarized laser which is used to polarize the 3He nuclei of the neutron polarizer, and (2) the measurement of the neutron polarization direction as it passes through the 3He neutron polarizer using a magnetic supermirror. However, in (1), the relation between the direction of the circular polarization and the spin of photons was misevaluated. Additionally, in (2), the relation between the neutron polarization direction reflected by the magnetic supermirror and the magnetic field applied to the magnetic supermirror was also misevaluated. Upon reevaluation we have deduced that the neutron polarization direction during the experiment was opposite to what was previously reported, and, hence, the sign of ALR should be reversed. As supporting evidence, the direction of the circular polarization of our laser system was obtained by measuring the electric paramagnetic resonance signal of Rb during laser pumping. The neutron polarization direction was also determined from the measurement of the parity violation at the 0.74-eV p-wave resonance of 139 La + n using our 3He neutron polarizer. These results also support that the neutron polarization direction was opposite to what was previously reported. Consequently, the transverse asymmetries for ? rays emitted in the transition from the 0.74-eV p-wave resonance to the ground state and inclusive ? rays are newly obtained as Agnd LR = - 0.60 ± 0.19 and Ainc LR = - 0.0045 ± 0.0080 , respectively. Similarly, Figs. 9, 11, 13, and 15 in the original paper should be replaced as Figs. 9, 11, 13, and 15 in this Erratum, respectively. The corrections do not affect results and conclusions of the original article. (Figure Presented).

DOI： 10.1103/PhysRevC.105.039901

Scopus

Measurement of nuclear spin relaxation time in lanthanum aluminate for development of polarized lanthanum target 査読有り国際誌

Ishizaki, K; Hotta, H; Ide, I; Iinuma, M; Iwata, T; Kitaguchi, M; Kohri, H; Miura, D; Miyachi, Y; Ohta, T; Shimizu, HM; Yoshikawa, H; Yosoi, M

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 1020 巻 2021年12月

Pendellosung interferometry probes the neutron charge radius, lattice dynamics, and fifth forces 査読有り国際共著国際誌

Heacock, B; Fujiie, T; Haun, RW; Henins, A; Hirota, K; Hosobata, T; Huber, MG; Kitaguchi, M; Pushin, DA; Shimizu, H; Takeda, M; Valdillez, R; Yamagata, Y; Young, AR

SCIENCE 373 巻 ( 6560 ) 頁： 1239 - + 2021年9月

Energy-dependent angular distribution of individual γ rays in the 139La(n, γ) 140La* reaction 査読有り国際共著国際誌

Okudaira, T; Endo, S; Fujioka, H; Hirota, K; Ishizaki, K; Kimura, A; Kitaguchi, M; Koga, J; Niinomi, Y; Sakai, K; Shima, T; Shimizu, HM; Takada, S; Tani, Y; Yamamoto, T; Yoshikawa, H; Yoshioka, T

PHYSICAL REVIEW C 104 巻 ( 1 ) 2021年7月

New high-sensitivity searches for neutrons converting into antineutrons and/or sterile neutrons at the HIBEAM/NNBAR experiment at the European Spallation Source 査読有り国際共著国際誌

Addazi, A; Anderson, K; Ansell, S; Babu, KS; Barrow, JL; Baxter, DV; Bentley, PM; Berezhiani, Z; Bevilacqua, R; Biondi, R; Bohm, C; Brooijmans, G; Broussard, LJ; Cedercäll, J; Crawford, C; Dev, PSB; DiJulio, DD; Dolgov, AD; Dunne, K; Fierlinger, P; Fitzsimmons, MR; Fomin, A; Frost, MJ; Gardiner, S; Gardner, S; Galindo-Uribarri, A; Geltenbort, P; Girmohanta, S; Golubev, P; Golubeva, E; Greene, GL; Greenshaw, T; Gudkov, V; Hall-Wilton, R; Heilbronn, L; Herrero-Garcia, J; Holley, A; Ichikawa, G; Ito, TM; Iverson, E; Johansson, T; Jönsson, L; Jwa, YJ; Kamyshkov, Y; Kanaki, K; Kearns, E; Kokai, Z; Kerbikov, B; Kitaguchi, M; Kittelmann, T; Klinkby, E; Kobakhidze, A; Koerner, LW; Kopeliovich, B; Kozela, A; Kudryavtsev, V; Kupsc, A; Lee, YT; Lindroos, M; Makkinje, J; Marquez, JI; Meirose, B; Miller, TM; Milstead, D; Mohapatra, RN; Morishima, T; Muhrer, G; Mumm, HP; Nagamoto, K; Nepomuceno, A; Nesti, F; Nesvizhevsky, VV; Nilsson, T; Oskarsson, A; Paryev, E; Pattie, RW; Penttil, S; Perrey, H; Pokotilovski, YN; Potashnikovav, I; Ramic, K; Redding, C; Richard, JM; Ries, D; Rinaldi, E; Rizzi, N; Rossi, N; Ruggles, A; Rybolt, B; Santoro, V; Sarkar, U; Saunders, A; Senjanovic, G; Serebrov, AP; Shimizu, HM; Shrock, R; Silverstein, S; Silvermyr, D; Snow, WM; Takibayev, A; Tkachev, I; Townsend, L; Tureanu, A; Varriano, L; Vainshtein, A; de Vries, J; Wagner, R; Woracek, R; Yamagata, Y; Yiu, S; Young, AR; Zanini, L; Zhang, Z; Zimmer, O

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS 48 巻 ( 7 ) 頁： 070501 - 070501 2021年7月

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