Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Kaoru Taketani"'
Autor:
Shinji Yamashita, Masaaki Kitaguchi, Ryunosuke Kitahara, A. Morishita, Tatsushi Shima, Yoshichika Seki, T. Tomita, Hirohiko M. Shimizu, Kenji Mishima, Naoki Nagakura, Jun Koga, M. Yokohashi, Hirochika Sumino, Hideyuki Oide, Yoshihisa Iwashita, Tatsuhiro Yamada, Tamaki Yoshioka, Naoyuki Sumi, Takashi Ino, Kaoru Taketani, S. Ieki, Katsuya Hirota, Daiichiro Sekiba, Hidetoshi Otono
Publikováno v:
Progress of Theoretical and Experimental Physics. 2019
In a neutron lifetime measurement at the Japan Proton Accelerator Complex, the neutron lifetime is calculated from the neutron decay rate and the incident neutron flux. The flux is obtained by counting the protons emitted from the neutron absorption
Autor:
Hideaki Uehara, Tamaki Yoshioka, Yoshihisa Iwashita, Takashi Ino, Hirochika Sumino, Daiichiro Sekiba, T. Tomita, Kaoru Taketani, Hideyuki Oide, Hirohiko M. Shimizu, Yusuke Nakano, Satoru Yamashita, Yoshichika Seki, Naoki Nagakura, Hidetoshi Otono, Jun Koga, Naoyuki Sumi, Takahito Yamada, Katsuya Hirota, Masaaki Kitaguchi, M. Yokohashi, Ryunosuke Kitahara, A. Morishita, S. Ieki, Hiroki Okabe, Tatsushi Shima, Kenji Mishima
Publikováno v:
EPJ Web of Conferences, Vol 219, p 03003 (2019)
The decay lifetime of free neutrons (∼880 s) is an important parameter of the weak interaction and for Big Bang Nucleosynthesis. However, results of measurements currently show discrepancies depending on the method used. As most experiments nowaday
Autor:
Christopher C. Haddock, T. Tomita, Naotaka Naganawa, T. Shima, S. Imajo, Tamaki Yoshioka, Hirohiko M. Shimizu, Hidetoshi Otono, S. Awano, M. Yokohashi, M. Hirose, Naoyuki Sumi, Masahiro Hino, Takahito Yamada, Yasuhiro Fuwa, Jun Koga, Noriko Oi, Satoru Yamashita, S. Tasaki, Yoshichika Seki, Naoki Nagakura, A. Umemoto, S. Ieki, Kaoru Taketani, Hirochika Sumino, Katsuya Hirota, Kenji Mishima, Takashi Ino, S. Tada, Hiroaki Kawahara, Ryo Katayama, Daiichiro Sekiba, Fumiya Goto, Y. Iwashita, Masaaki Kitaguchi, Ryunosuke Kitahara, A. Morishita, W. M. Snow, Tomofumi Nagae, Hideyuki Oide
"Neutron Optics and Physics (NOP/ BL05)" at MLF in J-PARC is a beamline for studies of fundamental physics. The beamline is divided into three branches so that different experiments can be performed in parallel. These beam branches are being used to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f9b08af5ce05e1e004542ab52a5c4d08
http://arxiv.org/abs/1712.06351
http://arxiv.org/abs/1712.06351
Autor:
A. Morishita, Risa Sakakibara, Masaaki Kitaguchi, T. Tomita, Hidetoshi Otono, Mami Yokohashi, Tatsushi Shima, Naoyuki Sumi, Hirohiko M. Shimizu, Tomoaki Sugino, S. Ieki, Yoshihisa Iwashita, Takashi Ino, Kaoru Taketani, Satoru Yamashita, Katsuya Hirota, Tamaki Yoshioka, Kenji Mishima, Naoki Nagakura, Hirochika Sumino, Hideyuki Oide, Yoshichika Seki, Takahito Yamada, Genki Tanaka, Ryunosuke Kitahara
Publikováno v:
Scopus-Elsevier
The neutron lifetime is one of the basic parameters in the weak interaction, and is used for predicting the light element abundance in the early universe. Our group developed a new setup to measure the lifetime with the goal precision of 0.1% at the
Autor:
K. Shoji, Hirotaka Takahashi, Y. Fukao, Hiroyuki Okada, Hirohiko Sato, Se-Yeon Kim, B. H. Choi, Norio Saito, K. Aoki, T. Hibi, B. D. Park, Tadamitsu Kishimoto, J. S. Song, M. Kurosawa, M. Hayata, K. Imai, T. Hayakawa, J. Asai, S. J. Kim, C. S. Yoon, Tomoko Yoshida, Masaharu Ieiri, Yuji Shimizu, Akira Sato, H. Funahashi, Kiyoshi Tanida, Kaoru Taketani, Akira Ohnishi, K. Miwa, H. Akikawa, I. G. Park, Kazuhiko Yamamoto, C. J. Yoon, J. K. Ahn, Kazuma Nakazawa
Publikováno v:
Journal of the Korean Physical Society. 59:1003-1006
We determined scattering length and effective range of ¥E¥E scattering for the ¥E¥E relative energy (M¥E¥E-2M¥E) from ¥E¥E threshold to 30 MeV/c2. Phase shift of the ¥E¥E wave function which described by scattering length and effective ran
Publikováno v:
Physica B: Condensed Matter. 406:2377-2380
In the present study the restoration of interference fringes, whose visibility is degraded by the presence of a finite crossing angle between the two paths of a neutron interferometer, is experimentally demonstrated. A crossing angle of 1.0 μrad was
Autor:
Hideyuki Oide, Suguru Muto, Hidetoshi Otono, T. Ebisawa, Masahiro Hino, Kenji Mishima, Takayuki Oku, Tatsushi Shima, Takashi Ino, Tamaki Yoshioka, Katsuya Hirota, Kaoru Taketani, Masaaki Kitaguchi, Kenji Sakai, Hirohiko M. Shimizu, Satoru Yamashita
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 634:S134-S137
We report a successful demonstration of a high S/N ratio spin flip chopper (SFC) system for pulsed neutron sources. The system consists of two SFCs and each SFC consists of a radio frequency (RF) flipper and Soller magnetic supermirrors. The aperture
Autor:
Sachio Komamiya, Hirohiko M. Shimizu, S. Kawasaki, Kenji Mishima, Masaaki Kitaguchi, P. Geltenbort, Katsuya Hirota, Suguru Muto, Takahiro Morishima, Yoshihisa Iwashita, Masahiro Hino, Masahiro Ichikawa, Yoshie Otake, Takashi Ino, Hidetoshi Otono, Hiromi Sato, Takenao Shinohara, Masako Yamada, Yoshichika Seki, Yoshio Kamiya, Kaoru Taketani, Tamaki Yoshioka, Takayuki Oku, Jun-ichi Suzuki, Kenji Sakai, Satoru Yamashita, Takanori Sugimoto
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 634:S17-S20
For the future fundamental physics experiments by using cold neutrons, we are developing a device which can measure the neutron polarization degree by accuracy significantly below 10 −3 . A quadrupole magnet is one of the promising candidate to mea
Autor:
S. Imajo, Akihiro Yoshimi, Hirohiko M. Shimizu, Takashi Ino, Yoshihisa Iwashita, Satoru Yamashita, Kaoru Taketani, Koichiro Asahi, Tamaki Yoshioka, Kenji Sakai, Suguru Muto, Tatsushi Shima, Masaaki Kitaguchi, Yoshio Kamiya, Yasushi Arimoto, Kenji Mishima
Publikováno v:
Physics Procedia. 17:20-29
A gradient DC magnet is designed using 3D magnetic field analysis code. This magnet, referred to as a B0 magnet, is one of the key elements of a time-focusing device for ultra-cold neutrons (UCNs) based on a radio frequency gradient flipper – a so-
Autor:
M. Hayata, C. J. Yoon, K. Tanida, Akira Ohnishi, K. Shoji, Kaoru Taketani, T. Hibi, T. Hayakawa, Tomoko Yoshida, Koji Yamamoto, J. S. Song, Kazuma Nakazawa, Hiroyuki Okada, S. J. Kim, K. Aoki, B. D. Park, Tadamitsu Kishimoto, B. H. Choi, H. Akikawa, Hirotaka Takahashi, M. Kurosawa, Hirohiko Sato, Yuji Shimizu, K. Miwa, J. Asai, Norio Saito, C. S. Yoon, Jung Keun Ahn, S. H. Kim, Masaharu Ieiri, I. G. Park, K. Imai, Yoichiro Fukao, Akira Sato, H. Funahashi
Publikováno v:
International Journal of Modern Physics E. 19:2448-2453
We determine ΛΛ scattering parameters from a ΛΛ invariant mass spectrum that was obtained by 12 C (K-, K+ΛΛ) reaction at the KEK Proton Synchrotron. In the framework of Watson's procedure, the obtained scattering length [Formula: see text] and