Search

Your search keyword '"Hirokazu Kawamura"' showing total 7 results
Start Over Author "Hirokazu Kawamura" Publisher journal of the physical society of japan
7 results on '"Hirokazu Kawamura"'

1. Fundamental Physics with Cooled Radioactive Atoms

Author

Hirokazu Kawamura, Kenichi Harada, A. Uchiyama, Masatoshi Itoh, Junji Hisano, Yoshiro Takahashi, Takatoshi Aoki, Yasuhiro Sakemi, S. Ito, Atsushi Hatakeyama, and Takeshi Inoue

Subjects
Physics, Fundamental physics, Atomic physics
Published
2021
Full Text
View/download PDF

2. Francium: Tool for Fundamental Symmetry Investigations

Author

A. Uchiyama, Tomohiro Hayamizu, Takahiro Aoki, Kenichi Harada, Hirokazu Kawamura, Takatoshi Aoki, K. Kato, Yasuhiro Sakemi, Atsushi Hatakeyama, Umakanth Dammalapati, Takeshi Inoue, Masatoshi Itoh, Sako Ito, and K. Sakamoto

Subjects
Theoretical physics, Chemistry, chemistry.chemical_element, Atomic physics, Symmetry (physics), Francium
Published
2017
Full Text
View/download PDF

3. Towards the Measurement of the Electric-Dipole Moment of Radioactive Francium using Laser-Cooling and Trapping Techniques

Author

Hirokazu Kawamura, S. Ando, T. Aoki, H. Arikawa, S. Ezure, K. Harada, T. Hayamizu, T. Inoue, T. Ishikawa, M. Itoh, K. Kato, A. Uchiyama, T. Furukawa, A. Hatakeyama, K. Hatanaka, K. Imai, T. Murakami, H. S. Nataraj, T. Sato, Y. Shimizu, T. Wakasa, H. P. Yoshida, and Y. Sakemi

Subjects
Physics, Nuclear physics, Electric dipole moment, chemistry, Laser cooling, chemistry.chemical_element, Trapping, Francium
Published
2015
Full Text
View/download PDF

4. Development of Laser Light Sources for Trapping Radioactive Francium Atoms Toward Tests of Fundamental Symmetries

Author

Kenichi Imai, Masatoshi Itoh, Kenichi Harada, Takatoshi Aoki, Hirokazu Kawamura, T. Murakami, S. Ando, Tomohiro Hayamizu, A. Uchiyama, T. Ishikawa, Tomotsugu Wakasa, Hidetomo Yoshida, S. Ezure, Kichiji Hatanaka, Atsushi Hatakeyama, Takahiro Aoki, K. Kato, Takeshi Inoue, Yasuhiro Shimizu, Yasuhiro Sakemi, H. Arikawa, and Tomoya Sato

Subjects
Physics, Cyclotron, chemistry.chemical_element, Trapping, Polarization (waves), Laser, Rubidium, law.invention, Francium, chemistry, law, Atomic physics, Spectroscopy, Hyperfine structure
Published
2015
Full Text
View/download PDF

5. MTV/MTV-G Experiment at TRIUMF Search of T-Violation and Gravity Signal at Nuclear Scale

Author

K. Ninomiya, Y. Nakaya, J. Onishi, Phil Levy, John A. Behr, Hidetada Baba, R. Tanuma, Mathew Pearson, Reiya Narikawa, Saki Tanaka, J. Murata, Hirokazu Kawamura, Shuntaro Saiba, Y. Totsuka, T. Iguri, and R. Openshaw

Subjects
Physics, Nuclear physics, Gravitation, Thomas precession, Gravitational field, Polarimetry, Polarimeter, Electron, Polarization (waves), Geodetic effect
Abstract

The MTV-G (MTV-Gravity) experiment is aiming to detect a strong gravitational field at around nuclear scale, utilizing an electron polarimeter of the MTV (Mott Polarimetry for T-Violation) experiment [1], which is searching a large T-Violating electron transverse polarization emitted in polarized Li-8 beta decay. The MTV experiment is running at TRIUMF-ISAC since 2009, yielding the highest precision test of T-Violation. The extreme sensitivity of the MTV polarimeter gives us an opportunity to perform a new type of gravity experiment. A modification of gravitational inverse square law at a microscopic scale is predicted by a large extra-dimension model in order to explain the hierarchy problem. The strong gravitational field can be detected as a large spin precession of electrons scattered from nuclei, caused by the “Geodetic precession” as a result of a warped space-time around the nuclear mass. In this experiment, longitudinal polarization of electrons emitted from a 90 Sr source is transferred into a transverse polarization via electromagnetic Thomas precession and possibly via the Geodetic precession.

Published
2014
Full Text
View/download PDF

6. Laser Cooled Francium Factory for the Electron Electric Dipole Moment Search

Author

T. Murakami, S. Ando, S. Ezure, Kichiji Hatanaka, Takahiro Aoki, T. Ishikawa, Tomotsugu Wakasa, Takeshi Furukawa, Kenichi Imai, Masatoshi Itoh, T. Kato, H. S. Nataraj, A. Uchiyama, Tomohiro Hayamizu, Hirokazu Kawamura, Takeshi Inoue, Yasuhiro Shimizu, Atsushi Hatakeyama, Takatoshi Aoki, H. Arikawa, Yasuhiro Sakemi, K. Kato, Hidetomo Yoshida, Kenichi Harada, and Tomoya Sato

Subjects
Nuclear physics, Chemistry, law, chemistry.chemical_element, Factory (object-oriented programming), Atomic physics, Laser, Electron electric dipole moment, law.invention, Francium
Published
2014
Full Text
View/download PDF

7. Report of the Next Generation TRIUMF-MTV Experiment Run-IV Using Cylindrical Drift Chamber

Author

J. Onishi, Shuntaro Saiba, M. Ikeda, M. R. Pearson, J. Murata, Hirokazu Kawamura, Y. Totsuka, R. Tanuma, Reiya Narikawa, Saki Tanaka, E. Seitaibashi, John Behr, T. Iguri, H. Baba, K. Ninomiya, P. Levy, Y. Nakaya, and R. Openshaw

Subjects
Nuclear physics, Physics, Spectrum analyzer, Transverse plane, Scattering, media_common.quotation_subject, Polarimetry, Polarimeter, Electron, Nuclear Experiment, Polarization (waves), Asymmetry, media_common
Abstract

th , 2013) The MTV (Mott polarimetry for T-Violation) experiment is running from 2009 at TRIUMF, which aims to search a large non-standard T-Violation in polarized nuclear beta decay. Existence of a large transverse polarization of electrons emitted from polarized Li-8 nuclei, which are produced at TRIUMF-ISAC and stopped inside an aluminum stopper, is investigated. We utilize a Mott polarimeter consists of a CDC (Cylindrical Drift Chamber), measuring backward scattering left-right asymmetry from a thin lead analyzer foil. In this paper, results from the final performance test run using CDC performed in 2012 are described.

Published
2014
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results