研究者詳細 - 吉見　彰洋

論文 - 吉見　彰洋

分割表示 148 件中 21 - 40 件目／全件表示 >>

Fast x-ray detector system with simultaneous measurement of timing and energy for a single photon 査読

T. Masuda, S. Okubo, H. Hara, T. Hiraki, S. Kitao, Y. Miyamoto, K. Okai, R. Ozaki, N. Sasao, M. Seto, S. Uetake, A. Yamaguchi, Y. Yoda, A. Yoshimi, K. Yoshimura

REVIEW OF SCIENTIFIC INSTRUMENTS 88 ( 6 ) 063105 2017年6月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：AMER INST PHYSICS

We developed a fast X-ray detector system for nuclear resonant scattering (NRS) experiments. Our system employs silicon avalanche photo-diode (Si-APD) as a fast X-ray sensor. The system is able to acquire both timing and energy of a single X-ray photon simultaneously in a high rate condition, 106 counts per second for one Si-APD. The performance of the system was investigated in SPring-8, a synchrotron radiation facility in Japan. Good time resolution of 120 ps (FWHM) was achieved with a slight tail distribution in the time spectrum by a level of 10(-9) at 1 ns apart from the peak. Using this system, we successfully observed the NRS from the 26.27-keV level of mercury-201, which has a half-life of 630(50) ps. We also demonstrated the reduction of background events caused by radioactive decays in a radioactive sample by discriminating photon energy. Published by AIP Publishing.

DOI： 10.1063/1.4989405

Web of Science

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Development Of 131Xe Co-magnetometry For Xe Atomic EDM Search

Tomoya Sato, Yuichi Ichikawa, Shuichiro Kojima, Chikako Funayama, Shunya Tanaka, Yu Sakamoto, Yuichi Ohtomo, Chika Hirao, Masatoshi Chikamori, Eri Hikota, Takeshi Furukawa, Akihiro Yoshimi, Christopher Paul Bidinosti, Takashi Ino, Hideki Ueno, Yukari Matsuo, Takeshi Fukuyama, Koichiro Asahi

Proceedings of The 26th International Nuclear Physics Conference — PoS(INPC2016) 2017年5月

Vibrational Two-Photon Emission from Coherently Excited Solid Parahydrogen 査読

Yuki Miyamoto, Hideaki Hara, Takahiko Masuda, Noboru Sasao, Satoshi Uetake, Akihiro Yoshimi, Koji Yoshimura, Motohiko Yoshimura

JOURNAL OF PHYSICAL CHEMISTRY A 121 ( 20 ) 3943 - 3951 2017年5月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：AMER CHEMICAL SOC

We report the observation of two-photon emission from a coherently excited vibrational state of solid parahydrogen, which is also a known quantum solid. Coherence between the ground and the excited states is prepared by stimulated Raman scattering using two visible laser pulses. The two-photon emission is triggered by another mid-infrared laser pulse. It was observed that the two-photon emission persists even when the trigger pulse is injected long after the excitation. This is due to the long decoherence time of the vibrational states of solid parahydrogen. It is found that the emission intensity increases even after the excitation pulses pass through the target completely. This coherence development is highly suppressed at high target temperatures and high residual orthohydrogen concentrations. Effects of target annealing and laser-induced damage on the target are also observed.

DOI： 10.1021/acs.jpca.7b02011

Web of Science

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High-precision quadrupole moment reveals significant intruder component in Al-33(13)20 ground state

H. Heylen, M. De Rydt, G. Neyens, M. L. Bissell, L. Caceres, R. Chevrier, J. M. Daugas, Y. Ichikawa, Y. Ishibashi, O. Kamalou, T. J. Mertzimekis, P. Morel, J. Papuga, A. Poves, M. M. Rajabali, C. Stodel, J. C. Thomas, H. Ueno, Y. Utsuno, N. Yoshida, A. Yoshimi

PHYSICAL REVIEW C 94 ( 3 ) 2016年9月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：AMER PHYSICAL SOC

The electric quadrupole moment of the Al-33(13)20 ground state, located at the border of the island of inversion, was obtained using continuous-beam beta-detected nuclear quadrupole resonance (beta-NQR). From the measured quadrupole coupling constant nu(Q) = 2.31(4) MHz in an alpha-Al2O3 crystal, a precise value for the electric quadrupole moment is extracted: vertical bar Q(s) (Al-33)vertical bar = 141(3) mb. A comparison with large-scale shell model calculations shows that Al-33 has at least 50% intruder configurations in the ground state wave function, favoring the excitation of two neutrons across the N = 20 shell gap. Al-33 therefore clearly marks the gradual transition north of the deformed Na and Mg nuclei towards the normal Z >= 14 isotopes.

DOI： 10.1103/PhysRevC.94.034312

Web of Science

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Frequency characteristics of nuclear spin oscillator with an artificial feedback toward search for 129Xe atomic electric dipole moment 査読

Takeshi Inoue, Takeshi Furukawa, Akihiro Yoshimi, Tsubasa Nanao, Masatoshi Chikamori, Kunifumi Suzuki, Hironori Hayashi, Hirokazu Miyatake, Yuichi Ichikawa, Masato Tsuchiya, Naoto Hatakeyama, Sota Kagami, Makoto Uchida, Hideki Ueno, Yukari Matsuo, Takeshi Fukuyama, Koichiro Asahi

The European Physical Journal D 70 ( 6 ) 129 2016年6月

Simultaneous Measurements of Superradiance at Multiple Wavelength from Helium Excited States: II. Analysis 査読

Ohae Chiaki, Harries James R, Iwayama Hiroshi, Kawaguchi Kentarou, Kuma Susumu, Miyamoto Yuki, Nagasono Mitsuru, Nakajima Kyo, Nakano Itsuo, Shigemasa Eiji, Sasao Noboru, Uetake Satoshi, Wakabayashi Tomonari, Yoshimi Akihiro, Yoshimura Koji, Yoshimura Motohiko

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 85 ( 3 ) 2016年3月

20pAX-6 中性子過剰核^<39>Sの核磁気モーメント測定

石橋陽子, 市川雄一, 高峰愛子, 今村慧, 藤田朋美, 佐藤智哉, 旭耕一郎, 江上魁, 舟山智歌子, 川口高史, 小島修一郎, 西坂太志, 大友祐一, 小沢顕, 富永大樹, 山崎展樹, 吉見彰洋, 上野秀樹

日本物理学会講演概要集 71 332 - 332 2016年

Recent progress of SPAN towards neutrino mass spectroscopy 査読

Masuda T, Hara H, Miyamoto Y, Sasao N, Tanaka M, Uetake S, Yoshimi A, Yoshimura K, Yoshimura M

Journal of Physics: Conference Series 718 ( 6 ) 2016年

固体パラ水素振動準位を用いたコヒーレント二光子放出の観測

宮本祐樹, 原秀明, 増田孝彦, 植竹智, 笹尾登, 吉見彰洋, 吉村浩司, 吉村太彦

日本物理学会講演概要集 71 577 - 577 2016年

記述言語：日本語出版者・発行元：一般社団法人日本物理学会

<p>二光子吸収は良く知られた二光子過程であるが、逆過程である二光子放出の、特に固体中での報告は少ない。本研究では、固体パラ水素の振動準位をラマン過程によりコヒーレントに励起、さらに中赤外レーザーを照射することで二光子放出のレートを増幅し、観測することに成功した。固体パラ水素の振動状態は長いデコヒーレンス時間を持つため、中赤外レーザーを励起から100ns以上後に入射しても二光子放出が観測された。</p>

DOI： 10.11316/jpsgaiyo.71.2.0_577

CiNii Article

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22aAX-11 ^<129>Xe/^<131>Xe共存核スピンメーザーの周波数特性

小島修一郎, 佐藤智哉, 市川雄一, 田中俊也, 舟山智歌子, 坂本雄, 大友祐一, 平尾千佳, 古川武, 吉見彰洋, Bidinosti C. P., 猪野隆, 上野秀樹, 松尾由賀利, 福山武志, 旭耕一郎

日本物理学会講演概要集 71 436 - 436 2016年

22aAX-10 異核種共存セルにおけるスピン偏極生成・緩和機構

舟山智歌子, 佐藤智哉, 市川雄一, 小島修一郎, 田中俊也, 坂本雄, 大友祐一, 平尾千佳, 古川武, 吉見彰洋, Bidinosti C. P., 猪野隆, 上野秀樹, 松尾由賀利, 福山武志, 旭耕一郎

日本物理学会講演概要集 71 435 - 435 2016年

22aAX-12 異核種共存核スピンメーザーを用いたEDM測定実験

佐藤智哉, 市川雄一, 小島修一郎, 舟山智歌子, 田中俊也, 坂本雄, 大友祐一, 平尾千佳, 近森正敏, 彦田絵里, 古川武, 吉見彰洋, Bidinosti C. P., 猪野隆, 上野秀樹, 松尾由賀利, 福山武志, 旭耕一郎

日本物理学会講演概要集 71 437 - 437 2016年

22aAX-4 フランシウム原子を用いた電子EDM探索に向けたルビジウム磁力計の研究

内山愛子, 井上壮志, 青木隆宏, 伊藤沙希, 加藤浩, 川村広和, 坂本幸祐, 早水友洋, 原田健一, 青木貴稔, 旭耕一郎, 吉見彰洋, 酒見泰寛

日本物理学会講演概要集 71 433 - 433 2016年

Performance assessment of a new laser system for efficient spin exchange optical pumping in a spin maser measurement of 129Xe EDM

C. Funayama, T. Furukawa, T. Sato, Y. Ichikawa, Y. Ohtomo, Y. Sakamoto, S. Kojima, T. Suzuki, C. Hirao, M. Chikamori, E. Hikota, M. Tsuchiya, A. Yoshimi, C. P. Bidinosti, T. Ino, H. Ueno, Y. Matsuo, T. Fukuyama, K. Asahi

Hyperfine Interactions 236 ( 1-3 ) 59 - 64 2015年11月

Experimental search for the electron electric dipole moment with laser cooled francium atoms

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

Hyperfine Interactions 231 ( 1-3 ) 157 - 162 2015年4月

EDM measurement in 129Xe atom using dual active feedback nuclear spin maser

T. Sato, Y. Ichikawa, Y. Ohtomo, Y. Sakamoto, S. Kojima, C. Funayama, T. Suzuki, M. Chikamori, E. Hikota, M. Tsuchiya, T. Furukawa, A. Yoshimi, C. P. Bidinosti, T. Ino, H. Ueno, Y. Matsuo, T. Fukuyama, K. Asahi

Hyperfine Interactions 230 ( 1-3 ) 147 - 153 2015年4月

26aSF-5 冷却フランシウム原子によるEDM探索技術の開発

酒見泰寛, 青木隆宏, 原田健一, 早水友洋, 井上壮志, 伊藤正俊, 伊藤沙希, 加藤浩, 川村広和, 坂本幸祐, 内山愛子, 久野純治, 青木貴稔, 畠山温, 畑中吉治, 若狭智嗣, 高橋義朗, 旭耕一郎, 吉見彰洋

日本物理学会講演概要集 70 251 - 251 2015年

129Xe EDM Search Experiment Using Active Nuclear Spin Maser 査読

JPS Conf. Proc. 6 020031 2015年

Externally triggered coherent two-photon emission from hydrogen molecules 査読

Miyamoto Y, Hara H, Masuda T, Sasao N, Tanaka M, Uetake S, Yoshimi A, Yoshimura K, Yoshimura M

Progress of Theoretical and Experimental Physics 2015 ( 8 ) 2015年

Rate amplification of the two photon emission from para-hydrogen toward the neutrino mass measurement 査読

Masuda T, Hara H, Miyamoto Y, Kuma S, Nakano I, Ohae C, Sasao N, Tanaka M, Uetake S, Yoshimi A, Yoshimura K, Yoshimura M

Hyperfine Interactions 236 ( 1-3 ) 73 - 77 2015年

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