Toward the first trap of radioactive atoms in an optical lattice

• Project/Area Number: 25610112
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Atomic/Molecular/Quantum electronics
• Research Institution: Tohoku University
• Principal Investigator: Kawamura Hirokazu 東北大学, 学際科学フロンティア研究所, 助教 (50586047)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: フランシウム / ルビジウム / 光格子 / 磁気光学トラップ / 表面電離 / 熱的表面中性化 / 光格子トラップ / ウィーンフィルター / 表面中性化 / 不安定原子 / レーザー冷却 / 光トラップ

Outline of Final Research Achievements

This work aimed at the trap of radioactive atoms such as francium in an optical lattice formed by the interference of laser beams. Francium will be produced via the nuclear fusion reaction, ionized by the surface ionization, transported as an ion beam, converted to neutral atoms, and cooled in a magneto-optical trap. Finally the cooled francium will be trapped in the optical lattice.
In this work, a signal in synchronization with a sequence of the francium-trap experiment was achieved. In order to make sure this signal, experimental components have been developed individually. As a result, their abilities and performances have been improved.

Research Products

• [Journal Article] Laser frequency locking with 46 GHz offset using an electro-optic modulator for magneto-optical trapping of francium atoms (2016)
  • Author(s): K. Harada , T. Murakami et al.
  • Journal Title: Applied Optics Volume: 55 Issue: 5 Pages: 001164-001164
  • DOI: 10.1364/ao.55.001164
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Transportation of a radioactive ion beam for precise laser-trapping experiments (2016)
  • Author(s): Hirokazu Kawamura et al. （全14名中1番目）
  • Journal Title: Rev. Sci. Instrum. Volume: 87 Issue: 2
  • DOI: 10.1063/1.4935013
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Towards the Measurement of the Electric-Dipole Moment of Radioactive Francium using Laser-Cooling and Trapping Techniques (2015)
  • Author(s): 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. Aoki, T. Furukawa, A. Hatakeyama, K. Hatanaka, K. Imai, T. Murakami, H.S. Nataraj, T. Sato, Y. Shimizu, T. Wakasa, H.P. Yoshida, Y. Sakemi
  • Journal Title: JPS Conf.Proc. Volume: 6 Pages: 0300681-4
  • DOI: 10.7566/jpscp.6.030068
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Development of Laser Light Sources for Trapping Radioactive Francium Atoms Toward Tests of Fundamental Symmetries (2015)
  • Author(s): K. Harada, S.Ezure, T. Hayamizu, K.Kato (CYRIC, Tohoku U.) , H.Kawamura, T. Inoue (Tohoku U., IIAIR & CYRIC, Tohoku U.) , H.Arikawa, T. Ishikawa, T. Aoki, A. Uchiyama M.toh, S. Ando (CYRIC, Tohoku U.) , T.Aoki (Tokyo, U. Earth Sci. Astron.) , Y. Sakemi (CYRIC, Tohoku U.) et al.
  • Journal Title: JPS Conf.Proc. Volume: 6 Pages: 0301281-5
  • DOI: 10.7566/jpscp.6.030128
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Development of Magnetometer Based on the Nonlinear Magneto-Optical Rotation Effect Toward the Measurement of the Electron Electric Dipole Moment (2015)
  • Author(s): Takeshi 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, A. Yoshimi, H.P. Yoshida, Y. Sakemi
  • Journal Title: JPS Conf.Proc. Volume: 6 Pages: 0300701-4
  • DOI: 10.7566/jpscp.6.030070
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Magneto-optical trapping of radioactive atoms for test of the fundamental symmetries (2015)
  • Author(s): H. Kawamura (Tohoku U., Inst. Materials Res. & CYRIC, Tohoku U.) , S. Ando, T. Aoki, H. Arikawa, K. Harada, T. Hayamizu (CYRIC, Tohoku U.) , T. Inoue (Tohoku U., Inst. Materials Res. & CYRIC, Tohoku U.) , T. Ishikawa, M. Itoh, K. Kato L. Köhler, J. Mathis, K. Sakamoto, A. Uchiyama, Y. Sakemi (CYRIC, Tohoku U.)
  • Journal Title: Hyperfine Interact. Volume: 236 Issue: 1-3 Pages: 53-58
  • DOI: 10.1007/s10751-015-1193-1
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Towards a high-efficiency magneto-optical trap for rare isotopes (2015)
  • Author(s): Hirokazu Kawamura
  • Journal Title: Proceedings of 7th International Workshop on Fundamental Physics Using Atoms 2014 Volume: - Pages: 66-69
• [Journal Article] Development of an Ion-to-Atom Converter Based on the Orthotropic Source for a Magneto-Optical Trapping of Francium (2014)
  • Author(s): H. Kawamura et al. （全11名中1番目）
  • Journal Title: CYRIC Annual Report 2012-2013 Volume: - Pages: 13-17
  • Open Access
• [Journal Article] Neutralization of Radioactive Francium Atoms Using a Rotatable Yttrium Target (2014)
  • Author(s): H. Kawamura et al. （全13名中1番目）
  • Journal Title: CYRIC Annual Report 2012-2013 Volume: - Pages: 18-22
  • Open Access / Acknowledgement Compliant
• [Journal Article] Search fbr a permanent EDM using laser cooled radioactive atom (2014)
  • Author(s): H, Kawamura, S. Ando, T. Aoki, H. Arikawa, S. Ezure, K. Harada, T. Havamizu, T. Inoue, T. Ishikawa, M. Itoh, K. Kato, T. Kato, H. S. Nataraj, T. Sato, A. Uchiyama, T. Aoki, T. Furukawa, A. Hatakeyama, K. Hatanaka, K. Imai, T. Murakami, Y Shimizu, T. Wakasa, H. P. Yoshida, Y. Sakemi
  • Journal Title: EPJ Web of Conferences Volume: 66 Pages: 5009-5009
  • DOI: 10.1051/epjconf/20146605009
  • Peer Reviewed / Open Access
• [Journal Article] Development of the Measurement System for the Search of an Electric Dipole Moment of the Electron with Laser-Cooled Francium Atoms (2014)
  • Author(s): T. Inoue et al. (全25名中12番目)
  • Journal Title: EPJ Web of Conferences Volume: 66
  • Peer Reviewed
• [Journal Article] Development of francium atomic beam for the search of the electron electric dipole moment (2014)
  • Author(s): Tomoya Sato et al. (全25名中13番目)
  • Journal Title: EPJ Web of Conferences Volume: 66
  • Peer Reviewed
• [Journal Article] Laser cooled francium factory for the electron electric dipole moment search (2014)
  • Author(s): Tomohiro Hayamizu et al. (全25名中9番目)
  • Journal Title: JPS Conf. Proc. Volume: 1
  • Peer Reviewed
• [Journal Article] Radioactive ion beam transporation for the fundamental symmetry study with laser-trapped atoms (2014)
  • Author(s): H. Arikawa et al. (全25名中10番目)
  • Journal Title: Rev. Sci. Instrum. Volume: 85
  • Peer Reviewed
• [Journal Article] Laser-cooled radioactlve francium factory at CYRIC (2013)
  • Author(s): Hirokazu Kawamura, H. Arikawa, S. Ezure, K. Harada, T. Havamizu, T. Inoue, T. Ishikawa, M. Itoh, T. Kato, T. Sato, T. Aoki, T Furukawa, A. Hatakeyama, K. Hatanaka, K. Imai, T. Murakami, H. S. Nataraj, Y. Shimizu, T. Wakasa, H. P. Ybshida, Y. Sakemi
  • Journal Title: Nuclear Instruments and Methods in Physics Research Section B Volume: 317 Pages: 582-585
  • DOI: 10.1016/j.nimb.2013.07.038
  • Peer Reviewed
• [Presentation] フランシウムを用いた電子EDM探索に向けたイオン・中性原子変換過程の調査 (2016)
  • Author(s): 川村広和他
  • Organizer: 日本物理学会第71回年次大会
  • Place of Presentation: 仙台市
  • Year and Date: 2016-03-19
• [Presentation] 電子EDM探索のための表面電離型フランシウムイオン源の新規開発 (2016)
  • Author(s): 伊藤沙希他
  • Organizer: 日本物理学会第71回年次大会
  • Place of Presentation: 仙台市
  • Year and Date: 2016-03-19
• [Presentation] Development of a francium ion source toward a search for the electron EDM (2015)
  • Author(s): Hirokazu Kawamura et al.
  • Organizer: 8th International Workshop on "Fundamental Physics Using Atoms" (FPUA2015)
  • Place of Presentation: Saitama, Japan
  • Year and Date: 2015-11-30
  • Int'l Joint Research
• [Presentation] Measurement of a neutralization efficiency of francium with Y, Zr and Gd for the electron EDM search (2015)
  • Author(s): Takahiro Aoki et al.
  • Organizer: 8th International Workshop on "Fundamental Physics Using Atoms" (FPUA2015)
  • Place of Presentation: Saitama, Japan
  • Year and Date: 2015-11-30
  • Int'l Joint Research
• [Presentation] Transportation of a radioactive ion beam for precise laser-trapping experiments (2015)
  • Author(s): Hirokazu Kawamura et al.
  • Organizer: The 16th International Conference on Ion Sources (ICIS2015)
  • Place of Presentation: New York, USA
  • Year and Date: 2015-08-23
  • Int'l Joint Research
• [Presentation] A factory of laser-cooled radioactive atoms for a test of fundamental symmetries (2015)
  • Author(s): Hirokazu Kawamura et al.
  • Organizer: Exploring Fundamental Physics using Atomic Systems (EFPAS 2015)
  • Place of Presentation: Ahmedabad, India
  • Year and Date: 2015-05-06
  • Int'l Joint Research
• [Presentation] Magneto-optical trapping of radioactive atoms for test of the fundamental symmetries (2014)
  • Author(s): H. Kawamura et al.
  • Organizer: The sixth international conference on Trapped Charged Particles and Fundamental Physics (TCP2014)
  • Place of Presentation: Takamatsu, Kagawa, Japan
  • Year and Date: 2014-12-01 – 2014-12-05
• [Presentation] レーザー冷却原子によるCP対称性破れの探索 (2014)
  • Author(s): 川村広和他
  • Organizer: CP violation in elementary particles and composite systems
  • Place of Presentation: 大阪府茨木市
  • Year and Date: 2014-11-10 – 2014-11-11
  • Invited
• [Presentation] Towards the measurement of the electron EDM with laser cooled francium atoms (2014)
  • Author(s): H. Kawamura et al.
  • Organizer: Fourth Joint Meeting of the Nuclear Physics Divisions of the American Physical Society and The Physical Society of Japan (HAWAII2014)
  • Place of Presentation: Waikoloa, Hawaii, USA
  • Year and Date: 2014-10-07 – 2014-10-11
  • Invited
• [Presentation] Towards the measurement of the electric-dipole moment of radioactive francium using laser-cooling and trapping techniques (2014)
  • Author(s): H. Kawamura et al.
  • Organizer: The 2nd Conference on "Advances in Radioactive Isotope Science" (ARIS2014)
  • Place of Presentation: Hongo, Tokyo, Japan
  • Year and Date: 2014-06-01 – 2014-06-06
• [Presentation] Towards a high-efficiency magneto-optical trap for rare isotopes (2014)
  • Author(s): Hirokazu Kawamura et al.
  • Organizer: 7th International conference on Fundamental Physics Using Atoms (FPUA 2014)
  • Place of Presentation: Tokyo, Japan
• [Presentation] フランシウムを用いた電子EDM探索のためのレーザー冷却不安定原子生成工場 (2013)
  • Author(s): 川村広和他
  • Organizer: 日本物理学会2013年秋季大会
  • Place of Presentation: 高知
• [Presentation] Search for a permanent EDM using laser cooled radioactive atom (2013)
  • Author(s): Hirokazu Kawamura et al.
  • Organizer: 25th International Nuclear Physics Conference (INPC 2013)
  • Place of Presentation: Firenze, Italy
• [Remarks] 川村広和の研究活動
  • URL: http://cycgw1.cyric.tohoku.ac.jp/~kawamura/
• [Remarks] 川村広和
  • URL: http://cycgw1.cyric.tohoku.ac.jp/~kawamura/