WINELAND D.J 標準技術研究所(NIST) (アメリカ), 主任研究員
MOORE R.Bob Faculty of Science, McGill Univ., Canada, 理学部・物理教室(カナダ), 教授
VALLI K. Faculty of Science, Jyvaskyla Univ., Finland, 理学部・物理教室(フィンランド), 教授
WERTH Gunter Faculty of Science, Mainz Univ. Germany, 理学部・物理学科(ドイツ), 教授
WOLLNIK Herm ギーセン大学, 理学部・物理教室(ドイツ), 教授
大谷 俊介 電気通信大学, レーザー極限研究センター, 教授 (60023735)
KLUGE Jurgen Atomic Physics Div. GSI, Germany, 主任
篠塚 勉 東北大学, サイクロトロンラジオアイソトープセンター, 助手 (10134066)
藤岡 学 東北大学, サイクロトロンラジオアイソトープセンター, 教授 (70016111)
永井 泰樹 東京工業大学, 理学部, 教授 (80028240)
福田 共和 東京大学, 原子核研究所, 助教授 (50116092)
田辺 徹美 東京大学, 原子核研究所, 助教授 (20013394)
久保野 茂 東京大学, 原子核研究所, 助手 (20126048)
宮地 孝 東京大学, 原子核研究所, 助手 (20013401)
川上 宏金 東京大学, 原子核研究所, 助手 (50013412)
和田 道治 東京大学, 原子核研究所, 助手 (50240560)
野村 亨 東京大学, 原子核研究所, 教授 (60087393)
SHINOZUKA Tsutomu Cyclotron Radio Isotope Center, Tohoku Univ.
FUJIOKA Manabu Cyclotron Radio Isotope Center, Tohoku Univ.
NAGAI Yasuki Fauculty of Science, Tokyo Inst. of Technology
FUKUDA Tomokazu Institute for Nuclear Study, Univ. of Tokyo
TANABE Tetsumi Institute for Nuclear Study, Univ. of Tokyo
KUBONO Shigeru Institute for Nuclear Study, Univ. of Tokyo
KAWAKAMI Hirokane Institute for Nuclear Study, Univ. of Tokyo
MIYACHI Takashi Institute for Nuclear Study, Univ. of Tokyo
NOMURA Toru Institute for Nuclear Study, Univ. of Tokyo
WADA Michiharu Institute for Nuclear Study, Univ. of Tokyo
WINELAND D.J. Frequency Division, NIST, U.S.A
WOLLNIK Herman Faculty of Science, Gissen Univ., Germany
OHTANI Shunsuke Laser Center, Electro Communication Univ.
There has been a great progress in high precision measurement of fundamental quantities which was achieved by utilizing an ion trap in quantum optics. The present study aims at applying this experimental method in order to investigate a very precise property of unstable nuclei. In the beginning, we had discussed about two possibilities i.e., measurements of high precision mass as well as hyperfine anomaly. After discussion with Profs.Kluge and Moore, we have decided to start for hyperfine anomaly at first. Since Prof.Werth of Mainz Univ. and his group have been expert in this field, we came to a conclusion to promote a collaboration work with his group by this exchange project. This collaboration has been found to be very fruitful and complementary for each other since at Mainz the ion trap system is off-line type which can only manipulate stable and long life radio-isotopes. On the other hand, at INS, Tokyo, the trap system which has been aimed at is on-line type, especially suited fo
r the research on short-life unstable nuclei.
This year, the exchange fund has been used in research activities in three directions, viz, (1) collaboration with Mainz group to promote a laser-micro wave double resonance experiment, (2) development of injection technique of ions prepared outside of an ion trap, and (3) collection and/or exchange of physics information in relating fields. Regarding to (1), Prof.Werth and a post-doc of Mainz Univ. visited Japan to collaborate to a ^<43>Ca^+ double-resonance experiment at Laser Center of Electro Communication Univ., since the laser system has been assembled and tuned at that place and tested by a bench mark experiment of the double resonance. On the other hand, Wada of INS visited Mainz to discuss about the collaboration. In 1994 autumn, a doctor course student of Electro Comm. Univ. is invited to participate in an experiment at Mainz. Relating (2), Wada visited Univ. Gissen to work for a design of the cyclotron beam transport system for the ion trap system at INS. This collaboration was then proceeded by a visit of Prof. Wollnik of Gissen Univ. to INS. An INS engineer Mr.J.Tanaka visited Prof.Valli at Jyvaskyla Univ. to exchange the information of the ion-guide technique, especially of the recent INS work on a multiple rf field equipment SPIG. Relating to (3), Katayama visited several Institutes in USA to examine and exchange the recent results of ion trap experiments. At NIST, Dr.Wineland and his group has shown their interest on INS experiment, which will hopefully proceed to a future collaboration. Tanabe and Miyachi visited Europe to exchange the information of ion-atom interaction and a detector system, respectively. Kubono, Fukuda and Nagai visited GSI and Jyvaskyla to exchange the information of nuclear structure of unstable nuclei. Less