| Project/Area Number |
07044081
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| Research Category |
Grant-in-Aid for international Scientific Research
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| Allocation Type | Single-year Grants |
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| Section | Joint Research |
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| Research Institution | KYOTO UNIVERSITY |
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Principal Investigator |
MATSUKI Seishi Institute for Chemical Research, Kyoto University Associate Professor, 化学研究所, 助教授 (50037941)
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| Co-Investigator(Kenkyū-buntansha) |
PINARD J. Aim'e Cutton Laboratory, CNRS, France, 上級研究員
DUONG H.t. Aim'e Cotton Laboratory, CNRS, France, 上級研究員
OGAWA Izumi Inct. for Chem. Research, Kyoto University, 化学研究所, 学振特別研究員
WAKASUGI Masanori Institute for Phy. Chem. Research, RIKEN, サイクロトロン研究室, 研究員 (70250107)
INAMURA Takashi Institute for Phys. Chem, Recearch, RIKEN, 安全管理室, 室長 (30087390)
MURAYAMA Toshiyuki Physics Deprt, Tokyo Univ. Mercantile Marine., 物理学科, 助教授 (50200308)
YABUZAKI Tsutomu Department of Physics, Kyoto University, 大学院理学系研究科, 教授 (60026127)
FUJIOKA Manabu Cylotwn Radioisotope Centey, Tohoku University, サイクロトロンラジオアイソトープセンター, 教授 (70016111)
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| Project Period (FY) |
1995
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| Project Status |
Completed (Fiscal Year 1995)
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| Budget Amount *help |
¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 1995: ¥2,500,000 (Direct Cost: ¥2,500,000)
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| Keywords | Hyerfine an omaly / laser-rf louble resonance / unstable nuclear structure / CERN / ISOLDE / Hyperfine constant / magnetic moment |
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| Research Abstract |
The aim of the present investigation is to measure the finite broadening of magnetic moment of unstable nuclei through the observation of the hyperfine anomaly, so called Bohr-Weisskopf effect. Precision measurements of the hyperfine anomaly thus provide important information on the structure of unstable nuclei far from the stability line. For this purpose, precision measurements of both the hyperfine structure constant and nuclear g-factor have to be performed independently.
We have constructed an apparatus with which we can measure both the hyperfine structure constant and the nuclear g-factor independently : The apparatus is of atomic-beam magnetic resonance system consisting mainly of three electromagnets and laser-microwave triple resonance system. Unstable ion beam from the CERN/ISOLDE mass separator is stopped in a neutralizer and then produced slow neutralized-atomic-beam is passed through the apparatus to perform the triple microwave magnetic resonance. The atoms are optically pumped to a suitable excited states and then depopulated with the applied microwave fields, thus enabling us to measure the resonances.
The apparatus was successfully tested with off-line stable Cs beam and now the g factor of one of the unstable Cs isotopes has been measured with fairly well accuracy. We are expecting to measure hyperfine anomaly of various unstable Cs isotopes further in the next year.
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