2016 Fiscal Year Annual Research Report
共鳴イオン化分光法による不安定タングステン、オスミウム同位体の研究
| Project/Area Number |
14F04735
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| Research Institution | Institute of Physical and Chemical Research |
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Principal Investigator |
和田 道治 国立研究開発法人理化学研究所, 仁科加速器研究センター, チームリーダー (50240560)
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| Co-Investigator(Kenkyū-buntansha) |
REPONEN MIKAEL 国立研究開発法人理化学研究所, 仁科加速器研究センター, 外国人特別研究員
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| Project Period (FY) |
2014-04-25 – 2017-03-31
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| Keywords | レーザー核分光 / 共鳴イオン化分光 / 高融点元素 / パラサイトRIビーム |
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| Outline of Annual Research Achievements |
The last months of my JSPS fellowship were dedicated to preparing for upcoming PALIS commissioning experiments taking place in the following autumn. This included installing the PALIS set-up back to the BigRIPS F2 chamber and work to resolve issues that arose during the previous experiments in FY2015, for example isolating sources of vibrations that affected the laser beam positioning. Additionally, a motorized stage for final aiming of the laser was developed. The stage was successfully utilized during the measurements in autumn where provided critical laser alignment aid.
Regarding the primary JSPS fellowship research project, multiple potential ionization schemes were identified for osmium and tungsten leveraging on the combined Dye and Titanium:sapphire system. In anticipation for applying these schemes, the resonance ionization process within the PALIS-system has been simulated utilizing rate-equations in order to determine the factors affecting the, and to probe the ionization efficiency. These simulations will be invaluable when proceeding towards high-resolution RIS utilizing an injection-locked Titanium:sapphire laser, recently commissioned in an off-line conditions with zirconium in collaboration with the University of Nagoya.
Shortly after finishing the JSPS fellowship, I began an Academy of Finland funded 3 years position in Finland. This position includes funding for research Japan thus enabling a direct continuation for the research projects started under the JSPS fellowship.
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| Research Progress Status |
28年度が最終年度であるため、記入しない。
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| Strategy for Future Research Activity |
28年度が最終年度であるため、記入しない。
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[Journal Article] First online multireflection time-of-flight mass measurements of isobar chains produced by fusion-evaporation reaction: Toward identification of superheavy elements via mass spectroscopy2017
Author(s)
P. Schury, M. Wada, Y. Ito, D. Kaji, F. Arai, M. MacCormick, I. Murray, H. Haba, S. Jeong, S. Kimura, H. Koura, H. Miyatake, K. Morimoto, K. Morita, A. Ozawa, M. Rosenbusch, M. Reponen, P.-A. Soederstroem, A. Takamine, T. Tanaka, H. Wollnik
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Journal Title
Physical Review
Volume: 95
Pages: 011305
DOI
Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
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