2013 Fiscal Year Final Research Report
Measurement of magnetic moment of neutron-rich unstable nuclei
| Project/Area Number |
23540336
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Tohoku University |
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Principal Investigator |
SHINOZUKA TSUTOMU 東北大学, サイクロトロン・ラジオアイソトープセンター, 非常勤講師 (10134066)
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| Co-Investigator(Kenkyū-buntansha) |
WAKUI Takashi 東北大学, サイクロトロン・ラジオアイソトープセンター, 助教 (70359644)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 原子核構造 / 不安定核 / オンライン質量分離 / イオンガイド法 / SPIG |
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| Research Abstract |
To conduct the precision nuclear spectroscopy of neutron-rich nuclei in the medium mass region, we have been developing an RF-ion guide method with a short extraction time and a high extraction efficiency. In this study, we have newly installed a sextupole ion guide (SPIG) which is used to transport the ions from the exit hole of the gas cell to the acceleration electrode. The SPIG improves the efficiency of differential pumping and reduces the energy spread of the extracted ions. This results in a high mass resolution and consequently in a large mass-separated yield of neutron-rich nuclei at the detection region. The mass resolving power (MRP), defined as M/delta M, has been measured for the stable Xe isotopes to investigate the effect of the SPIG. The MRP of 310 was achieved after installing the SPIG. The MRP is more than 5 times higher than that before installing the SPIG. We have succeeded in improving the MRP with the SPIG.
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