Development of high efficient gas cell for collecting the r-process nuclei around N=126 and producing the high purity beam of the nuclei
| Project/Area Number |
24740180
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | High Energy Accelerator Research Organization |
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Principal Investigator |
HIRAYAMA Yoshikazu 大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 助教 (30391733)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 国際情報交換 / ベルギー / 元素合成 / アルゴンガスセル / レーザー共鳴イオン化 / ガスセル |
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| Research Abstract |
By measuring the half-lives of neutron-rich radioactive nuclei with N=126, it is considered that it is possible to understand the process of nucleosynthesis of heavy elements by a rapid neutron-capture reaction in the cosmos. In order to understand the process, we have developed an argon gas-cell with laser ionization for producing an element- and mass-selected radioactive ion beam. The design of a gas cell was optimized by using a flow simulation. The basic property of the gas cell was investigated from the off-line test using a filament placed in the gas cell and from the on-line test using an accelerated beam at RIKEN facility. We have successfully produced an element- and mass-selected ion beam, whose extraction time of about 200 ms was faster than the gas cell produced so far. Owing to the gas cell, we can measure the half-lives of the radioactive nuclei with N=126 for understanding the element synthesis in the cosmos.
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Report
(3 results)
Research Products
(21 results)
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[Journal Article] Ionization cross section measurements for autoionizing states of iridium and rhenium2014
Author(s)
Hirayama Y., Mukai M., Watanabe Y., Imai N., Ishiyama H., Jeong S.-C., Miyatake H., Oyaizu M., Matsuo Y., Sonoda T., Wada M
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Journal Title
J. Physics B
Volume: 47
Issue: 7
Pages: 0752011-8
DOI
Related Report
Peer Reviewed
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[Journal Article] Off-line test of the KISS gas cell2013
Author(s)
Hirayama Y.,Watanabe Y.X., Imai N., Ishiayma H., Jeong S.C., Miyatake H., Oyaizu M., Kim Y.H., Mukai M., Matsuo Y., Sonoda T., Wada M., Mark H., Kudryavstev Y., Van Duppen P
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Journal Title
Nucl. Instrum. Meth
Volume: 317
Pages: 480-483
DOI
Related Report
Peer Reviewed
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[Journal Article] Study of collisions of 136Xe + 198Pt for the KEK isotope separator2013
Author(s)
Watanabe Y.X., Hirayama Y., Imai N., Ishiyama H., Jeong S.C., Miyatake H., Clement E., de France G., Navin A., Rejmund M., Schmit C., Pollarolo G., Corradi L., Fioretto E., Motanari D., Choi S.H., Kim Y.H., Song J.S., Niikura M., Suzuki D., Nishibata H., Takatsu J.
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Journal Title
Nucl. Instrum. Meth
Volume: B 317
Pages: 752-755
DOI
Related Report
Peer Reviewed
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