2017年1月
First online multireflection time-of-flight mass measurements of isobar chains produced by fusion-evaporation reactions: Toward identification of superheavy elements via mass spectroscopy
PHYSICAL REVIEW C
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- 巻
- 95
- 号
- 1
- 開始ページ
- 011305(R)-1
- 終了ページ
- 6
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevC.95.011305
- 出版者・発行元
- AMER PHYSICAL SOC
Using a multireflection time-of-flight mass spectrograph located after a gas cell coupled with the gas-filled recoil ion separator GARIS-II, the masses of several alpha-decaying heavy nuclei were directly and precisely measured. The nuclei were produced via fusion-evaporation reactions and separated from projectilelike and targetlike particles using GARIS-II before being stopped in a helium-filled gas cell. Time-of-flight spectra for three isobar chains, Fr-204-Rn-204-At-204-Po-204, Fr-205-Rn-205-At-205-Po-205-Bi-205, and Fr-206-Rn-206-At-206, were observed. Precision atomic mass values were determined for Fr204-206, Rn-204,Rn-205, and At-204,At-205. Identifications of Bi-205, Po-204,Po-205, Rn-206, and At-206 were made with N less than or similar to 10 detected ions, representing the next step toward use of mass spectrometry to identify exceedingly low-yield species such as superheavy element ions.
- リンク情報
- ID情報
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- DOI : 10.1103/PhysRevC.95.011305
- ISSN : 2469-9985
- eISSN : 2469-9993
- Web of Science ID : WOS:000399784100001