First online multireflection time-of-flight mass measurements of isobar chains produced by fusion-evaporation reactions: Toward identification of superheavy elements via mass spectroscopy

• Schury, P.

• Wada, M.

• Ito, Y.

• Kaji, D.

• Arai, F.

• MacCormick, M.

• Murray, I.

• Haba, H.

• Jeong, S.

• Kimura, S.

• Koura, H.

• Miyatake, H.

• Morimoto, K.

• Morita, K.

• OZAWA, Akira

• Rosenbusch, M.

• Reponen, M.

• Soderstrom, P.-A.

• Takamine, A.

• Tanaka, T.

• Wollnik, H.

Bibliographic Information

Other Title

• 融合・蒸発反応により生成させた同位体鎖のオンライン多重時間飛行質量分光の初測定; 質量分光による超重元素の同定を目指して
• First online multireflection time-of-flight measurements of isobar chains produced by fusion-evaporation reactions: toward identification of superheavy elements via mass spectroscopy

Abstract

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, $^{204}$Fr-$^{204}$Rn-$^{204}$At-$^{204}$Po, $^{205}$Fr- $^{205}$Rn-$^{205}$At-$^{205}$Po-$^{205}$Bi, and $^{206}$Fr-$^{206}$Rn-$^{206}$At, were observed. Precision atomic mass values were determined for $^{204-206}$Fr, $^{204,205}$Rn, and $^{204,205}$At. Identifications of $^{205}$Bi, $^{204,205}$Po, $^{206}$Rn, and $^{206}$At were made with N$\leq$10 detected ions, representing the next step toward use of mass spectrometry to identify exceedingly low-yield species such as superheavy element ions.

Journal

• Physical review C

  Physical review C 95 (1), 011305-, 2017-01

  American Physical Society

Details

• CRID: 1050001202654919808
• NII Article ID: 120006502093
• NII Book ID: AA00773613
• DOI: 10.1103/physrevc.95.011305
• ISSN: 24699993
• ISSN: 24699985
• HANDLE: 2241/00146071
• Web Site: https://tsukuba.repo.nii.ac.jp/records/41123
• Web Site: https://jopss.jaea.go.jp/search/servlet/search?5058581
• Web Site: http://link.aps.org/article/10.1103/PhysRevC.95.011305
• Web Site: http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevC.95.011305/fulltext
• Text Lang: en
• Article Type: journal article
• Data Source:
  • IRDB
  • Crossref
  • CiNii Articles
  • KAKEN