First high-precision direct determination of the atomic mass of a superheavy nuclide
文献类型：期刊论文
| 作者 | Schury, P.3; Niwase, T.1,2,3; Wada, M.3; Brionnet, P.1; Chen, S.3,15; Hashimoto, T.14; Haba, H.1; Hirayama, Y.3; Hou, D. S.11,12,13; Iimura, S.1,3,10 |
| 刊名 | PHYSICAL REVIEW C
 |
| 出版日期 | 2021-08-31 |
| 卷号 | 104期号:2页码:7 |
| ISSN号 | 2469-9985 |
| DOI | 10.1103/PhysRevC.104.L021304 |
| 通讯作者 | Schury, P.(schury@post.kek.jp) |
| 英文摘要 | We present the first direct measurement of the atomic mass of a superheavy nuclide. Atoms of (257)Db (Z = 105) were produced online at the RIKEN Nishina Center for Accelerator-Based Science using the fusion-evaporation reaction Pb-208(V-51, 2n)(257)Db. The gas-filled recoil ion separator GARIS-II was used to suppress both the unreacted primary beam and some transfer products, prior to delivering the energetic beam of (257)Db ions to a helium gas-filled ion stopping cell wherein they were thermalized. Thermalized (257)Db(3+) ions were then transferred to a multireflection time-of-flight mass spectrograph for mass analysis. An alpha particle detector embedded in the ion time-of-flight detector allowed disambiguation of the rare (257)Db(3+) time-of-flight detection events from background by means of correlation with characteristic alpha decays. The extreme sensitivity of this technique allowed a precision atomic mass determination from 11 events. The mass excess was determined to be 100 063(231)(stat)(132)(sys) keV/c(2). Comparing to several mass models, we show the technique can be used to unambiguously determine the atomic number as Z = 105 and should allow similar evaluations for heavier species in future work. |
| WOS关键词 | DECAY PROPERTIES ; ELEMENT 115 ; PROJECTILE ; SEPARATION |
| 资助项目 | Japan Society for the Promotion of Science KAKENHI[2200823] ; Japan Society for the Promotion of Science KAKENHI[24224008] ; Japan Society for the Promotion of Science KAKENHI[24740142] ; Japan Society for the Promotion of Science KAKENHI[15H02096] ; Japan Society for the Promotion of Science KAKENHI[17H06090] ; Japan Society for the Promotion of Science KAKENHI[19K03899] ; Japan Society for the Promotion of Science KAKENHI[18H03711] ; Japan Society for the Promotion of Science KAKENHI[15K05116] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000691443200003 |
| 出版者 | AMER PHYSICAL SOC |
| 资助机构 | Japan Society for the Promotion of Science KAKENHI |
| 源URL | [http://119.78.100.186/handle/113462/136387]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Schury, P. |
| 作者单位 | 1.RIKEN Nishina Ctr Accelerator Based Sci, Wako, Saitama 3510198, Japan 2.Kyushu Univ, Dept Phys, Nishi Ku, Fukuoka 8190395, Japan 3.KEK Wako Nucl Sci Ctr, Wako, Saitama 3510198, Japan 4.Tohoku Univ, Inst Mat Res, Yoshikawa Lab, KINKEN,IMR,Aoba Ku, 2-1-1 Katahira, Sendai, Miyagi 9808577, Japan 5.Jinan Univ, Inst Mass Spectrometer & Atmospher Environm, Guangzhou 510632, Peoples R China 6.New Mexico State Univ, Las Cruces, NM 88001 USA 7.Kyushu Univ, Res Ctr SuperHeavy Elements, Nishi Ku, Fukuoka 8190395, Japan 8.Japan Atom Energy Agcy JAEA, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan 9.Yamagata Univ, Grad Sch Sci & Engn, Yamagata, Japan 10.Osaka Univ, Dept Phys, Osaka, Japan |
| 推荐引用方式 GB/T 7714 | Schury, P.,Niwase, T.,Wada, M.,et al. First high-precision direct determination of the atomic mass of a superheavy nuclide[J]. PHYSICAL REVIEW C,2021,104(2):7. |
| APA | Schury, P..,Niwase, T..,Wada, M..,Brionnet, P..,Chen, S..,...&Yan, S. X..(2021).First high-precision direct determination of the atomic mass of a superheavy nuclide.PHYSICAL REVIEW C,104(2),7. |
| MLA | Schury, P.,et al."First high-precision direct determination of the atomic mass of a superheavy nuclide".PHYSICAL REVIEW C 104.2(2021):7. |
入库方式： OAI收割
来源：近代物理研究所
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