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公開
学術論文

High-precision mass measurement of doubly magic 208Pb

MPS-Authors
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Kromer,  Kathrin
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Lyu,  Chunhai
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society;

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Door,  Menno
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Filianin,  Pavel
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Harman,  Zoltan
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society;

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Herkenhoff,  Jost
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Keitel,  Christoph H.
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society;

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Lange,  Daniel
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Schweiger,  Christoph
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Eliseev,  Sergey
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Blaum,  Klaus
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

External Resource

https://link.springer.com/content/pdf/10.1140/epja/s10050-022-00860-1.pdf
(出版社版)

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フルテキスト (公開)

2210.11602.pdf
(プレプリント), 2MB

付随資料 (公開)

s10050-024-01276-9.pdf
(付録資料), 214KB

引用

Kromer, K., Lyu, C., Door, M., Filianin, P., Harman, Z., Herkenhoff, J., Huang, W., Keitel, C. H., Lange, D., Novikov, Y. N., Schweiger, C., Eliseev, S., & Blaum, K. (2022). High-precision mass measurement of doubly magic 208Pb. The European Physical Journal A: Hadrons and Nuclei, 58:. doi:10.1140/epja/s10050-022-00860-1.


引用: https://hdl.handle.net/21.11116/0000-000B-578A-8
要旨
The absolute atomic mass of 208Pb has been determined with a fractional uncertainty of 7 × 10−11 by measuring the cyclotron-frequency ratio R of 208Pb41+ to 132Xe26+ with the high-precision Penning-trap mass spectrometer Pentatrap and computing the binding energies EPb and EXe of the missing 41 and 26 atomic electrons, respectively, with the ab initio fully relativistic multi-configuration Dirac–Hartree–Fock (MCDHF) method. R has been measured with a relative precision of 9 × 10−12 . EPb and EXe have been computed with an uncertainty of 9.1 eV and 2.1 eV, respectively, yielding 207.976 650 571(14) u (u = 9.314 941 024 2(28) × 108 eV/c2 ) for the 208 Pb neutral atomic mass. This result agrees within 1.2σ with that from the Atomic-Mass Evaluation (AME) 2020, while improving the precision by almost two orders of magnitude. The new mass value directly improves the mass precision of 14 nuclides in the region of Z = 81–84 and is the most precise mass value with A > 200. Thus, the measurement establishes a new region of reference mass values which can be used e.g. for precision mass determination of transuranium nuclides, including the superheavies.