Isomeric Excitation Energy for 99In^m from Mass Spectrometry Reveals Constant Trend Next to Doubly Magic 100Sn

L. Nies; D. Atanasov; M. Athanasakis-Kaklamanakis; M. Au; K. Blaum; J. Dobaczewski; B. S. Hu; J. D. Holt; J. Karthein; I. Kulikov; Yu. A. Litvinov; D. Lunney; V. Manea; T. Miyagi; M. Mougeot; L. Schweikhard; A. Schwenk; K. Sieja; F. Wienholtz

doi:10.1103/PhysRevLett.131.022502

Isomeric Excitation Energy for 99In^m from Mass Spectrometry Reveals Constant Trend Next to Doubly Magic 100Sn

L. Nies, D. Atanasov, M. Athanasakis-Kaklamanakis, M. Au, K. Blaum, J. Dobaczewski, B. S. Hu, J. D. Holt, J. Karthein, I. Kulikov, Yu. A. Litvinov, D. Lunney, V. Manea, T. Miyagi, M. Mougeot, L. Schweikhard, A. Schwenk, K. Sieja, F. Wienholtz

Physics

Research output: Contribution to journal › Letter › peer-review

Abstract

The excitation energy of the 1/2- isomer in 99In at N=50 is measured to be 671(37) keV and the mass uncertainty of the 9/2+ ground state is significantly reduced using the ISOLTRAP mass spectrometer at ISOLDE/CERN. The measurements exploit a major improvement in the resolution of the multireflection time-of-flight mass spectrometer. The results reveal an intriguing constancy of the 1/2- isomer excitation energies in neutron-deficient indium that persists down to the N=50 shell closure, even when all neutrons are removed from the valence shell. This trend is used to test large-scale shell model, ab initio, and density functional theory calculations. The models have difficulties describing both the isomer excitation energies and ground-state electromagnetic moments along the indium chain.

Original language	English
Article number	022502
Number of pages	8
Journal	Physical Review Letters
Volume	131
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevLett.131.022502
Publication status	Published - 14 Jul 2023

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Isomeric Excitation Energy for 99Inm from Mass Spectrometry Reveals Constant Trend Next to Doubly Magic 100SnFinal published version, 732 KBLicence: CC BY

Nuclear Physics Consolidated Grant 2021-2024
Jenkins, D., Andreyev, A., Bashkanov, M., Bentley, M., Dobaczewski, J. J., Laird, A. M., Paschalis, S., Pastore, A., Petri, M., Wadsworth, R., Watts, D. & Zachariou, N.
SCIENCE AND TECHNOLOGY FACILITIES COUNCIL (STFC)
1/10/21 → 31/03/25
Project: Research project (funded) › Research

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Nies, L., Atanasov, D., Athanasakis-Kaklamanakis, M., Au, M., Blaum, K., Dobaczewski, J., Hu, B. S., Holt, J. D., Karthein, J., Kulikov, I., Litvinov, Y. A., Lunney, D., Manea, V., Miyagi, T., Mougeot, M., Schweikhard, L., Schwenk, A., Sieja, K., & Wienholtz, F. (2023). Isomeric Excitation Energy for 99In^m from Mass Spectrometry Reveals Constant Trend Next to Doubly Magic 100Sn. Physical Review Letters, 131(2), Article 022502. https://doi.org/10.1103/PhysRevLett.131.022502

@article{cec70a43c4f947f6ab9ed283520c33e8,

title = "Isomeric Excitation Energy for 99In^m from Mass Spectrometry Reveals Constant Trend Next to Doubly Magic 100Sn",

abstract = "The excitation energy of the 1/2- isomer in 99In at N=50 is measured to be 671(37) keV and the mass uncertainty of the 9/2+ ground state is significantly reduced using the ISOLTRAP mass spectrometer at ISOLDE/CERN. The measurements exploit a major improvement in the resolution of the multireflection time-of-flight mass spectrometer. The results reveal an intriguing constancy of the 1/2- isomer excitation energies in neutron-deficient indium that persists down to the N=50 shell closure, even when all neutrons are removed from the valence shell. This trend is used to test large-scale shell model, ab initio, and density functional theory calculations. The models have difficulties describing both the isomer excitation energies and ground-state electromagnetic moments along the indium chain.",

author = "L. Nies and D. Atanasov and M. Athanasakis-Kaklamanakis and M. Au and K. Blaum and J. Dobaczewski and Hu, {B. S.} and Holt, {J. D.} and J. Karthein and I. Kulikov and Litvinov, {Yu. A.} and D. Lunney and V. Manea and T. Miyagi and M. Mougeot and L. Schweikhard and A. Schwenk and K. Sieja and F. Wienholtz",

year = "2023",

month = jul,

day = "14",

doi = "10.1103/PhysRevLett.131.022502",

language = "English",

volume = "131",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "2",

}

Nies, L, Atanasov, D, Athanasakis-Kaklamanakis, M, Au, M, Blaum, K, Dobaczewski, J, Hu, BS, Holt, JD, Karthein, J, Kulikov, I, Litvinov, YA, Lunney, D, Manea, V, Miyagi, T, Mougeot, M, Schweikhard, L, Schwenk, A, Sieja, K & Wienholtz, F 2023, 'Isomeric Excitation Energy for 99In^m from Mass Spectrometry Reveals Constant Trend Next to Doubly Magic 100Sn', Physical Review Letters, vol. 131, no. 2, 022502. https://doi.org/10.1103/PhysRevLett.131.022502

TY - JOUR

T1 - Isomeric Excitation Energy for 99In^m from Mass Spectrometry Reveals Constant Trend Next to Doubly Magic 100Sn

AU - Nies, L.

AU - Atanasov, D.

AU - Athanasakis-Kaklamanakis, M.

AU - Au, M.

AU - Blaum, K.

AU - Dobaczewski, J.

AU - Hu, B. S.

AU - Holt, J. D.

AU - Karthein, J.

AU - Kulikov, I.

AU - Litvinov, Yu. A.

AU - Lunney, D.

AU - Manea, V.

AU - Miyagi, T.

AU - Mougeot, M.

AU - Schweikhard, L.

AU - Schwenk, A.

AU - Sieja, K.

AU - Wienholtz, F.

PY - 2023/7/14

Y1 - 2023/7/14

N2 - The excitation energy of the 1/2- isomer in 99In at N=50 is measured to be 671(37) keV and the mass uncertainty of the 9/2+ ground state is significantly reduced using the ISOLTRAP mass spectrometer at ISOLDE/CERN. The measurements exploit a major improvement in the resolution of the multireflection time-of-flight mass spectrometer. The results reveal an intriguing constancy of the 1/2- isomer excitation energies in neutron-deficient indium that persists down to the N=50 shell closure, even when all neutrons are removed from the valence shell. This trend is used to test large-scale shell model, ab initio, and density functional theory calculations. The models have difficulties describing both the isomer excitation energies and ground-state electromagnetic moments along the indium chain.

AB - The excitation energy of the 1/2- isomer in 99In at N=50 is measured to be 671(37) keV and the mass uncertainty of the 9/2+ ground state is significantly reduced using the ISOLTRAP mass spectrometer at ISOLDE/CERN. The measurements exploit a major improvement in the resolution of the multireflection time-of-flight mass spectrometer. The results reveal an intriguing constancy of the 1/2- isomer excitation energies in neutron-deficient indium that persists down to the N=50 shell closure, even when all neutrons are removed from the valence shell. This trend is used to test large-scale shell model, ab initio, and density functional theory calculations. The models have difficulties describing both the isomer excitation energies and ground-state electromagnetic moments along the indium chain.

U2 - 10.1103/PhysRevLett.131.022502

DO - 10.1103/PhysRevLett.131.022502

M3 - Letter

SN - 0031-9007

VL - 131

JO - Physical Review Letters

JF - Physical Review Letters

IS - 2

M1 - 022502

ER -

Isomeric Excitation Energy for 99In^m from Mass Spectrometry Reveals Constant Trend Next to Doubly Magic 100Sn

Abstract

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Nuclear Physics Consolidated Grant 2021-2024

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