A1 Journal article (refereed)
Direct determination of the excitation energy of the quasistable isomer 180mTa (2022)

Nesterenko, D. A., Blaum, K., Delahaye, P., Eliseev, S., Eronen, T., Filianin, P., Ge, Z., Hukkanen, M., Kankainen, A., Novikov, Y. N., Popov, A. V., Raggio, A., Stryjczyk, M., & Virtanen, V. (2022). Direct determination of the excitation energy of the quasistable isomer 180mTa. Physical Review C, 106(2), Article 024310. https://doi.org/10.1103/PhysRevC.106.024310

JYU authors or editors

Publication details

All authors or editors: Nesterenko, D. A.; Blaum, K.; Delahaye, P.; Eliseev, S.; Eronen, T.; Filianin, P.; Ge, Z.; Hukkanen, M.; Kankainen, A.; Novikov, Yu. N.; et al.

Journal or series: Physical Review C

ISSN: 2469-9985

eISSN: 2469-9993

Publication year: 2022

Publication date: 08/08/2022

Volume: 106

Issue number: 2

Article number: 024310

Publisher: American Physical Society (APS)

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1103/PhysRevC.106.024310

Publication open access: Not open

Publication channel open access:

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/82591

Web address of parallel published publication (pre-print): https://arxiv.org/abs/2205.10534

Abstract

180mTa is a naturally abundant quasistable nuclide and the longest-lived nuclear isomer known to date. It is of interest, among others, for the search for dark matter, for the development of a γ laser, and for astrophysics. So far, its excitation energy has not been measured directly but has been based on an evaluation of available nuclear reaction data. We have determined the excitation energy of this isomer with high accuracy using the Penning-trap mass spectrometer JYFLTRAP. The determined mass difference between the ground and isomeric states of 180Ta yields an excitation energy of 76.79(55) keV for 180mTa. This is the first direct measurement of the excitation energy and provides a better accuracy than that of the previous evaluation value, 75.3(14) keV.

Keywords: nuclear physics; tantalum

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Ministry reporting: Yes

Reporting Year: 2022

JUFO rating: 2