Universität zu Köln

Elchine, Dominik ORCID: 0009-0000-7604-9634, Müller, Martin ORCID: 0000-0002-2340-1961, Schiffer, Markus ORCID: 0000-0002-9226-2088 and Strub, Erik ORCID: 0000-0002-4136-2871 (2025). Electron-capture decay of 98Tc. Physical Review C, 112 (4). pp. 1-5. American Physical Society (APS). ISSN 2469-9985

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Abstract

[Artikel-Nr. 044317] From simple symmetry and energy considerations it can be concluded that 98Tc might undergo electron capture decay (EC). In this work we provide evidence for an EC decay of 98Tc measuring 2.67 g K[TcO4] that contains approximately 1 GBq of 99Tc. By use of a lead shielding for the sample, it was possible to identify the coincident 4+ → 2+ and 2+ → 0 + γ transitions in the daughter nuclide 98Mo at the University of Cologne’s Cologne Clover Counting setup of the Institute for Nuclear Physics. For the first time, the EC/β − branching ratio of 0.29(3)% was determined directly. With a log f t of 14.21(7) this decay does almost tie with the log f t of the 36Cl EC decay [14.23(1)] for the same highest second forbidden nonunique transition.

Item Type:	Article
Creators:	Creators Email ORCID ORCID Put Code Elchine, Dominik UNSPECIFIED https://orcid.org/0009-0000-7604-9634 UNSPECIFIED Müller, Martin UNSPECIFIED https://orcid.org/0000-0002-2340-1961 UNSPECIFIED Schiffer, Markus UNSPECIFIED https://orcid.org/0000-0002-9226-2088 UNSPECIFIED Strub, Erik UNSPECIFIED https://orcid.org/0000-0002-4136-2871 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-798289
Identification Number:	10.1103/y5d7-85w5
Journal or Publication Title:	Physical Review C
Volume:	112
Number:	4
Page Range:	pp. 1-5
Number of Pages:	5
Date:	22 October 2025
Publisher:	American Physical Society (APS)
ISSN:	2469-9985
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Physics > Institute for Nuclear Physics Faculty of Mathematics and Natural Sciences > Department of Chemistry > Institute of Inorganic Chemistry
Subjects:	Natural sciences and mathematics Physics Chemistry and allied sciences
['eprint_fieldname_oa_funders' not defined]:	Publikationsfonds UzK
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/79828