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  Precision measurement of 65Zn electron-capture decays with the KDK coincidence setup

The KDK Collaboration, Hariasz, L., Di Stefano, P., Stukel, M., Rasco, B., Rykaczewski, K., et al. (2023). Precision measurement of 65Zn electron-capture decays with the KDK coincidence setup. Nuclear Data Sheets, 189, 224-234. Retrieved from https://publications.mppmu.mpg.de/?action=search&mpi=MPP-2023-314.

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Datensatz-Permalink: https://hdl.handle.net/21.11116/0000-000F-1272-C Versions-Permalink: https://hdl.handle.net/21.11116/0000-000F-1273-B
Genre: Zeitschriftenartikel

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The KDK Collaboration1, Autor
Hariasz, L.1, Autor
Di Stefano, P.C.F.1, Autor
Stukel, M.1, Autor
Rasco, B.C.1, Autor
Rykaczewski, K.P.1, Autor
Brewer, N.T.1, Autor
Grzywacz, R.K.1, Autor
Lukosi, E.D.1, Autor
Stracener, D.W.1, Autor
Mancuso, M.1, Autor
Petricca, F.1, Autor
Ninkovic, J.1, Autor
Lechner, P.1, Autor
Affiliations:
1Max Planck Institute for Physics, Max Planck Society and Cooperation Partners, ou_2253650              

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Schlagwörter: Experimental Physics
 Zusammenfassung: 65 Zn is a common calibration source, moreover used as a radioactive tracer in medical and biological studies. In many cases, γ-spectroscopy is a preferred method of 65Zn standardization, which relies directly on the branching ratio of Jπ(65Zn)=5/2−→Jπ(65Cu)=5/2− via electron capture (EC*). We measure the relative intensity of this branch to that proceeding directly to the ground state (EC0) using a novel coincidence technique, finding IEC0/IEC*=0.9684±0.0018. Re-evaluating the decay scheme of 65Zn by adopting the commonly evaluated branching ratio of Iβ+=1.4271(7)% we obtain IEC*=(50.08±0.06)%, and IEC^0=(48.50±0.06)%. The associated 1115 keV gamma intensity agrees with the previously reported NNDC value, and is now accessible with a factor of ~2 increase in precision. Our re-evaluation removes reliance on the deduction of this gamma intensity from numerous measurements, some of which disagree and depend directly on total activity determination. The KDK experimental technique provides a new avenue for verification or updates to the decay scheme of 65Zn, and is applicable to other isotopes.

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Sprache(n):
 Datum: 2023
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: Anderer: MPP-2023-314
URI: https://publications.mppmu.mpg.de/?action=search&mpi=MPP-2023-314
arXiv: arxiv:2308.03965
URI: https://inspirehep.net/arxiv/2308.03965
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Titel: Nuclear Data Sheets
Genre der Quelle: Zeitschrift
 Urheber:
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Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 189 Artikelnummer: - Start- / Endseite: 224 - 234 Identifikator: -