TY  - JOUR
AU  - Zhang, P.
AU  - Xu, X.
AU  - Shuai, P.
AU  - Chen, R. J.
AU  - Yan, X. L.
AU  - Zhang, Y. H.
AU  - Wang, M.
AU  - Litvinov, Yury
AU  - Blaum, K.
AU  - Xu, H. S.
AU  - Bao, T.
AU  - Chen, X. C.
AU  - Chen, H.
AU  - Fu, C. Y.
AU  - He, J. J.
AU  - Kubono, S.
AU  - Lam, Y. H.
AU  - Liu, D. W.
AU  - Mao, R. S.
AU  - Ma, X. W.
AU  - Sun, M. Z.
AU  - Tu, X. L.
AU  - Xing, Y. M.
AU  - Yang, J. C.
AU  - Yuan, Y. J.
AU  - Zeng, Q.
AU  - Zhou, X.
AU  - Zhou, X. H.
AU  - Zhan, W. L.
AU  - Litvinov, S.
AU  - Audi, G.
AU  - Uesaka, T.
AU  - Yamaguchi, Y.
AU  - Yamaguchi, T.
AU  - Ozawa, A.
AU  - Sun, B. H.
AU  - Sun, Y.
AU  - Xu, F. R.
TI  - High-precision Q<sub>EC</sub> values of superallowed 0<sup>+</sup> → 0<sup>+</sup> β-emitters <sup>46</sup>Cr, <sup>50</sup>Fe and <sup>54</sup>Ni
JO  - Physics letters / B
VL  - 767
SN  - 0370-2693
CY  - Amsterdam
PB  - North-Holland Publ.
M1  - GSI-2018-00147
SP  - 20 - 24
PY  - 2017
N1  - Open Access funded by SCOAP³ - Sponsoring Consortium for Open Access Publishing in Particle Physics "Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3."
AB  - Short-lived 46 Cr, 50 Fe and 54 Ni were studied by isochronous mass spectrometry at the HIRFL-CSR facility in Lanzhou. The measured precision mass excesses (ME) of 46Cr, 50Fe and 54Ni are −29471(11) keV, −34477(6) keV and −39278(4) keV, respectively. The superallowed 0+ → 0+ β-decay Q values were derived to be Q EC (46 Cr) = 7604(11) keV, Q EC (50 Fe) = 8150(6) keV and Q EC (54 Ni) = 8731(4) keV. The values for 50Fe and 54Ni are by one order of magnitude more precise than the adopted literature values. By combining the existing half-lives and branching ratios, we obtained the corrected Ft values to be Ft(50Fe) = 3103(70) s and Ft(54Ni) = 3076(50) s. The main contribution to the Ft uncertainties is now due to β-decay branching ratios, still, more high-precision measurements of the half-lives, the masses, and especially the branching ratios are needed in order to satisfy the requirements for a stringent CVC test.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000397861700004
DO  - DOI:10.1016/j.physletb.2017.01.039
UR  - https://repository.gsi.de/record/208764
ER  -