Mass measurement of 45Cr and its impact on the Ca–Sc cycle in X-ray bursts

Yan , X.L.; Xu, H.S.; Litivnov, Yuri; Zhang, Y.H.; Schatz, H.; Tu, X.L.; Blaum, Klaus; Zhou, X.H.; Sun, B.H.; He, J.J.; Sun, Y.; Wang, M.; Yuan, Y.J.; Xia, J.W.; Yang, J.C.; Audi, G.; Jia, G.B.; Hu, Z.G.; Ma, X.W.; Mao, R.S.; Mei, B.; Shuai, P.; Sun, Z.Y.; Wang, S.T.; Xiao, G.Q.; Xu, X.; Yamaguchi, T.; Yamaguchi, Y.; Zang, Y.D.; Zhao, H.W.; Zhao, T.C.; Zhang, W.; Zhan, W.L.

doi:10.1088/2041-8205/766/1/L8

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Mass measurement of ⁴⁵Cr and its impact on the Ca–Sc cycle in X-ray bursts

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Yan , X.L.
Institute of Modern Physics, Chinese Academy of Sciences;
Graduate University of Chinese Academy of Sciences;
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Litivnov, Yuri
Institute of Modern Physics, Chinese Academy of Sciences;
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;
GSI Helmholtzzentrum für Schwerionenforschung;

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Blaum, Klaus
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

Wang, M.
Institute of Modern Physics, Chinese Academy of Sciences;
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;
CSNSM-IN2P3-CNRS, Université de Paris Sud;

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Citation

Yan, X., Xu, H., Litivnov, Y., Zhang, Y., Schatz, H., Tu, X., et al. (2013). Mass measurement of ⁴⁵Cr and its impact on the Ca–Sc cycle in X-ray bursts. Astrophysical Journal, Letters, 766(1): L8, pp. 1-4. doi:10.1088/2041-8205/766/1/L8.

Cite as: https://hdl.handle.net/11858/00-001M-0000-000E-C9C9-D

Abstract

Masses of neutron-deficient ⁵⁸Ni projectile fragments have been measured at the HIRFL-CSR facility in Lanzhou, China employing the isochronous mass spectrometry technique. Masses of a series of short-lived T_z = –3/2 nuclides including the ⁴⁵Cr nucleus have been measured with a relative uncertainty of about 10^–6-10^–7. The new ⁴⁵Cr mass turned out to be essential for modeling the astrophysical rp-process. In particular, we find that the formation of the predicted Ca-Sc cycle in X-ray bursts can be excluded