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Mass Measurement of Cr-45 and its impact on the Ca-Sc Cycle in X-ray bursts

Abstract : Masses of neutron-deficient Ni-58 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 Cr-45 nucleus have been measured with a relative uncertainty of about 10(-6)-10(-7). The new Cr-45 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.
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http://hal.in2p3.fr/in2p3-00824941
Contributor : Christine Hadrossek <>
Submitted on : Wednesday, May 22, 2013 - 4:02:41 PM
Last modification on : Wednesday, September 16, 2020 - 4:17:29 PM

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X. L. Yan, H. S. Xu, Y.A. Litvinov, Y. H. Zhang, H. Schatz, et al.. Mass Measurement of Cr-45 and its impact on the Ca-Sc Cycle in X-ray bursts. Astrophysical Journal Letters, IOP Science, 2012, 766, pp.L8. ⟨10.1088/2041-8205/766/1/L8⟩. ⟨in2p3-00824941⟩

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