Mass measurement on the rp-process waiting point 72Kr

Details Mass measurement on the rp-process waiting point 72Kr Mass measurement on the rp-process waiting point 72Kr

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005epjas..25...41r&link_type=abstract

The European Physical Journal A, Volume 25, Supplement, Issue 1, pp.41-43

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07.75.+H Mass Spectrometers, 21.10.Dr Binding Energies And Masses, 26.30.+K Nucleosynthesis In Novae, Supernovae And Other Explosive

Scientific paper

With the aim of improving nucleosynthesis calculations, we performed for the first time, a direct high-precision mass measurement on the waiting point in the astrophysical rp-process 72Kr. We used the ISOLTRAP Penning trap mass spectrometer located at ISOLDE/CERN. The measurement yielded a relative mass uncertainty of δm/m = 1.2×10-7. In addition, the masses of 73Kr and 74Kr were measured directly with relative mass uncertainties of 1.0×10-7 and 3×10-8, respectively. We analyzed the role of 72Kr in the rp-process during X-ray bursts using the ISOLTRAP and previous mass values of 72-74Kr.

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