Direct mass measurements beyond the proton drip-line

Details Direct mass measurements beyond the proton drip-line Direct mass measurements beyond the proton drip-line

2007-01-22

arxiv.org/abs/nucl-ex/0701030v1

Phys.Rev.Lett.100:012501,2008

Physics

Nuclear Physics

Nuclear Experiment

Scientific paper

10.1103/PhysRevLett.100.012501

First on-line mass measurements were performed at the SHIPTRAP Penning trap mass spectrometer. The masses of 18 neutron-deficient isotopes in the terbium-to-thulium region produced in fusion-evaporation reactions were determined with relative uncertainties of about $7\cdot 10^{-8}$, nine of them for the first time. Four nuclides ($^{144, 145}$Ho and $^{147, 148}$Tm) were found to be proton-unbound. The implication of the results on the location of the proton drip-line is discussed by analyzing the one-proton separation energies.

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