for pointing out this oversight. 2+ 1+ 3+ 0+ 4+ 3+ 2+ 1+ 5+ 2+ 3+ 0+ 1+ 2+ 3+ 4+ 2+ 1+ 3+ 4+ 2+ 3+ 0+ 4+ 2+ 1+ 4+ 3+ 1+ 2+ 1+ (2+) 1+ 1+ 151 516 924 2114 14(2) 7.7(13) 2(2) 63(15) 0 4.39 (12) 4.84 (12) 4.03 (14) 30 Na SDPF-M USD Intruder Normal 365(9) 410(6) 775(1) 1597(5) 1963(5) 2114(4) I% log ft 30 Ne P 1n =12.6(35); P 2n =8.9(23) S n = 2.375(28) MeV Q β =14.74(57) MeV t 1/2 = 7.3(3) ms 0+ 151(78) FIG. 3. (Color online) Experimental and theoretical level schemes for 30 Na (for MCSM, levels from 0 + -4 + only are shown). Energies are in keV. Spin assignments for the observed states and the absolute intensities for the γ transitions (in %) are indicated. 0556-2813/2007/76(4)/049902(1) 049902-1
Abstract. Atomic masses play a crucial role in many nuclear astrophysics calculations. The lack of experimental values for relevant exotic nuclides triggered a rapid development of new mass measurement devices around the world. The Timeof-Flight (TOF) mass measurements offer a complementary technique to the most precise one, Penning trap measurements [1], the latter being limited by the rate and half-lives of the ions of interest. The NSCL facility provides a well-suited infrastructure for TOF mass measurements of very exotic nuclei. At this facility, we have recently implemented a TOF-Bρ technique and performed mass measurements of neutron-rich nuclides in the Fe region, important for r-process calculations and for calculations of processes occurring in the crust of accreting neutron stars.
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