$\beta$-decay half-life of $^{70}$Kr : a bridge nuclide for the rp process beyond A = 70
- Oinonen, M.
- Aystoe, J.
- Jokinen, A.
- Baumann, P.
- Didierjean, F.
- Huck, A.
- Knipper, A.
- Ramdhane, M.
- Walter, G.
- Van Duppen, P.
- Huyse, M.
- Marguier, G.
- Novikov, Yu.
- Popov, A.
- Seliverstov, D M.
- Schatz, H.
DOIAbstract
Matière NucléaireThe $\beta$-decay half-life of $^{7 }$Kr has been measured for the first time at the ISOLDE PSB Facility at CERN. Mass separated $^{7 }$Kr ions were produced by 1 GeV proton induced spallation reactions in a Nb foil. The measured half-life is 57(21) ms. This value is consistent with the half-life calculated assuming a pure Fermi decay, but is clearly lower than the value used in a recent rp-process reaction flow calculation. The result shows that the reaction flow via two-proton-capture of $^{68}$Se is 2.5 times faster than previously calculated assuming an astrophysical temperature of 1.5 GK and a density of 1 $^{6}$ g/cm$^{3}$
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