6533b85afe1ef96bd12b9e8f

RESEARCH PRODUCT

Neutron-rich isotopes around the r-process ?waiting-point? nuclei 29 79 Cu50 and 30 80 Zn50

Peter MöllerH.l. RavnA. WöhrH. GabelmannB. PfeifferKarl Kratz

subject

Nuclear physicsPhysicsNuclear and High Energy PhysicsIsotoper-processNuclear fusionPoint (geometry)NeutronAtomic physics

description

Beta-decay half-lives (T1/2) and delayed-neutron emission probabilities (Pn) of very neutron-rich Cu to As nuclei have been measured, among them the new isotopes77Cu48,79Cu50,81Zn51 and84Ga53. With the T1/2 and Pn-values of now four N ∼-50 ”waiting-point” nuclei known, our hypothesis that the r-process has attained a local β-flow equilibrium araound A∼-80 is further strengthened.

https://doi.org/10.1007/bf01290331