Beta decay rates for nuclei with 115<A<140 for r-process nucleosynthesis

Understanding Beta Decay for the R Process

Gamow-Teller beta-decay rates for A <= 18 nuclei.

A comprehensive analysis is made of the experimental information on Gamow-Teller beta decay for the light (A & 18) nuclei. Experimental data on half-lives, Q values, and branching ratios are tabulated. Experimental log ft values and beta-decay matrix elements are deduced from these data. The one-body-transition densities necessary to predict the beta-decay matrix elements are then calculated us...

ASTROPHYSICAL NEUTRON CAPTURE RATES IN s– AND r–PROCESS NUCLEOSYNTHESIS

Astrophysical neutron capture rates of light and heavy nuclei have been measured and calculated. For the measurements the activation technique was applied at the 3.75 MV Karlsruhe Van de Graaff accelerator, and at the Geel electron linear accelerator (GELINA) the time–of–flight (TOF) method was used. The calculations were performed using direct and compound nuclear capture models.

b decay rates of r-process waiting-point nuclei in a self-consistent approach

J. Engel, M. Bender, J. Dobaczewski, W. Nazarewicz, and R. Surman Department of Physics and Astronomy, The University of North Carolina, CB 3255, Phillips Hall, Chapel Hill, North Carolina 27599 Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996 Institute of Theoretical Physics, Warsaw University, Hoża 69, PL-00681, Warsaw, Poland Joint Institute for Heavy ...

Beta decay studies of r - process nuclei at the National Superconducting Cyclotron Laboratory

J. Pereira∗a,b, A. Aprahamianc,d, O. Arndte, f , A. Becerrila,b, T. Elliota,b, A. Estradea,b,g, D. Galaviza,b, S. Hennriche, f ,a, R. Kesslere, f ,a, K.-L. Kratz f ,h, G. Lorussoa,b,g, P.F. Manticaa,i, M. Matosa,b, F. Montesa,b,g, P. Santia,b, B. Pfeiffer f ,h, M. Quinnc,d, H. Schatza,b,g, F. Schertze, f ,a, L. Schnorrenbergera,b, j, E. Smithb,k, B.E. Tomlina,i, W. Waltersl, A. Wöhrc,d aNationa...