Shell-model studies of therpreaction35Ar(p,γ

Abstract

We present results for levels in 36 K (the mirror of nucleus 36 Ar) that are used in rp reaction rate calculations. The levels are also determined from the Isobaric Mass Multiplet Equation and the binding energies of the T=1 analog states as a check on the assignment of spins and parity. Where the analog states are not known the levels are calculated with two-body interactions that use the sd-shell interactions USDA and USDB as the charge-independent parts, with a Coulomb, chargedependent and charge-asymmetric Hamitonian added. The gamma-decay lifetimes and 35 Al to 36 K spectroscopic factors are calculated with the same interactions, and together with experimental information on the levels of excited states, are used to determine the 35 Ar(p,γ) 36 K reaction rates.

21+ to 31+ γ width in Na22Triambak1, Phuthu2, Garcı́a3 et al. 2017Phys. Rev. CSelf Cite7120View full textAdd to dashboardCite

“…On using the USDBcdpn interaction [41], the shell model calculation predicts the width of the transition to be dominated by its M 1 component, with an E2/M 1 mixing ratio δ ∼ 0.02. However, the 22 Na nucleus is known to have a large deformation (β ∼ 0.5), with well established rotational bands [42][43][44][45][46].…”

Angle-integrated measurements of the 26Al (d, n)27Si reaction cross section: a probe of spectroscopic factors and astrophysical resonance strengths

“…[30], and "cdpn" refers to the addition of the Coulomb, charge-dependent and chargeasymmetric nuclear Hamiltonian obtained by Ormand and Brown in a proton-neutron basis [31]. These Hamiltonians have been used for a series of (p, γ) rate calculations in the sd shell [32][33][34][35][36]. For the negative-parity states we use the 1hω basis introduced in ref.…”

Shell-model studies of the astrophysicalrpreaction29P(p,γ)Richter1, Brown2 2013Phys. Rev. CSelf Cite

“…In previous papers we have successfully used this method to predict energies and confirm spin assignments for the levels in the T z = −1 nuclei 26 Si [3] and 36 K [8]. Our initial plan was to use Eq.…”