Low-energy proton reactions of astrophysical interest in theA∼90–100 region

Abstract

Semimicroscopic optical potentials for low energy proton reactions in mass 90 − 100 region have been obtained by folding the density dependent M3Y interaction with relativistic mean field densities. Certain parameters in the potential have been deduced by comparing calculated results with the data for elastic scattering. Low energy proton reactions in this mass region have been studied in the formalism with success. Rates of important astrophysical reaction in the mass region have been calculated.

Neutron capture reactions near theN=82shell-closure

“…Käppeler et al [44] also used the 7 Li(p, n) 7 Be reaction to study the thermal neutron capture by Ce isotopes at 25 keV. They obtained a MACS value of 12.0±0.4 mb.…”

“…This method has been followed in a number of our recent works [4][5][6][7][8][9]. For example, in Chakraborty et al [9], this procedure has been utilized to study proton capture reactions, important for the astrophysical p-process in mass 110−125 region.…”

“…The reverse process, i.e., (n, γ) reactions may serve the purpose. For example, Dillmann et al [3] studied a number of (n, γ) reactions with neutrons from the 7 Li(p, n) 7 Be reaction to simulate a Maxwellian neutron distribution at 25 keV thermal energy. Neutron capture reactions have been studied in various methods.…”

Effects of NN potentials on p Nuclides in the A ∼100–120 region

“…In case of DDM3Y interaction, which is not obtained from the RMF theory, we folded it with RMF density from FSUGold. This FSUGold folded DDM3Y interaction have been used in earlier works [4][5][6][7][8] and successfully reproduced some astrophysically important cross sections and reaction rates in A ∼ 55-100 region. Therefore, we used this potential in A ∼ 100-120 region as an extension of earlier works.…”

“…This has the advantage of extending it to unknown mass regions. In some earlier works [4][5][6][7][8], this method has been used to study low energy proton reactions in the A ∼ 55-100 region. In a recent work [9], similar method has been used in 110-125 mass region.…”