• DOI:10.1007/s10509-013-1580-5
• Corpus ID: 118588406

The nuclear structure and associated electron capture rates on odd-Z nucleus 51V in stellar matter

@article{Rahman2013TheNS,
  title={The nuclear structure and associated electron capture rates on odd-Z nucleus 51V in stellar matter},
  author={Muneeb-ur Rahman and Jameel-Un Nabi},
  journal={Astrophysics and Space Science},
  year={2013},
  volume={348},
  pages={427-435}
}

• Muneeb-ur Rahman, J. Nabi
• Published 13 August 2013
• Physics
• Astrophysics and Space Science

The Gamow-Teller strength distribution function, B(GT), for the odd Z parent 51V, N−Z=5, up to 30 MeV of excitation energy in the daughter 51Ti is calculated in the domain of proton-neutron Quasiparticle Random Phase Approximation (pn-QRPA) theory. The pn-QRPA results are compared against other theoretical calculations, (n, p) and high resolution (d, 2He) reaction experiments. For the case of (d, 2He) reaction the calibration was performed for 0≤Ej≤5.0 MeV, where the authors stressed that within this excitation energy range the ΔL=0 transition strength can be extracted with high accuracy for 51V. Within this energy range the current pn-QRPA total B(GT) strength 0.79 is in good agreement with the (d, 2He) experiment’s total strength of 0.9±0.1. The pn-QRPA calculated Gamow-Teller centroid at 4.20 MeV in daughter 51Ti is also in good agreement with high resolution (d, 2He) experiment which placed the Gamow-Teller centroid at 4.1±0.4 MeV in daughter 51Ti. The low energy detailed Gamow-Teller structure and Gamow-Teller centroid play a sumptuous role in associated weak decay rates and consequently affect the stellar dynamics. The stellar weak rates are sensitive to the location and structure of these low-lying states in daughter 51Ti. The calculated electron capture rates on 51V in stellar matter are also in good agreement with the large scale shell model rates.