English

The thermonuclear rate for the 19F(a,p)22Ne reaction at stellar temperatures

Nuclear Experiment 2008-11-26 v1

Abstract

The 19^{19}F(α\alpha,p)22^{22}Ne reaction is considered to be one of the main sources of fluorine depletion in AGB and Wolf-Rayet stars. The reaction rate still retains large uncertainties due to the lack of experimental studies available. In this work the yields for both exit channels to the ground state and first excited state of 22^{22}Ne have been measured and several previously unobserved resonances have been found in the energy range Elab_{lab}=792-1993 keV. The level parameters have been determined through a detailed R-matrix analysis of the reaction data and a new reaction rate is provided on the basis of the available experimental information.

Keywords

Cite

@article{arxiv.0803.0540,
  title  = {The thermonuclear rate for the 19F(a,p)22Ne reaction at stellar temperatures},
  author = {Claudio Ugalde and Richard Azuma and Aaron Couture and Joachim Görres and Hye-Young Lee and Edward Stech and Elizabeth Strandberg and Wanpeng Tan and Michael Wiescher},
  journal= {arXiv preprint arXiv:0803.0540},
  year   = {2008}
}

Comments

Accepted for publication in Phys Rev. C