Investigating the astrophysically important Ex = 2.646 MeV state in 20 Na


Journal Article

Observations of neon lines in the spectra of energetic novae have prompted a renewed look at explosive hydrogen burning. The 19Ne(p, γ)20Na reaction is expected to play a major role in the breakout of the hot CNO cycle to the rp-process, which can process CNO nuclei to heavier elements. The reaction rate is dominated by the lowest resonance in the 19Ne + p system, corresponding to the Ex = 2.646 MeV state in 20Na. A large variety of nuclear experimental techniques have been used to study this state; e.g. charge exchange reactions, β-delayed proton decay and radioactive beams. Their results have lead to a Jπ = 3+ assignment for this state [B. Brown et al., Phys. Rev. C 48 (1993) 1456], allowing an estimate of the proton width (Γp). This leaves the gamma width (Γγ) to be determined. We have performed 20Ne(3He, experiments to measure the branching ratio ( Γγ Γ) of the Ex = 2.646 MeV excited state in 20Na. © 1995.

Full Text

Duke Authors

Cited Authors

  • Hofstee, MA; Blackmon, JC; Champagne, AE; Bateman, NPT; Parker, PD; Yildiz, K; Young, BM; Vogelaar, RB; Smith, MS; Howard, AJ

Published Date

  • May 5, 1995

Published In

Volume / Issue

  • 99 / 1-4

Start / End Page

  • 346 - 348

International Standard Serial Number (ISSN)

  • 0168-583X

Digital Object Identifier (DOI)

  • 10.1016/0168-583X(95)00307-X

Citation Source

  • Scopus