Photodisintegration cross section of the reaction (4)He(γ,p)(3)H between 22 and 30 MeV.

Journal Article (Journal Article)

The two-body photodisintegration cross section of (4)He into a proton and triton was measured with monoenergetic photon beams in 0.5 MeV energy steps between 22 and 30 MeV. High-pressure (4)He-Xe gas scintillators of various (4)He/Xe ratios served as targets and detectors. Pure Xe gas scintillators were used for background studies. A NaI detector together with a plastic scintillator paddle was employed for determining the incident photon flux. Our comprehensive data set follows the trend of the theoretical calculations of the Trento group very well, although our data are consistently lower in magnitude by about 5%. However, they differ significantly from the majority of the previous data, especially from the recent data of Shima et al. The latter data had put into question the validity of theoretical approaches used to calculate core-collapse supernova explosions and big-bang nucleosynthesis abundances of certain light nuclei.

Full Text

Duke Authors

Cited Authors

  • Raut, R; Tornow, W; Ahmed, MW; Crowell, AS; Kelley, JH; Rusev, G; Stave, SC; Tonchev, AP

Published Date

  • January 25, 2012

Published In

Volume / Issue

  • 108 / 4

Start / End Page

  • 042502 -

PubMed ID

  • 22400829

Electronic International Standard Serial Number (EISSN)

  • 1079-7114

International Standard Serial Number (ISSN)

  • 0031-9007

Digital Object Identifier (DOI)

  • 10.1103/physrevlett.108.042502


  • eng