The Two-Body Photodisintegration Reaction ^4He(γ,p)^3H between 22 and 30 MeV

Details The Two-Body Photodisintegration Reaction ^4He(γ,p)^3H between 22 and 30 MeV The Two-Body Photodisintegration Reaction ^4He(γ,p)^3H between 22 and 30 MeV

Nov 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aps..dnp.da002r&link_type=abstract

American Physical Society, 2010 Fall Meeting of the APS Division of Nuclear Physics, November 2-6, 2010, abstract #DA.002

Physics

Nuclear Physics

Scientific paper

The ^4nucleus is often considered as the link between the classical few-body systems and more complex nuclei. Only recently it became possible to calculate the photoabsorption cross section of ^4with realistic nucleon-nucleon potential models. However, the experimental situation is still as controversial as it was a quarter century ago. Using TUNL's HIGS facility, the two-body photodisintegration cross section of ^4He into a proton and triton was measured between 22 and 30 MeV in 0.5 MeV energy steps. High-pressure ^4He/Xe gas scintillators of various compositions served as targets and detectors. Pure Xe gas scintillators were used for background measurements. A NaI detector was employed for the incident photon flux determination. Our data are in fairly good agreement with recent theoretical calculations of the Trento group [1], but differ significantly from the majority of the previous data, including the recent data of Shima et al. [2] obtained with mono-energetic photon beams and a time-projection chamber. [4pt] [1] S. Quaglioni et al., Phys. Rev. C 69, 044002 (2004). [0pt] [2] T. Shima et al., Phys. Rev. C 72, 044004 (2005).

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