Updates on Analysis of Kinematically Complete Measurements of Three-body Photodisintegration of 3He

ORAL

Abstract

We report updates on the analysis of our cross-section data for the 3He($\gamma$,pn)p, 3He($\gamma$,pp)n, and 3He($\gamma$,p)np three-body (3B) photodisintegration reactions. The measurements were performed at the High Intensity $\gamma$-ray Source (HIGS) with a 15 MeV linearly polarized photon beam. The beam-target luminosity was determined in-situ using the 3He($\gamma$,p)d reaction. The experimental setup consisted of a collinear set of gas targets flanked by arrays of neutron detectors and collimated silicon strip detectors, allowing for measurements of a variety of kinematic configurations in 3B photodisintegration. The data are compared to ab-initio three-nucleon calculations via GEANT4 simulations of the experiment that include modeling neutron interactions in the liquid scintillator detectors.

*Supported in part by DOE grant DE-FG02-97ER41033 and the Polish national science center under grant DEC-2016/22/M/ST2/00173

Authors

  • Forrest Friesen

    • Duke University
    • Duke University, TUNL
  • Mohommad Ahmed

    • North Carolina Central University, TUNL
  • Alex Crowell

    • Duke University, TUNL
  • Arnas Deltuva

    • Vilnius University
  • Calvin Howell

    • Duke University, TUNL
  • Collin Malone

    • Duke University, TUNL
  • Ronald Malone

    • Duke University, TUNL
  • Werner Tornow

    • Duke University, TUNL
  • Henryk Witala

    • Jagiellonian University