The three-body photodisintegration of He3 has been measured with the CLAS detector at Jefferson Lab, using tagged photons of energies between 0.35 GeV and 1.55GeV. The large acceptance of the spectrometer allowed us for the first time to cover a wide momentum and angular range for the two outgoing protons. Three kinematic regions dominated by either two- or three-body contributions have been distinguished and analyzed. The measured cross sections have been compared with results of a theoretical model, which, in certain kinematic ranges, have been found to be in reasonable agreement with the data.
Physical Review C
Niccolai, S.; Biselli, Angela; and CLAS Collaboration, "Complete measurement of three-body photo-disintegration of 3He for photon energies between 0.35 GeV and 1.55 GeV" (2004). Physics Faculty Publications. 87.
S. Niccolai et al. [CLAS Collaboration], "Complete measurement of three-body photo-disintegration of 3He for photon energies between 0.35 GeV and 1.55 GeV", Phys. Rev. C 70, 064003 (2004) DOI: 10.1103/PhysRevC.70.064003