First measurements of spin-dependent double-differential cross sections and the Gerasimov-Drell-Hearn integrand from $^{3}\vec{He}\left ( \vec{\gamma }, n \right )pp$ at incident photon energies of 12.8 and 14.7 MeV
- Laskaris, G.
- Ye, Q.
- Lalremruata, B.
- Ye, Q. J.
- Ahmed, M. W.
- Averett, T.
- Deltuva, A.
- Dutta, D.
- Fonseca, A. C.
- Gao, H.
- Golak, Jacek
- Huang, M.
- Karwowski, H. J.
- Mueller, J. M.
- Myers, L. S.
- Peng, C.
- Perdue, B. A.
- Qian, X.
- Sauer, P. U.
- Skibiński, Roman
- Stave, S.
- Tompkins, J. R.
- Weller, H. R.
- Witała, Henryk
- Wu, Y. K.
- Zhang, Y.
- Zheng, W.
Publication date
January 2013
DOI Publisher
American Physical Society (APS) Journal
Physical Review LettersAbstract
The first measurement of the three-body photodisintegration of longitudinally polarized $^{3}He$ with a circularly polarized $\gamma$-ray beam was carried out at the High Intensity $\gamma$-ray Source facility located at Triangle Universities Nuclear Laboratory. The spin-dependent double-differential cross sections and the contributions from the three-body photodisintegration to the $^{3}He$ Gerasimov-Drell-Hearn integrand are presented and compared with state-of-the-art three-body calculations at the incident photon energies of 12.8 and 14.7 MeV. The data reveal the importance of including the Coulomb interaction between protons in three-body calculations
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