Photoelectric disintegration of 16O
  The photoelectric cross section of $^{16}$O($\gamma$,$\alpha$)$^{12}$C is estimated to be larger than the radiative capture cross section of $^{12}$C($\alpha$ ,$\gamma$)$^{16}$O. The predicted cross section and the angular distribution of $\alpha$-particle are illustrated for the future experiment. The cross section just above the $\alpha$-particle threshold is found to be dominated by the $E$2 excitation. 
M. Katsuma
nucl-th nucl-ex