Photoelectric disintegration of 16O

TL;DR

This paper estimates the photoelectric cross section of 16O, predicts angular distributions, and highlights the dominance of E2 excitation near the alpha-particle threshold, aiding future experimental investigations.

Contribution

It provides theoretical estimates and predictions for the photoelectric cross section and angular distribution of 16O, emphasizing the E2 excitation dominance.

Findings

Photoelectric cross section of 16O is larger than the radiative capture cross section.

E2 excitation dominates just above the alpha-particle threshold.

Predicted angular distribution for future experiments.

Abstract

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.