The scheme for \(\beta^{-}\) decays suggests that all \(g^{+}\) particles in the nucleus are susceptible to radioactive decay when bombarded with photons of high enough energy. And that all nuclei with \(g^{+}\) particles can decay. The nucleus collapses with the release of a electron or positron.
The resulting nucleus set up is unstable.
Photons destroy everything except nuclei without \(g^{+}\) particles, ie. hydrogen. So, the only effective sun block is hydrogen.
