Beryllium disintegration

The Op mechanism leads to proportionality between oxygen and beryllium abundances, for example, because these two elements arise from the same source, namely, type 11 supernovas, oxygen directly and beryllium indirectly (via collisional disintegration of oxygen into beryllium). A constant Be/0 ratio, independent of O/H, would be the hallmark of the Op mechanism. 

Gamma-ray from disintegration of beryllium by Deuterons and Protons) 3) K. Lark-Horowitz et al, PhysRev 48, 100(1935) (Gamma rays from nitrogen bombarded with Deuterons) 4) R.G. Herb et al, PhysRev 51, 691—98(1937) (Gamma rays from light... 

Fe beta particles are counted with a proportional detector or its gamma rays are analyzed with a Ge detector and spectrometer. The sample is then measured for Fe content with a thin Ge detector and spectrometer or xenon-filled X-ray proportional detector with a thin (e.g., 140 mg cm ) beryllium absorber. The Fe count rate is adjusted for background, the Fe contribution, self-absorption in the plated sample, and the chemical yield, and converted to the disintegration rate. The activity of both radioisotopes is corrected for radioactive decay from the sampling date. 

A convenient gamma emitter producing copious radiation with the energy above the 1.66-MeV threshold of beryllium but less than the 2.1-MeV threshold of D2O is Nearly 50% of its disintegrations pass... 

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