Angular correlation of x rays: L-M cascades of plutonium

Angular correlations between L and M x rays in 239Pu obtained from a radioactive source of 32-yr 243Cm were measured using Si(Li) and Ge(Li) detectors. The measured angular-correlation coefficients A22 = (8.5 plus-or-minus 1.5) times 10-2 for the Lβ1-M cascade and A22 = (7.7 plus-or-minus 2.0) times 10-2 for the Lα1/sub +//sub 2/-M cascade are both significantly higher than theoretical predictions. The intensity of the Pu L1-L3 x ray per L1 vacancy was found to be I (L1-L3) / GAMMA (L1) = (6.6 plus-or-minus 0.8) times 10-2. The angular correlation coefficient of the Lα- (L1-L3) x-ray cascade was measured and found to be A22 = (3 plus-or-minus 7) times 10-2 and is in