TheK-Fluorescence Yield of Germanium

Abstract

The K-Fluorescence Yield cox of Germanium has been measured using the coincidence method and investigating the decay of V4As. The branching ratios of this decay had to be measured and all relevant determining values, as detection efficiencies, absorption coefficients etc. The experimental results are P~coK = 0.494_+ 0.012 and OK = 0.561 +0.015 using PK=0.881 +0.003. For the branching ratios of the decay of 74As we obtained

Approaches for theoretical and experimental determinations ofK-shell decay rates and fluorescence yields in Ge

“…Regarding the available experimental results, we notice that the ones by Pahor et al [16], Hartl et al [17], and Brunner [19] agree with our results; the relative differences to the measured value in this work being 0.1%, 1.5%, and 3.8%, respectively. TABLE III.…”

“…The remaining values by Krause [22], Hubbell et al [23], and Walters et al [4] lie outside the above-mentioned region. This work 0.553 ± 0.013 0.547 Pahor et al [16] 0 .554 ± 0.003 McGuire et al [3] 0.558 Kostroun et al [24] 0.545 Walters et al [4] 0.534 Bambynek et al [5] 0.540 Hartl et al [17] 0 .561 ± 0.015 Krause [22] 0.535 Casnati et al [18] 0 .549 ± 0.011 Brunner [19] 0 .532 ± 0.016 Pious et al [20] 0 .538 ± 0.029 Hubbell et al [23] 0.523 Durak et al [21] 0 .537 ± 0.03…”

“…Despite these efforts, the available experimental and theoretical fluorescence yield data for some elements are scarce or were obtained several decades ago, calling for further efforts to update values with high precision measurements and state-of-the-art calculations. One of these elements is germanium, for which available data include the experimental works of Pahor et al [16], Hartl et al [17], Casnati et al [18], Brunner [19], Pious et al [20], and Durak et al [21]; the semi-empirical data of Bambynek et al [5], Krause [22] and Hubbell et al [23]; and the nonrelativistic calculations of McGuire [3], Walters et al [4], and Kostroun et al [24]. Hence, the most recent experimental data were obtained 12 years ago and the last theoretical values were published more than 40 years ago.…”