Cross-sections for deuteron induced γ-ray emission analysis of light elements

Complete text of publication follows. With the aim of providing fundamental cross-section data for deuteron induced gamma ray emission analysis (DIGE), and eliminate the application of standards from routine analytical work, thin target gamma ray yields of the 6Li(d,pγ)7Li, 9Be(d,nγ)10B, 11B(d,pγ)12B, 16O(d,pγ)17O and 19F(d,pγ)20F nuclear reactions were measured in the 0-0.6 MeV energy range with fine energy resolution. The measurements were carried out on the 5 MV Van de Graaff accelerator of ATOMKI. Thin targets were made by vacuum evaporation or DC reactive magnetron sputtering. The chemical and thickness analysis of the targets were performed with Rutherford backscattering spectrometry (RBS) both with 2 MeV H+ and 2.5 MeV He+ focussed ion beams. Fitting an adequate function to the measured yields below 1 MeV, we extrapolated them to the 0 .6 MeV energy range and then converted data into cross-sections through a novel procedure. Values were calculated for the most dominant 478 keV (Li), 718 keV (Be), 953 keV and 1674 keV (B), 871 keV (O) and 656 keV (F) gamma lines. Results for boron are shown in Fig. 1 for demonstration. This kind of systematic and uniform cross-section data set for the accurate DIGE analysis of light elements has not been available in the literature in this extent. The presented cross-section curves are useful tools for the analysis of thin targets and serve as input parameters for the concentration calculus of thick and intermediate thick samples. The paper containing the details and final results is under publication [2]. (author)