3Introduction My work consists: In analysing gamma spectrums from experiment with DEIMOS32…Experiment = measurement of radioactive sample (activated by activation method in a cyclotron) with different configurations…To get experimental cross-sectionsDifferent configurations = We measured the sample on one side then of the other one several times to make a statistical analysis and obtain a better precision of the results
4Spectrum analysis with DEIMOS32 Gamma lines peak analysis with the software DEIMOS 32
5Spectrum analysis with DEIMOS32 We’re able to plan possible reactions and isotopes produced
6Spectrum analysis with DEIMOS32 Comparison between the result tables from DEIMOS 32 analysis and the internet data base (decay data search) on gamma lines to identify the isotopes
7Spectrum analysis with DEIMOS32 4 isotopes found from (n,2n) to (n,4n) reactions and 1 isotope (198Au) found from (n,gamma) reaction.
8Cross-sections calculation Nyield calculation:Peak areaSelf-absorption correctionBeam correctionDead time correctionDecay during cooling and measurementγline intensityDetector efficiencyCorrection for coincidencesSquare-emitter correctionWeight normalizationDecay during irradiation
18Results Comments: Fluctuations are purely systematical Nyield-average isn’t depending on the configurationBut the difference of Nyield-average (calculated for each gamma line and isotope) is bigger than the uncertainty of weighted average. It comes from the systematic uncertainty of efficiency determination.