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تسجيل مستخدم جديدAnalysis of possible systematic errors in the Oslo method
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In this work, we have reviewed the Oslo method, which enables the simultaneous extraction of level density and gamma-ray transmission coefficient from a set of particle-gamma coincidence data. Possible errors and uncertainties have been investigated. Typical data sets from various mass regions as well as simulated data have been tested against the assumptions behind the data analysis.
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In this paper we present the first systematic analysis of the impact of the populated vs. intrinsic spin distribution on the nuclear level density and $gamma$-ray strength function retrieved through the Oslo Method. We illustrate the effect of the sp
in distribution on the recently performed $^{239}mathrm{Pu}$(d,p$gamma$)$^{240}mathrm{Pu}$ experiment using a 12 MeV deuteron beam performed at the Oslo Cyclotron Lab. In the analysis we couple state-of-the-art calculations for the populated spin-distributions with the Monte-Carlo nuclear decay code RAINIER to compare Oslo Method results to the known input. We find that good knowledge of the populated spin distribution is crucial and show that the populated distribution has a significant impact on the extracted nuclear level density and $gamma$-ray strength function for the $^{239}mathrm{Pu}$(d,p$gamma$)$^{240}mathrm{Pu}$ case.
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