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Prompt neutron multiplicity distributions inferred from gamma-ray and fission fragment energy measurements

机译:从伽马射线和裂变片段能量测量推断出迅速中子多重分布

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摘要

We propose a novel method to extract the prompt neutron multiplicity distribution, P(nu), in fission reactions based on correlations between prompt neutrons, gamma rays, and fragment kinetic energy arising from energy conservation. In this approach, only event-by-event measurements of the total gamma-ray energy released as a function of the total kinetic energy (TKE) of the fission fragments are performed, and no neutron detection is required. Using the CGMF fission event generator, we illustrate the method and explore the accuracy of extracting the neutron multiplicity distribution when taking into account the energy resolution and calibration of the energy measurements. We find that a TKE resolution of under 2 MeV produces reasonably accurate results, independent of typical gamma-ray energy measurement resolution.
机译:我们提出了一种新的方法,提取迅速中子多重分布,P(nu),基于节能中的迅速中子,伽马射线和片段动能之间的相关性。 在这种方法中,仅执行作为裂变片段的总动能(TKE)的函数的总伽马射线能量的逐个事件测量,并且不需要中子检测。 使用CGMF裂变事件发生器,我们说明了该方法,并在考虑能量测量的能量分辨率和校准时提取中子多重分布的准确性。 我们发现,2米以下的TKE分辨率产生合理准确的结果,与典型的伽马射线能量测量分辨率无关。

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