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首页> 外文期刊>Physical review, C >Determining the average prompt-fission-neutron multiplicity for Pu-239(n, f) via a Pu-240(alpha, alpha'f) surrogate reaction
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Determining the average prompt-fission-neutron multiplicity for Pu-239(n, f) via a Pu-240(alpha, alpha'f) surrogate reaction

机译:通过PU-240(α,α'f)替代反应确定PU-239(N,F)的平均迅速裂变 - 中子多重性

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摘要

The average prompt-fission-neutron multiplicity (nu) over bar is of significance in the areas of nuclear theory, nuclear nonproliferation, and nuclear energy. In this work, the surrogate-reaction method has been used for the first time to indirectly determine (nu) over bar for Pu-239(n, f) via Pu-240(alpha, alpha'f) reactions. A Pu-240 target was bombarded with a beam of 53.9-MeV alpha particles. Scattered alpha particles, fission products, and neutrons were measured with the NeutronSTARS detector array. Values of (nu) over bar were obtained for a continuous range of equivalent incident neutron energies between 0.25 and 26.25 MeV, and the results agree well with direct neutron measurements.
机译:核理论,核不扩散和核能的平均迅速裂变 - 中子多数(NU)具有重要意义。 在这项工作中,使用PU-240(α,α'F)反应首次使用替代反应方法以间接地确定(NU)对PU-239(N,F)的棒。 用53.9meVα颗粒的光束轰击PU-240靶标。 用中光器探测器阵列测量散射的α颗粒,裂变产物和中子。 获得(Nu)上的杆的值,用于连续的等效入射中子能量范围为0.25和26.25meV,结果与直接中子测量相一致。

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