A new version of the Los Alamos (LA) model, based on more physical considerations than the previous versions by taking into account the sequential emission of prompt neutrons, is proposed. A residual temperature distribution for each emission sequence P\(_{\mathrm {k}}\)(T) is considered, so that this new version can provide the prompt neutron spectrum in the center-of-mass and laboratory frames of each neutron successively emitted from the light and heavy fragment. The LA model with sequential emission is applied on 15 fission cases which were not included in the 49 cases used in the elaboration of the systematics of different quantities of residual nuclei, on which the general form of \(\hbox {P}_{\mathrm {k}}\)(T) is based. The good description of experimental prompt neutron spectrum data of these fission cases by the model results constitutes a relevant validation of the LA model with sequential emission. Systematic behaviours of the average energies (in the center-of-mass and laboratory frames) provided by this model for each neutron sequentially emitted, are also emphasized.

中文翻译：

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将顺序发射包括在最可能的碎片化方法中（Los Alamos模型）及其验证

提出了一个新版本的洛斯阿拉莫斯（LA）模型，该模型基于比以前的版本更多的物理考虑，并考虑了迅速中子的连续发射。考虑了每个发射序列P \（_ {\ mathrm {k}} \）（T）的残余温度分布，因此该新版本可以在每个质心和实验室框架中提供迅速的中子光谱中子先后从轻和重碎片中发射出来。具有顺序发射的LA模型应用于15个裂变情况，这些情况不包括在拟订不同数量的剩余核的系统时所用的49个情况中，其中一般形式为\（\ hbox {P} _ {\ mathrm {k}} \）（T）为基础。通过模型结果对这些裂变情况的实验迅速中子谱数据的良好描述，构成了具有连续发射的LA模型的相关验证。还强调了由该模型为依次发射的每个中子提供的平均能量（在质心和实验室框架中）的系统行为。