CAPMULT, the counting efficiency for electron capture by a KLMN four-shell model

Abstract
We present a new more advanced program to compute the liquid scintillation counting efficiency for pure electron capture nuclides. We consider a KLMN four-shell model with 262 different ways of atomic rearrangement, which permits one to improve the accuracy of the method for nuclides of large atomic numbers.

Title of program: CAPMULT
Catalogue Id: ADBH_v1_0

Nature of problem
The computation of the liquid scintillation counting efficiency for electron capture nuclides (EC) requires the determination of the atomic pathways that follow the capture of one electron by the nucleus. The large number of different ways of atomic rearrangement in the daughter nuclide makes necessary the use of shell models in which subshells are averaged. A KLM three-shell model involves only 22 pathways, but it is inaccurate for nuclides of high atomic numbers. We propose a more advanced mod ...

Versions of this program held in the CPC repository in Mendeley Data
ADBH_v1_0; CAPMULT; 10.1016/0010-4655(95)00017-A

This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)

**摘要**
本工作提出一款用于计算纯电子俘获核素（electron capture nuclides）液体闪烁计数效率（liquid scintillation counting efficiency）的新型高级程序。本研究采用包含262种原子重排（atomic rearrangement）方式的KLMN四壳层模型（KLMN four-shell model），可有效提升针对大原子序数核素的计算精度。

**程序名称**：CAPMULT
**目录编号**：ADBH_v1_0

**问题本质**
电子俘获核素（electron capture nuclides, EC）的液体闪烁计数效率计算，需确定原子核俘获单电子后发生的原子跃迁路径。子体核素（daughter nuclide）中存在大量不同的原子重排方式，因此必须采用对亚壳层（subshell）进行平均化处理的壳层模型。传统KLM三壳层模型（KLM three-shell model）仅包含22种跃迁路径，但对于高原子序数核素的计算精度欠佳。本研究提出更为先进的模……

**Mendeley数据集中收录于《计算机物理学报》（Computer Physics Communications, CPC）程序库的本程序版本**：ADBH_v1_0; CAPMULT; 10.1016/0010-4655(95)00017-A

本程序源自贝尔法斯特女王大学（Queen's University Belfast）馆藏的CPC程序库（1969-2019年）