PROGRAM SUMMARY
Title of program:
EMI2
Catalogue identifier:
ADKR
Ref. in CPC:
123(1999)114
Operating system: MS-DOS
High speed store required:
30K words
Number of bits in a word:
32
Number of lines in distributed program, including test data, etc:
1514
Programming language used: Fortran
Computer: IBM with 80386 processor
Other versions of this program:
Cat. Id. Title Ref. in CPC ACPU EMI 79(1994)115
Nature of physical problem:
The standardization of electron capture (EC) nuclides in liquid
scintillation detectors is never 100 per cent efficient, depending on
several factors such as ionization or chemical quench. A complete
description of the EC process is not possible to achieve due to the
large number of involved atomic rearrangement pathways. In the first
version of the program EMI, an oversimplified KLM model of only 22
pathways was applied. However, a better accuracy in the
standardizations, especially for nuclides of low atomic numbers,
requires one to include Coster-Kronig transitions, and therefore
Li-subshells.
Method of solution
The atomic rearrangement process for the KL1L2L3M model is described by
a set of 264 different equations. This number suggests the convenience
of a code for computing all equations.
Restrictions on the complexity of the problem
We assume that the five M subshells are averaged. The atomic
rearrangement for M and higher shells is not considered.
Typical running time
The test run requires about 15 s on a Pentium II PC.