Programs in Physics & Physical Chemistry
|[Licence| Download | New Version Template] abgs_v1_0.gz(9 Kbytes)|
|Manuscript Title: A computer program for determination of nuclear parameters from internal conversion experiments.|
|Authors: M. Rysavy, O. Dragoun|
|Program title: CFIT|
|Catalogue identifier: ABGS_v1_0|
Distribution format: gz
|Journal reference: Comput. Phys. Commun. 19(1980)93|
|Programming language: Fortran.|
|Computer: IBM 370/135.|
|Operating system: OS/VS1, OS/ES4.1M4.|
|RAM: 13K words|
|Word size: 32|
|Keywords: Nuclear physics, Internal conversion, Transition, Penetration effect, Multipole mixture, Least-squares method, Data experimental, Activity detection.|
Nature of problem:
The program analyzes the experimental data on gamma-ray internal conversion and determines the multipolarity mixing parameter and penetration parameter of the magnetic component for the nuclear electromagnetic transitions.
The best values of the parameters are found by the least-squares method. Due to the nonlinearity of the problem, the Gauss linearization method is used. The iterations are performed until the change in the least- squares sum is less than 0.1%. If this condition is not fulfilled within 100 iterations, the execution is terminated. All operations are performed using double precision.
For a particular nuclear transition, a maximum of 25 experimental data items can be treated simultaneously. The program is not suitable for studying the hindered E1 transitions.
The running time depends mostly on the guess values of the parameters (given via input) and is typically 1 to 3 s per transition analyzed.
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