Elsevier Science Home
Computer Physics Communications Program Library
Full text online from Science Direct
Programs in Physics & Physical Chemistry
CPC Home

[Licence| Download | New Version Template] aara_v1_0.gz(12 Kbytes)
Manuscript Title: A program for calculation of the Coriolis effect in odd-odd nuclei.
Authors: Z. Hons, J. Kvasil
Program title: ODDODDCORI
Catalogue identifier: AARA_v1_0
Distribution format: gz
Journal reference: Comput. Phys. Commun. 24(1981)161
Programming language: Fortran.
Computer: CDC 6500.
Operating system: NOS/BE 1.
RAM: 32K words
Word size: 60
Keywords: Nuclear physics, Collective model, Energy level, Deformed nuclei, Odd-odd nuclei, Coriolis effect, Fitting.
Classification: 17.20.

Subprograms used:
Cat Id Title Reference
ACWH_v1_0 MINUIT CPC 10(1975)343

Nature of problem:
Many papers have been devoted recently to particle-rotational coupling (Coriolis effect) in odd deformed nuclei, when the experimental spectrum could be often explained by this coupling. Therefore, one can expect that the Coriolis coupling plays, as well, a significant role in odd-odd deformed nuclei for which a lot of experimental data appeared lately. The program makes it possible to extract pure intrinsic energy values from experimental data. This is important for testing the theoretical models for intrinsic structure of odd-odd nuclei. The program calculates the perturbed energy levels. It is written as a subroutine to be used with the MINUIT minimization program, which makes a least-square fit to the experimental energy levels. Mixed amplitudes of the wave functions are obtained for the final fit.

Solution method:
In order to take the Coriolis coupling into account, the matrix of the total Hamiltonian is constructed and diagonalized. The Jacobi diagonalization method is used repeatedly in the search for eigenvalues and coupling and amplitudes for all spin values. Simultaneously, the adjustment of all the parameters is carried out until a least-square fit to the experimental energy levels is obtained.