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Manuscript Title: Fortran code of the projected shell model: feasible shell model calculations for heavy nuclei.
Authors: Y. Sun, K. Hara
Program title: PSM_EE, PSM_EO, PSM_OE, PSM_OO
Catalogue identifier: ADGJ_v1_0
Distribution format: gz
Journal reference: Comput. Phys. Commun. 104(1997)245
Programming language: Fortran.
Computer: PC Pentium/133MHz.
Operating system: UNIX, Windows 95, LINUX, DOS.
RAM: 16M words
Word size: 32
Keywords: Projected shell model, Configuration mixing, Rotational symmetry, Deformed nuclei, Spectroscopic calculations, Nuclear high-spin states.
Classification: 17.19.

Nature of problem:
These Fortran codes confrom with the framework of the Projected Shell Model. The theory is a genuine shell model configuration mixing approach but requires only a very small configuration space. This feature enables us to interpret numerical results in simple physical terms. The present code allows detailed spectroscopic calculations for low- and high-spin states in axially deformed nuclei.

Solution method:
Starting from the Nilsson+BCS procedure, the shell model truncation is done in the multi-quasiparticle basis by selecting low-lying states. The rotational symmetry is then restored for these multi-quasiparticle states by the projection method to form a spherical (many-body) basis in the laboratory frame. Finally, the Hamiltonian is diagonalized in this basis. The large part of numerical effort is devoted to the second step, where rotational matrix elements are calculated for each integration mesh.

Running time:
1.5 minutes on Pentium/133MHz (DOS)

References:
[1] K. Hara and Y. Sun, Int. J. Mod. Phys. E4 (1995) 637