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Manuscript Title: Distorted wave Born approximation for nuclear reactions.
Authors: T. Tamura, W.R. Coker, F. Rybicki
Program title: DWBA-VENUS
Catalogue identifier: ABOH_v1_0
Distribution format: gz
Journal reference: Comput. Phys. Commun. 2(1971)94
Programming language: Fortran.
Computer: CDC 6600.
Operating system: UT1.
Program overlaid: yes
RAM: 44K words
Word size: 60
Peripherals: magnetic tape.
Keywords: Nuclear physics, Stripping and pickup, Inelastic scattering, Schrodinger equation, Direct reaction, Dwba, Transition amplitude, Spin-orbit coupling, Zero-range, Direct interaction, Differential Cross section, Particle-gamma Correlation, Clebsch-gordan Coefficient, Racah coefficient, None-j symbol, Statistical tensors, Form factor, Bound state, Collective excitation.
Classification: 17.11.

Revision history:
Type Tit le Reference
correction 000A CORRECTION 01/03/72 See below

Nature of problem:
The program DWBA-VENUS assembles the quantities needed to compute the transition amplitude for a given direct nuclear reaction in the distorted-wave Born approximation. The principle parts of the transition amplitude other than angular momentum and kinematic factors involve the radial wave functions of entrance and exit channels, obtained by solving the radial Schrodinger equation numerically with appropriate optical potentials including spin-orbit coupling; and, a form factor, either a single particle bound state radial wave function or a dervivative of an optical potential. the bound state wave function is obtained by solving the radial Schrodinger equation for a state of given binding energy in a real Woods-Saxon potential with spin-obit coupling.

Solution method:
The Stormer method is used to solve the Schrodinger equation. The Stromer method with from two five points can be used. The method used to obtain the regular and irregular Coulomb functions is similar to that used by Buck et al. The various angular momentum coefficients required are evaluated from the exact analytic expressions. The DWBA amplitude is evaluated in the form given by Satchler.

Restrictions:
The zero-range approxiomation is used, so that the cross sections are realistic only for inelastic scattering and for transfer reactions with light projectiles. The number of partial waves in a given channel is limited by dimension statements to 100. Also the product (2sa+1) (2sb+1)(j+sa+sb+1) must be <=55, where sa and sb are the incident and exit projectile spins, and j is the total angular momentum transfer.

CORRECTION SUMMARY
Manuscript Title: Distorted wave Born approximation for nuclear reactions. (C.P.C. 2(1971)94).
Authors: T. Tamura, W.R. Coker, F. Rybicki
Program title: 000A CORRECTION 01/03/72
Catalogue identifier: ABOH_v1_0
Distribution format: gz
Journal reference: Comput. Phys. Commun. 3(1972)275
Classification: 17.11.