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Manuscript Title: Kinematical parameters of nuclear reactions.
Authors: A. Wolfram, C.F. Moore, W.R. Coker
Program title: NUCLEAR SPECTRA
Catalogue identifier: ABOM_v1_0
Distribution format: gz
Journal reference: Comput. Phys. Commun. 2(1971)443
Programming language: Fortran.
Computer: CDC 6600.
Operating system: UT-2.
RAM: 78K words
Word size: 60
Peripherals: magnetic tape.
Keywords: Nuclear physics, Reaction kinematics Energy spectrum, Nuclear masses, Level scheme, Nuclear reactions, Reaction products, Mass excess, Excitation energy, Level spin, Q-value, Level parity.
Classification: 17.8.

Subprograms used:
Cat Id Title Reference
AAA0_v1_0 DATA FOR ABOM CPC 2(1971)443

Nature of problem:
The program calculates various parameters of nuclear reactions: given the charge and mass of the projectile, target, and emitted nuclei of interest, the incident energy and the laboratory angle at which reaction products are observed, the program calculates the energy, inverse velocity, and momentum of the final reaction products as well as the Q-value of the reaction at the given reaction angle. The program also outputs the specific residual nuclear states excited.

Solution method:
The program does a classical relativistic calculation to obtain the kinetic energy of the emitted nucleus and the Q-value of a specified nuclear reaction. The calculations are based on first principles of conservation of energy and momentum and are accurate to the number of significant bits in the computer word length. A complete library of data on nuclear levels is available to and used by the program.

Execution is faster if targets are considered in order of ascending mass number, A. The code can accomodate only four hundred individual reactions per data set unless the fields in which the relevant parameters are stored are enlarged.

Running time:
The running time for a calculation involving one projectile incident at one energy on four targets with five nuclei emitted at one angle is 14 seconds.