NEA-1020 CADE.

CADE, Multiple Particle Emission Cross-Sections by Weisskopf-Ewing Theory

NAME OR DESIGNATION OF PROGRAM, COMPUTER, DESCRIPTION OF PROGRAM OR FUNCTION, METHOD OF SOLUTION, RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM, TYPICAL RUNNING TIME, UNUSUAL FEATURES OF THE PROGRAM, RELATED AND AUXILIARY PROGRAMS, STATUS, REFERENCES, MACHINE REQUIREMENTS, LANGUAGE, OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED, OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHORS, MATERIAL, CATEGORIES

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1. NAME OR DESIGNATION OF PROGRAM: CADE.

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2. COMPUTERS

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Program name	Package id	Status	Status date
CADE	NEA-1020/01	Tested	28-JUL-1992

Machines used:

Package ID	Orig. computer	Test computer
NEA-1020/01	IBM 3081	Many Computers

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3. DESCRIPTION OF PROGRAM OR FUNCTION

CADE calculates reaction cross sections for multi-particle emission. The total cross section for the emission of a particle at any particular stage is calculated together with the cross section as a function of energy. The probability of leaving the final nucleus in a state of any particular energy is also obtained.

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4. METHOD OF SOLUTION

The program performs compound nucleus calculations using the Weisskopf-Ewing formalism. Multi-particle emissions are treated as a series of stages in a cascade. The relevant compound nucleus absorption cross sections for particle channels are calculated with built-in optical model routines. The gamma-ray emission is described by the giant dipole resonance formalism.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM:

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6. TYPICAL RUNNING TIME:

NEA-1020/01

NEA-DB compiled the program on IBM 3090 and VAX 8810 computers and executed the test case included in this package. Execution times required were: 2 seconds (IBM); and 12 seconds (VAX)

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7. UNUSUAL FEATURES OF THE PROGRAM

Several choices for the final nucleus level density formula may be made using the leval density routine contained in the program.

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8. RELATED AND AUXILIARY PROGRAMS:

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9. STATUS

Package ID	Status date	Status
NEA-1020/01	28-JUL-1992	Tested at NEADB

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10. REFERENCES:

NEA-1020/01, included references:

- D. Wilmore:
  CADE - A Computer Programme for Calculation of Nuclear
  Cross-Sections from Weisskopf-Ewing Theory.
  AERE-R11515  (December 1984).

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11. MACHINE REQUIREMENTS:

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
NEA-1020/01	FORTRAN-IV

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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:

NEA-1020/01

MVS/XA (IBM 3090); VMS V5.4-2 (VAX 8810).

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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:

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15. NAME AND ESTABLISHMENT OF AUTHORS

          D. Wilmore
          Theoretical Physics Division
          Atomic Energy Research Establishment
          HARWELL, United Kingdom

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16. MATERIAL AVAILABLE

NEA-1020/01

File name	File description	Records
NEA1020_01.001	Information file	120
NEA1020_01.002	CADE.FOR CADE FORTRAN source	1138
NEA1020_01.003	DA01A.FOR Harwell subroutine DA01A source	48
NEA1020_01.004	IBM.JCL IBM JCL	106
NEA1020_01.005	VAX.JCL VAX JCL	11
NEA1020_01.006	INPUT.DAT Sample input data	30
NEA1020_01.007	CADEIBM.OUT Sample output from IBM	554
NEA1020_01.008	CADEVAX.OUT Sample output from VAX	422

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17. CATEGORIES

A. Cross Section and Resonance Integral Calculations

Keywords: compound nuclei, nuclear cascades, nuclear reactions, nuclear structure, optical models, reaction kinetics.