last modified: 28-JUL-1992 | catalog | categories | new | search |

NEA-1020 CADE.

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

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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.