last modified: 01-DEC-1981 | catalog | categories | new | search |

NEA-0529 FANAL.

FANAL, Resonance Parameter by Multilevel Shape Analysis of Neutron Transmission Data

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1. NAME OR DESIGNATION OF PROGRAM:  FANAL.
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2. COMPUTERS
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Program name Package id Status Status date
FANAL NEA-0529/01 Tested 01-DEC-1981

Machines used:

Package ID Orig. computer Test computer
NEA-0529/01 IBM 3033 IBM 3033
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3. NATURE OF PHYSICAL PROBLEM SOLVED

Resonance parameter determination by multi-level shape analysis of neutron transmission data.
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4. METHOD OF SOLUTION

Simultaneous least-squares fit to several sets of time-of-flight (TOF) transmission data. Reich-Moore cross section formalism for s-wave, single-level Breit-Wigner formalism for p-, d-, ... wave resonances. Numerical resolution broadening.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

The code was written  for light and medium-mass or nearly magic nuclei, e.g. structural materials like iron, nickel, ... or lead. Doppler broadening is neglected for s-wave levels, level-level and resonant-potential interference for p-, d-, ... wave levels. The programme accepts up to 5 TOF data sets (which may differ with respect to sample thickness, energy range, flight path, instrumental resolution etc.), 200 cross section parameters (50 of them adjustable) and 5120 data points (with uncertainties). Gaussian resolution function.
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6. TYPICAL RUNNING TIME:  2 - 15 min. on IBM/370-168 for 3-4 iterations.
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7. UNUSUAL FEATURES OF THE PROGRAM

High speed due to hybrid resonance  formalism (see above under 4.). Automatic internal mesh determination. Conveniently structured input containing only physics information (no counters etc.). Change of resonance spins or parities requires only shuffling of cards, no repunching. One inelastic channel allowed.
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8. RELATED AND AUXILIARY PROGRAMS

KFK plot routine PLOTA must be replaced by similar subroutine (or dummy) outside KFK. Necessary instructions are given on comment cards.
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9. STATUS
Package ID Status date Status
NEA-0529/01 01-DEC-1981 Tested at NEADB
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10. REFERENCES

- F.H. Froehner:
  KFK 2129 (1976), KFK 2669 (1978).
- H. Beer and R.R. Spencer:
  KFK 2063 (1974).
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11. MACHINE REQUIREMENTS:  252 kbytes of core memory space.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NEA-0529/01 FORTRAN-IV
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13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED:  IBM OS, ASP.
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS
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15. NAME AND ESTABLISHMENT OF AUTHOR

      F.H. Froehner
      I.N.R.
      Kernforschungszentrum
      Postfach 3640
      D-7500 Karlsruhe West Germany
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16. MATERIAL AVAILABLE
NEA-0529/01
File name File description Records
NEA0529_01.001 INFORMATION 27
NEA0529_01.002 JOB CONTROL 72
NEA0529_01.003 FANAL FORTRAN SOURCE 1009
NEA0529_01.004 SAMPLE PROBLEM INPUT 199
NEA0529_01.005 SAMPLE PROBLEM OUTPUT 2361
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17. CATEGORIES
  • A. Cross Section and Resonance Integral Calculations

Keywords: Breit-Wigner formula, cross sections, least square fit, multilevel analysis, reich-moore formula, resonance scattering.