NEA-0529 FANAL.

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

NAME OR DESIGNATION OF PROGRAM, COMPUTER, NATURE OF PHYSICAL PROBLEM SOLVED, 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 OR MONITOR UNDER WHICH PROGRAM IS EXECUTED, OTHER RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHOR, MATERIAL, CATEGORIES

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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.