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PSR-0102 FERDO/FERD.

FERDO/FERD, Unfolding of Pulse-Height Spectrometer Spectra

NAME OR DESIGNATION OF PROGRAM, COMPUTER, DESCRIPTION OF PROBLEM 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 AUTHOR, MATERIAL, CATEGORIES
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1. NAME OR DESIGNATION OF PROGRAM:  FERDO/FERD.
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2. COMPUTERS
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Program name Package id Status Status date
FERDO/FERD PSR-0102/02 Tested 24-MAY-1985

Machines used:

Package ID Orig. computer Test computer
PSR-0102/02 IBM 3033 IBM 3081
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3. DESCRIPTION OF PROBLEM OR FUNCTION

FERDO and FERD are unfolding codes which can be used to correct observed pulse-height distributions for the non-ideal response of a pulse-height spectrometer or to solve poorly conditioned linear equations.
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4. METHOD OF SOLUTION

It is assumed that the response of the spectrometer is given by Ax = b, where A is the spectrometer response function matrix, x is the unknown spectrum, and b is the pulse-height distribution. FERDO does not resolve directly for x but instead solves for p = Wx, where W is a "window function matrix". Typically, W is the resolution function of an ideal spectrometer which has a single Gaussian response. The effective resolution of the unfolding solution may be varied by the choice of  W. Confidence intervals are found for each element of the solution p.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM:
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6. TYPICAL RUNNING TIME:
PSR-0102/02
NEA-DB executed the test case included in the package on IBM 3081K. The CPU required for compilation, linking and execution was less than 10 seconds.
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7. UNUSUAL FEATURES OF THE PROGRAM:
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8. RELATED AND AUXILIARY PROGRAMS:
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9. STATUS
Package ID Status date Status
PSR-0102/02 24-MAY-1985 Tested at NEADB
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10. REFERENCES:
PSR-0102/02, included references:
- B.W. Rust, D.T. Ingersoll and W.R. Burrus:
  A User's Manual for FERDO and FERD Unfolding Codes.
  ORNL/TM-8720  (September 1983)
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11. MACHINE REQUIREMENTS:
PSR-0102/02
Less than 280K bytes of IBM 3081K main storage.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
PSR-0102/02 FORTRAN-IV
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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:
PSR-0102/02
MVS-SP (IBM 3081K).
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:
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15. NAME AND ESTABLISHMENT OF AUTHOR

    B.W. Rust, D.T. Ingersoll, W.R. Burrus
    Engineering Physics Division
    Oak Ridge National Laboratory
    Oak Ridge, Tennessee, U. S. A.
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16. MATERIAL AVAILABLE
PSR-0102/02
File name File description Records
PSR0102_02.001 INFORMATION FILE 56
PSR0102_02.002 FERDO SOURCE PROGRAM (CARD IMAGES) 1539
PSR0102_02.003 FERD SOURCE PROGRAM (CARD IMAGES) 1685
PSR0102_02.004 JCL TO RUN TEST CASE 22
PSR0102_02.005 FERDO/FERD TEST CASE INPUT DATA 701
PSR0102_02.006 FERDO TEST CASE PRINTED OUTPUT 493
PSR0102_02.007 FERD TEST CASE PRINTED OUTPUT 363
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17. CATEGORIES
  • O. Experimental Data Processing

Keywords: spectra unfolding, spectrometers.