Computer Programs

PSR-0102 FERDO/FERD.

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

To submit a request, click below on the link of the version you wish to order. Rules for end-users are available here.

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.