Computer Programs

DLC-0100 ZZ-ELECSPEC.

DLC-0100 ZZ-ELECSPEC.

ZZ ELECSPEC, Electron Spectra Data Library from Fission Product Decay

NAME, COMPUTER, PROBLEM, CPU, AUXILIARIES, STATUS, REFERENCES, REQUIREMENTS, LANGUAGE, OPERATING SYSTEM, AUTHOR, MATERIAL, CATEGORIES

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1. NAME

ZZ-ELECSPEC.

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2. COMPUTERS

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Program name	Package id	Status	Status date
ZZ-ELECSPEC	DLC-0100/01	Tested	18-FEB-1985

Machines used:

Package ID	Orig. computer	Test computer
DLC-0100/01	DEC PDP-10	DEC VAX 11/780

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3. DESCRIPTION

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
FORMAT: --

NUMBER OF GROUPS: --

NUCLIDES: More than 500 radionuclides created during or after thermal fission.

ORIGIN: This compilation is completely referenced and includes data available in the reviewed literature up to January 1982.

WEIGHTING SPECTRUM: --

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
The data library consists of electron spectra following decay of individual fission products in the atomic mass range 71 < A < 163. Data are given for more than 500 radionuclides created during or after thermal fission. The data include transition energies, absolute intensities, and shape parameters when known. An "average" beta-ray energy is given for fission products lacking experimental information on transition energies and intensities. For fission products having partial or incomplete decay information, the available data are utilized to provide best estimates of otherwise unknown decay schemes. The data file is from the evaluation of Dickens.

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6. TYPICAL RUNNING TIME

DLC-0100/01

The test case of BETASP was executed by NEA-DB on VAX-11/780 in 2 seconds of CPU time.

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8. RELATED OR AUXILIARY PROGRAMS

BETASP is utilized to read up to eleven records of information from the file of data, and from these to compute both a beta-ray and an antineutrino spectrum. After reading the appropriate data records for the selected radionuclide proton number and isotope mass, the program calculates the total response, including forbidden shapes for up to 3d-forbidden unique and up to 2d-forbidden non-unique if known parameters are included in the data table. The results are in number-per-bin-width.

A sample main program is included to demonstrate the call to the BETASP routine to compute the beta-ray and antineutrino spectrum for 90Y.

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9. STATUS

Package ID	Status date	Status
DLC-0100/01	18-FEB-1985	Tested at NEADB

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10. REFERENCES

DLC-0100/01, included references:

- J.K. Dickens:
  Electron Spectra from Decay of Fission.  ORNL/TM-8285 (Sept. 1982)
- J.K. Dickens:
  "Calculated Beta-Ray Spectra from Decay of Fission Products
  Produced by Thermal-Neutron Fission of U-235". Reprint from
  Physics Letters, 113B, 201-204(1982)
- J.K. Dickens:
  "Electron Antineutrino Spectra for U-235(n,f)".  Reprint from
  Physical Rewiew Letters, 46, 1061-1064(1981)

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11. HARDWARE REQUIREMENTS

To run the test case of BETASP included in the package on VAX-11/780, 35,332 bytes of main storage are required.

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
DLC-0100/01	FORTRAN-IV

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13. SOFTWARE REQUIREMENTS

The test case of BETASP was executed on VAX-11/780 under VMS 3.4.

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15. NAME AND ESTABLISHMENT OF AUTHORS

Contributed by: Radiation Safety Information Computational Center
                Oak Ridge National Laboratory
                Oak Ridge, Tennessee, U. S. A.
Developed by:   Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA

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16. MATERIAL AVAILABLE

DLC-0100/01

File name	File description	Records
DLC0100_01.003	ZZ-ELECSPEC INFORMATION FILE	43
DLC0100_01.004	ZZ-ELECSPEC DATA LIBRARY (FORMATTED)	2528
DLC0100_01.005	BETASP SOURCE PROGRAM	235
DLC0100_01.006	BETASP TEST CASE OUTPUT	119

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17. CATEGORIES

ZZZ. ARCHIVE

Keywords: beta spectra, data library, decay, electron spectra, fission products.