last modified: 13-FEB-2002 | catalog | categories | new | search |

NESC9554 ZZ-REAC2.

ZZ REAC-2, Nuclide Activation and Transmutation

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1. NAME OR DESIGNATION OF PROGRAM:  REAC2.
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2. COMPUTERS
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Program name Package id Status Status date
ZZ-REAC-2 NESC9554/01 Arrived 13-FEB-2002

Machines used:

Package ID Orig. computer Test computer
NESC9554/01 CRAY 1
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3. DESCRIPTION OF PROGRAM OR FUNCTION



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


  Flux library

  ============



  FORMAT: special format



  NUMBER OF GROUPS: 63 group fluxes



NUCLIDES: H, He, Li, Be, B, C, N, O, F, Ne, Na, Mg, Al, Si, P, S, Cl, Ar, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, As, Se, Br, Kr, Rb, Sr, Y, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Cd, In, Sn, Sb, Te, I, Xe, Cs, Ba, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, W, Re, Os, Ir, Pt, Au, Hg, Tl, Pb, Bi, Po.



  ORIGIN: Fred Mann (Westinghouse, Hanford)



  WEIGHTING SPECTRUM: --





  Cross Section library

  =====================



  FORMAT: special format



  NUMBER OF GROUPS: 63 group cross section



NUCLIDES: H, He, Li, Be, B, C, N, O, F, Ne, Na, Mg, Al, Si, P, S, Cl, Ar, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, As, Se, Br, Kr, Rb, Sr, Y, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Cd, In, Sn, Sb, Te, I, Xe, Cs, Ba, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, W, Re, Os, Ir, Pt, Au, Hg, Tl, Pb, Bi, Po.



  ORIGIN: Fred Mann (Westinghouse, Hanford)



  WEIGHTING SPECTRUM: --





  Decay Data library

  ==================



  FORMAT: special format



  NUMBER OF GROUPS: --



NUCLIDES: H, He, Li, Be, B, C, N, O, F, Ne, Na, Mg, Al, Si, P, S, Cl, Ar, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, As, Se, Br, Kr, Rb, Sr, Y, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Cd, In, Sn, Sb, Te, I, Xe, Cs, Ba, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, W, Re, Os, Ir, Pt, Au, Hg, Tl, Pb, Bi, Po.



    ORIGIN: Fred Mann (Westinghouse, Hanford)



  WEIGHTING SPECTRUM: --



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

   REAC2  calculates the change in composition of materials in a

radiation field and related activation quantities. It is best suited to problems where many variables (e.g. materials, facilities or locations within facilities, powerhistories) are to be investigated. Where very accurate results are needed, the user must access the accuracy of the cross section base (e.g. source, flux weighting) as in the use of any neutronics code.

REAC2 consists of three programs - SREAC, SLSTCOM, and SLIB. SREAC calculates the transmutation of nuclides in a radiation field. SLSTCOM reads the output file produced by SREAC and produces listings of abundances, decay rates, dose rates, heating rates, etc. in a user-specified file format. SLIB converts one or more card-image format libraries into binary form for program use.

Two auxiliary codes, LISTCRS and LISTDCY, are included to edit the cross section and decay binary data files, respectively.
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4. METHOD OF SOLUTION

The spectrum-averaged cross section is obtained by collapsing the multigroup cross sections with the multigroup flux. The equations used assume that the cross sections are for a point in space and ignore the spatial transport of material and the  time dependence of the cross sections. In order to provide a fast, stable solution to the transmutation equation, REAC2 lessens the couplings between nuclides implied by the transmutation equation. The code assumes that during any time period of arbitrary length (1) the flux is constant as a function of time, (2) no reaction occurs on a reaction product or a decay product, and (3) at most six decays can occur for a reaction product or the initial nuclide. Using these assumptions, REAC2 calculates exactly the resulting distribution of  nuclides. Once the distribution is known, other quantities of interest such as the decay rate, dose rate, transmutations, etc. can be calculated from a linear combination of the nuclide amounts.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

REAC2 is not optimized for problems where fission products are important.
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6. TYPICAL RUNNING TIME:
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7. UNUSUAL FEATURES OF THE PROGRAM

REAC2 uses structured programming  techniques to enhance reliability and ease of expansion. It is designed so that only a limited amount of input is required.
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8. RELATED AND AUXILIARY PROGRAMS

REAC2 is an outgrowth of the REAC code. It is an order of magnitude faster, includes new cross section and decay libraries, allows more flexible input, and produces more individualized output.
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9. STATUS
Package ID Status date Status
NESC9554/01 13-FEB-2002 Masterfiled Arrived
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10. REFERENCES:
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11. MACHINE REQUIREMENTS:
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NESC9554/01 FORTRAN-77
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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:  CTSS (Cray1), UNICOS (Cray X-MP).
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:
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15. NAME AND ESTABLISHMENT OF AUTHORS

          F.M. Mann
          Westinghouse Hanford Company
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16. MATERIAL AVAILABLE
NESC9554/01
miscellaneous    mag tapeTape contents description                  MISTP
source program   mag tapeSubroutine library Fortran source          SRCTP
source program   mag tapeSREAC Fortran source                       SRCTP
source program   mag tapeSLSTCOM Fortran source                     SRCTP
source program   mag tapeSLIB Fortran source                        SRCTP
symb data lib    mag tapeMaterial library of alloys and compounds   LBSTP
symb data lib    mag tapeMaterial library of isotopes               LBSTP
symb data lib    mag tapePMaterial library of elements              LBSTP
symb data lib    mag tapeFlux library containing 63-group fluxes    LBSTP
symb data lib    mag tape63-group cross section library             LBSTP
symb data lib    mag tapeDecay data library                         LBSTP
source program   mag tapeREAC2 compilation notes                    SRCTP
report           mag tapeREAC2 machine-readable documentation       REPTP
test-case data   mag tapeControl information to execute REAC2       DATTP
source program   mag tapeUPDATE comdecks machine-independent subrou.SRCTP
source program   mag tapeUPDATE comdecks machine-specific subrou.   SRCTP
source program   mag tapeUPDATE MFE-spec. subroutines UPDATE source SRCTP
source program   mag tapeUPDATE LANL-spec. subroutines UPDATE sourceSRCTP
source program   mag tapeI/O Suboutines UPDATE source               SRCTP
source program   mag tapeInteger I/O Subroutines UPDATE source      SRCTP
source program   mag tapeStack Subroutines UPDATE source            SRCTP
source program   mag tapeUtility Subroutines UPDATE source          SRCTP
test-case data   mag tapeControl information to create SLDR         DATTP
source program   mag tapeSLIB UPDATE source part 1                  SRCTP
source program   mag tapeSLIB UPDATE source part 2                  SRCTP
source program   mag tapeSLIB UPDATE source part 3                  SRCTP
source program   mag tapeSLIB UPDATE source part 4                  SRCTP
test-case data   mag tapeControl information to create SLIB         DATTP
source program   mag tapeSLSTCOM UPDATE source part 1               SRCTP
source program   mag tapeSLSTCOM UPDATE source part 2               SRCTP
source program   mag tapeSLSTCOM UPDATE source part 3               SRCTP
source program   mag tapeSLSTCOM UPDATE source part 4               SRCTP
source program   mag tapeSLSTCOM UPDATE source part 5               SRCTP
source program   mag tapeSLSTCOM UPDATE source part 6               SRCTP
source program   mag tapeSLSTCOM UPDATE source part 7               SRCTP
test-case data   mag tapeControl information to create SLSTCOM      DATTP
source program   mag tapeSREAC UPDATE source part 1                 SRCTP
source program   mag tapeSREAC UPDATE source part 2                 SRCTP
source program   mag tapeSREAC UPDATE source part 3                 SRCTP
source program   mag tapeSREAC UPDATE source part 4                 SRCTP
source program   mag tapeSREAC UPDATE source part 5                 SRCTP
source program   mag tapeSREAC UPDATE source part 6                 SRCTP
source program   mag tapeSREAC UPDATE source part 7                 SRCTP
source program   mag tapeSREAC UPDATE source part 8                 SRCTP
test-case data   mag tapeControl information to create SREAC        DATTP
source program   mag tapeLISTCRS UPDATE source                      SRCTP
source program   mag tapeLISTDCY UPDATE source                      SRCTP
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17. CATEGORIES
  • Z. Data.

Keywords: activation analysis, cross sections, decay, isotopes, materials, radiation effects, transmutation.