MATXS FILE DESCRIPTION

The following description of the MATXS format uses the standard CCCC form. It was copied from the comment cards at the start of the MATXSR module of NJOY 91.0. A detailed description of the MATXS format is here.

C***********************************************************************
C               PROPOSED 09/09/77                                      -
C                       (MODIFIED 09/80)                               -
C                       (NOMENCLATURE CHANGED 06/88)                   -
C                       (MODIFIED FOR CONST SUB-BLOCKS 06/90)          -
C                       (ORDERING CHANGED 10/90)                       -
C                                                                      -
CF           MATXS                                                     -
CE           MATERIAL CROSS SECTION FILE                               -
C                                                                      -
CN                       THIS FILE CONTAINS CROSS SECTION              -
CN                       VECTORS AND MATRICES FOR ALL                  -
CN                       PARTICLES, MATERIALS, AND REACTIONS;          -
CN                       DELAYED NEUTRON SPECTRA BY TIME GROUP;        -
CN                       AND DECAY HEAT AND PHOTON SPECTRA.            -
C                                                                      -
CN           FORMATS GIVEN ARE FOR FILE EXCHANGE ONLY                  -
C                                                                      -
C***********************************************************************
C
C
C-----------------------------------------------------------------------
CS          FILE STRUCTURE                                             -
CS                                                                     -
CS              RECORD TYPE                       PRESENT IF           -
CS              ==============================    ===============      -
CS              FILE IDENTIFICATION                 ALWAYS             -
CS              FILE CONTROL                        ALWAYS             -
CS              SET HOLLERITH IDENTIFICATION        ALWAYS             -
CS              FILE DATA                           ALWAYS             -
CS                                                                     -
CS   *************(REPEAT FOR ALL PARTICLES)                           -
CS   *          GROUP STRUCTURES                    ALWAYS             -
CS   *************                                                     -
CS                                                                     -
CS   *************(REPEAT FOR ALL MATERIALS)                           -
CS   *          MATERIAL CONTROL                    ALWAYS             -
CS   *                                                                 -
CS   * ***********(REPEAT FOR ALL SUBMATERIALS)                        -
CS   * *        VECTOR CONTROL                      N1DB.GT.0          -
CS   * *                                                               -
CS   * * *********(REPEAT FOR ALL VECTOR BLOCKS)                       -
CS   * * *      VECTOR BLOCK                        N1DB.GT.0          -
CS   * * *********                                                     -
CS   * *                                                               -
CS   * * *********(REPEAT FOR ALL MATRIX BLOCKS)                       -
CS   * * *      MATRIX CONTROL                      N2D.GT.0           -
CS   * * *                                                             -
CS   * * * *******(REPEAT FOR ALL SUB-BLOCKS)                          -
CS   * * * *    MATRIX SUB-BLOCK                    N2D.GT.0           -
CS   * * * *******                                                     -
CS   * * *                                                             -
CS   * * *      CONSTANT SUB-BLOCK                  JCONST.GT.0        -
CS   * * *                                                             -
CS   *************                                                     -
C                                                                      -
C-----------------------------------------------------------------------
C
C
C-----------------------------------------------------------------------
CR           FILE IDENTIFICATION                                       -
C                                                                      -
CL    HNAME,(HUSE(I),I=1,2),IVERS                                      -
C                                                                      -
CW    1+3*MULT                                                         -
C                                                                      -
CB    FORMAT(4H OV ,A8,1H*,2A8,1H*,I6)                                 -
C                                                                      -
CD    HNAME         HOLLERITH FILE NAME  - MATXS -  (A8)               -
CD    HUSE          HOLLERITH USER IDENTIFIATION    (A8)               -
CD    IVERS         FILE VERSION NUMBER                                -
CD    MULT          DOUBLE PRECISION PARAMETER                         -
CD                       1- A8 WORD IS SINGLE WORD                     -
CD                       2- A8 WORD IS DOUBLE PRECISION WORD           -
C                                                                      -
C-----------------------------------------------------------------------
C
C
C-----------------------------------------------------------------------
CR           FILE CONTROL                                              -
C                                                                      -
CL    NPART,NTYPE,NHOLL,NMAT,MAXW,LENGTH                               -
C                                                                      -
CW    6                                                                -
C                                                                      -
CB    FORMAT(4H 1D ,4I6)                                               -
C                                                                      -
CD    NPART       NUMBER OF PARTICLES FOR WHICH GROUP                  -
CD                   STRUCTURES ARE GIVEN                              -
CD    NTYPE       NUMBER OF DATA TYPES PRESENT IN SET                  -
CD    NHOLL       NUMBER OF WORDS IN SET HOLLERITH                     -
CD                    IDENTIFICATION RECORD                            -
CD    NMAT        NUMBER OF MATERIALS ON FILE                          -
CD    MAXW        MAXIMUM RECORD SIZE FOR SUB-BLOCKING                 -
CD    LENGTH      LENGTH OF FILE                                       -
C                                                                      -
C-----------------------------------------------------------------------
C
C
C-----------------------------------------------------------------------
CR           SET HOLLERITH IDENTIFICATION                              -
C                                                                      -
CL    (HSETID(I),I=1,NHOLL)                                            -
C                                                                      -
CW    NHOLL*MULT                                                       -
C                                                                      -
CB    FORMAT(4H 2D ,8A8/(9A8))                                         -
C                                                                      -
CD    HSETID      HOLLERITH IDENTIFICATION OF SET (A8)                 -
CD                 (TO BE EDITED OUT 72 CHARACTERS PER LINE)           -
C                                                                      -
C-----------------------------------------------------------------------
C
C
C-----------------------------------------------------------------------
CR          FILE DATA                                                  -
C                                                                      -
CL    (HPRT(J),J=1,NPART),(HTYPE(K),K=1,NTYPE),(HMATN(I),I=1,NMAT),    -
CL   1(NGRP(J),J=1,NPART),(JINP(K),K=1,NTYPE,(JOUTP(K),K=1,NTYPE),     -
CL   2(NSUBM(I)I=1,NMAT),(LOCM(I),I=1,NMAT)                            -
C                                                                      -
CW    (NPART+NTYPE+NMAT)*MULT+2*NTYPE+NPART+2*NMAT                     -
C                                                                      -
CB    FORMAT(4H 3D ,8A8/(9A8))      HPRT,HTYPE,HMATN                   -
CB    FORMAT(12I6)                  NGRP,JINP,JOUTP,NSUBM,LOCM         -
C                                                                      -
CD    HPRT(J)     HOLLERITH IDENTIFICATION FOR PARTICLE J              -
CD                     N         NEUTRON                               -
CD                     G         GAMMA                                 -
CD                     P         PROTON                                -
CD                     D         DEUTERON                              -
CD                     T         TRITON                                -
CD                     H         HE-3 NUCLEUS                          -
CD                     A         ALPHA (HE-4 NUCLEUS)                  -
CD                     B         BETA                                  -
CD                     R         RESIDUAL OR RECOIL                    -
CD                               (HEAVIER THAN ALPHA)                  -
CD    HTYPE(K)     HOLLERITH IDENTIFICATION FOR DATA TYPE K            -
CD                     NSCAT     NEUTRON SCATTERING                    -
CD                     NG        NEUTRON INDUCED GAMMA PRODUCTION      -
CD                     GSCAT     GAMMA SCATTERING                      -
CD                     PN        PROTON INDUCED NEUTRON PRODUCTION     -
CD                       .          .                                  -
CD                       .          .                                  -
CD                       .          .                                  -
CD                     DKN       DELAYED NEUTRON DATA                  -
CD                     DKHG      DECAY HEAT AND GAMMA DATA             -
CD                     DKB       DECAY BETA DATA                       -
CD    HMATN(I)    HOLLERITH IDENTIFICATION FOR MATERIAL I              -
CD    NGRP(J)      NUMBER OF ENERGY GROUPS FOR PARTICLE J              -
CD    JINP(K)     TYPE OF INCIDENT PARTICLE ASSOCIATED WITH            -
CD                   DATA TYPE K.  FOR DK DATA TYPES, JINP IS 0.       -
CD    JOUTP(K)    TYPE OF OUTGOING PARTICLE ASSOCIATED WITH            -
CD                   DATA TYPE K                                       -
CD    NSUBM(I)    NUMBER OF SUBMATERIALS FOR MATERIAL I                -
CD    LOCM(I)     LOCATION OF MATERIAL I                               -
C                                                                      -
C-----------------------------------------------------------------------
C
C
C-----------------------------------------------------------------------
CR          GROUP STRUCTURE                                            -
C                                                                      -
CL    (GPB(I),I=1,NGR),EMIN                                            -
C                                                                      -
CC    NGR=NGRP(J)                                                      -
C                                                                      -
CW    NGRP(J)+1                                                        -
C                                                                      -
CB    FORMAT(4H 4D ,1P5E12.5/(6E12.5))                                 -
C                                                                      -
CD    GPB(I)      MAXIMUM ENERGY BOUND FOR GROUP I FOR PARTICLE J      -
CD    EMIN        MINIMUM ENERGY BOUND FOR PARTICLE J                  -
C                                                                      -
C-----------------------------------------------------------------------
C
C
C-----------------------------------------------------------------------
CR          MATERIAL CONTROL                                           -
C                                                                      -
CL    HMAT,AMASS,(TEMP(I),SIGZ(I),ITYPE(I),N1D(I),N2D(I),              -
CL   1LOCS(I),I=1,NSUBM)                                               -
C                                                                      -
CW    MULT+1+6*NSUBM                                                   -
C                                                                      -
CB    FORMAT(4H 6D ,A8,1H*,1P2E12.5/(2E12.5,5I6))                      -
C                                                                      -
CD    HMAT        HOLLERITH MATERIAL IDENTIFIER                        -
CD    AMASS       ATOMIC WEIGHT RATIO                                  -
CD    TEMP        AMBIENT TEMPERATURE OR OTHER PARAMETERS FOR          -
CD                    SUBMATERIAL I                                    -
CD    SIGZ        DILUTION FACTOR OR OTHER PARAMETERS FOR              -
CD                    SUBMATERIAL I                                    -
CD    ITYPE       DATA TYPE FOR SUBMATERIAL I                          -
CD    N1D         NUMBER OF VECTORS FOR SUBMATERIAL I                  -
CD    N2D         NUMBER OF MATRIX BLOCKS FOR SUBMATERIAL I            -
CD    LOCS        LOCATION OF SUBMATERIAL I                            -
C                                                                      -
C-----------------------------------------------------------------------
C
C
C-----------------------------------------------------------------------
CR          VECTOR CONTROL                                             -
C                                                                      -
CL    (HVPS(I),I=1,N1D),(NFG(I),I=1,N1D),(NLG(I),I=1,N1D)              -
C                                                                      -
CW    (MULT+2)*N1D                                                     -
C                                                                      -
CB    FORMAT(4H 7D ,8A8/(9A8))        HVPS                             -
CB    FORMAT(12I6)                    IBLK,NFG,NLG                     -
C                                                                      -
CD    HVPS(I)     HOLLERITH IDENTIFIER OF VECTOR                       -
CD                      NELAS     NEUTRON ELASTIC SCATTERING           -
CD                      N2N       (N,2N)                               -
CD                      NNF       SECOND CHANCE FISSION                -
CD                      GABS      GAMMA ABSORPTION                     -
CD                      P2N       PROTONS IN, 2 NEUTRONS OUT           -
CD                         .          .                                -
CD                         .          .                                -
CD                         .          .                                -
CD    NFG(I)      NUMBER OF FIRST GROUP IN BAND FOR VECTOR I           -
CD    NLG(I)      NUMBER OF LAST GROUP IN BAND FOR VECTOR I            -
C                                                                      -
C-----------------------------------------------------------------------
C
C
C-----------------------------------------------------------------------
CR          VECTOR BLOCK                                               -
C                                                                      -
CL    (VPS(I),I=1,KMAX)                                                -
C                                                                      -
CC    KMAX=SUM OVER GROUP BAND FOR EACH VECTOR IN BLOCK J              -
C                                                                      -
CW    KMAX                                                             -
C                                                                      -
CB    FORMAT(4H 8D ,1P5E12.5/(6E12.5))                                 -
C                                                                      -
CD    VPS(I)      DATA FOR GROUP BANDS FOR VECTORS IN BLOCK J.         -
CD                BLOCK SIZE IS DETERMINED BY TAKING ALL THE GROUP     -
CD                BANDS THAT HAVE A TOTAL LENGTH LESS THAN OR EQUAL    -
CD                TO MAXW.                                             -
C                                                                      -
C-----------------------------------------------------------------------
C
C
C-----------------------------------------------------------------------
CR        SCATTERING MATRIX CONTROL                                    -
C                                                                      -
CL    HMTX,LORD,JCONST,
CL   1(JBAND(L),L=1,NOUTG(K)),(IJJ(L),L=1,NOUTG(K))                    -
C                                                                      -
CW    MULT+2+2*NOUTG(K)                                                -
C                                                                      -
CB    FORMAT(4H 9D ,A8/(12I6))        HMTX,LORD,JCONST,                -
CB                                     JBAND,IJJ                       -
C                                                                      -
CD    HMTX        HOLLERITH IDENTIFICATION OF BLOCK                    -
CD    LORD        NUMBER OF ORDERS PRESENT                             -
CD    JCONST      NUMBER OF GROUPS WITH CONSTANT SPECTRUM              -
CD    JBAND(L)    BANDWIDTH FOR GROUP L                                -
CD    IJJ(L)      LOWEST GROUP IN BAND FOR GROUP L                     -
C                                                                      -
C-----------------------------------------------------------------------
C
C
C-----------------------------------------------------------------------
CR          SCATTERING SUB-BLOCK                                       -
C                                                                      -
CL    (SCAT(K),K=1,KMAX)                                               -
C                                                                      -
CC    KMAX=LORD TIMES THE SUM OVER ALL JBAND IN THE GROUP RANGE OF     -
CC            THIS SUB-BLOCK                                           -
C                                                                      -
CB    FORMAT(5H 10D ,1P5E12.5/(6E12.5))                                -
C                                                                      -
CW    KMAX                                                             -
C                                                                      -
CD    SCAT(K)     MATRIX DATA GIVEN AS BANDS OF ELEMENTS FOR INITIAL   -
CD                GROUPS THAT LEAD TO EACH FINAL GROUP.  THE ORDER     -
CD                OF THE ELEMENTS IS AS FOLLOWS:  BAND FOR P0 OF       -
CD                GROUP I, BAND FOR P1 OF GROUP I, ... , BAND FOR P0   -
CD                OF GROUP I+1, BAND FOR P1 OF GROUP I+1, ETC.  THE    -
CD                GROUPS IN EACH BAND ARE GIVEN IN DESCENDING ORDER.   -
CD                THE SIZE OF EACH SUB-BLOCK IS DETERMINED BY THE      -
CD                TOTAL LENGTH OF A GROUP OF BANDS THAT IS LESS THAN   -
CD                OR EQUAL TO MAXW.                                    -
CD                                                                     -
CD                IF JCONST.GT.0, THE CONTRIBUTIONS FROM THE JCONST    -
CD                LOW-ENERGY GROUPS ARE GIVEN SEPARATELY.              -
C                                                                      -
C-----------------------------------------------------------------------
C                                                                      -
C                                                                      -
C-----------------------------------------------------------------------
CR          CONSTANT SUB-BLOCK                                         -
C                                                                      -
CL    (SPEC(L),L=1,NOUTG(K)),(PROD(L),L=L1,NING(K))                    -
C                                                                      -
CC    L1=NING(K)-JCONST+1                                              -
C                                                                      -
CW    NOUTG(K)+JCONST                                                  -
C                                                                      -
CB    FORMAT(4H11D ,1P5E12.5/(6E12.5))                                 -
C                                                                      -
CD    SPEC        NORMALIZED SPECTRUM OF FINAL PARTICLES FOR INITIAL   -
CD                PARTICLES IN GROUPS L1 TO NING(K)                    -
CD    PROD        PRODUCTION CROSS SECTION (E.G., NU*SIGF) FOR         -
CD                INITIAL GROUPS L1 THROUGH NING(K)                    -
CD                                                                     -
CD         THIS OPTION IS NORMALLY USED FOR THE ENERGY-INDEPENDENT     -
CD         NEUTRON AND PHOTON SPECTRA FROM FISSION AND RADIATIVE       -
CD         CAPTURE USUALLY SEEN AT LOW ENERGIES.                       -
C                                                                      -
C-----------------------------------------------------------------------

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