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Commit | Line | Data |
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fe4da5cc | 1 | * |
2 | * $Id$ | |
3 | * | |
4 | * $Log$ | |
5 | * Revision 1.1.1.1 1995/10/24 10:21:15 cernlib | |
6 | * Geant | |
7 | * | |
8 | * | |
9 | #include "geant321/pilot.h" | |
10 | *CMZ : 3.21/02 29/03/94 15.41.38 by S.Giani | |
11 | *-- Author : | |
12 | SUBROUTINE GPHMFI | |
13 | C | |
14 | C *** CALCULATION OF PHOTO-FISSION AND PHOTOABSORBTION *** | |
15 | C *** CROSS SECTIONS IN CURRENT MATERIAL *** | |
16 | C *** THE ENERGY BINS OF THE CROSS SECTION TABLES ARE NOT FINE *** | |
17 | C *** ENOUGH IN ORDER TO ACCURATELY DESCRIBE THE RESONANCE *** | |
18 | C *** BEHAVIOUR OF PHOTOFISSION AND PHOTOABSORBTION. *** | |
19 | C *** THE PRESENT ROUTINE CALCULATES THE CROSS SECTIONS AT *** | |
20 | C *** TRACKING TIME *** | |
21 | C *** HMF 25-AUG-1989 RWTH AACHEN / NVE 11-MAY-1990 CERN GENEVA *** | |
22 | C | |
23 | C CALLED BY : GTGAMA | |
24 | C ORIGIN : H.FESEFELDT | |
25 | C | |
26 | #include "geant321/gcbank.inc" | |
27 | #include "geant321/gcjloc.inc" | |
28 | #include "geant321/gcmate.inc" | |
29 | #include "geant321/gconsp.inc" | |
30 | #include "geant321/gsecti.inc" | |
31 | #include "geant321/gctrak.inc" | |
32 | C | |
33 | DIMENSION CSGN(19),CSGF(19),EKFISS(19) | |
34 | SAVE CSGN,CSGF,EKFISS | |
35 | C | |
36 | C MEASURED CROSS SECTIONS ON U(238) IN MILLBARN, ENERGIES IN GEV. | |
37 | C | |
38 | DATA CSGN / 0., 12., 20., 46., 115., 260., 450., 520., | |
39 | + 400., 270., 200., 150., 120., 80., 55., 27., | |
40 | + 15., 1., 0./ | |
41 | DATA CSGF / 0., 0., 0., 14., 30., 65., 100., 130., | |
42 | + 150., 180., 180., 150., 120., 80., 55., 27., | |
43 | + 15., 1., 0./ | |
44 | DATA EKFISS/0.004,0.005,0.006,0.007,0.008,0.009,0.010,0.011, | |
45 | + 0.012,0.013,0.014,0.015,0.016,0.018,0.020,0.025, | |
46 | + 0.030,0.035,0.040/ | |
47 | C | |
48 | SIG=0. | |
49 | IF(JPFIS.LE.0) GOTO 90 | |
50 | IF(GEKIN.LE.EKFISS(1)) GOTO 90 | |
51 | IF(A.LT.230..OR.A.GT.240.) GOTO 90 | |
52 | C | |
53 | C A-DEPENDENCE, MEASURED AT THE MAXIMUM OF THE RESONANCE | |
54 | C | |
55 | Z43BA=-67.0+38.7*Z**(4./3.)/A | |
56 | IF(Z43BA.LE.0.) GOTO 90 | |
57 | C | |
58 | C ENERGY DEPENDENCE, AS TABULATED IN THE DATA STATEMENTS | |
59 | C | |
60 | DO 10 I=2,19 | |
61 | IF(GEKIN.LT.EKFISS(I)) GOTO 20 | |
62 | 10 CONTINUE | |
63 | I=19 | |
64 | 20 RAT = (EKFISS(I)-GEKIN)/(EKFISS(I)-EKFISS(I-1)) | |
65 | AIIN(1) = CSGN(I-1)*RAT + CSGN(I)*(1.-RAT) | |
66 | AIFI(1) = CSGF(I-1)*RAT + CSGF(I)*(1.-RAT) | |
67 | SIG = AIIN(1) + AIFI(1) | |
68 | C | |
69 | SIG = SIG*Z43BA/0.53 | |
70 | SIG = SIG*0.0006022045*DENS/A | |
71 | C | |
72 | 90 IF(SIG.GT.0.) THEN | |
73 | ALAM = 1./SIG | |
74 | ELSE | |
75 | ALAM = BIG | |
76 | ENDIF | |
77 | C | |
78 | END |