5 * Revision 1.1.1.1 1995/10/24 10:21:54 cernlib
9 #include "geant321/pilot.h"
10 *CMZ : 3.21/02 29/03/94 15.41.48 by S.Giani
12 SUBROUTINE BARIER(KZ1,KZ2,A1,A2,CB)
13 C THIS ROUTINE CALCULATES THE COULOMB BARRIER FOR A
14 C COLLISION INVOLVING CHARGED PARTICLE EMISSION
16 C CALCULATE THE RADIUS OF THE NUCLEUS AND CHARGED PARTICLE
18 10 IF(A.LT.5.5)R=1.20E-13
19 IF((A.GE.5.5).AND.(A.LT.6.5))R=2.02E-13
20 IF((A.GE.6.5).AND.(A.LT.7.5))R=2.43E-13
21 IF((A.GE.7.5).AND.(A.LT.8.5))R=2.84E-13
22 IF((A.GE.8.5).AND.(A.LT.9.5))R=3.25E-13
23 IF(A.GE.9.5)R=(A**(1.0/3.0))*1.70E-13
30 C CALCULATE THE COULOMB BARRIER (UNITS=MEV)
31 C THE FACTOR 0.75 IS ARBITRARYLY SET TO ACCOUNT FOR CHARGED
32 C PARTICLE EMISSION BELOW THE COULOMB BARRIER
33 CB=((KZ1*KZ2*1.44E-13)/(R1+R2))*0.75
34 IF(CB.LT.0.0) CB = 0.0