Example photonuclear simulation: find the n spectrum from a disc
c
c In
    1   11   -7.31    -11 21 -22
    2    0           ( 11 :-21: 22 ) -91
    9    0                            91

   11    cz      5.0
   21    pz      0.0
   22    pz      2.5
   91    so    150.0

 mode e p n
 sdef pos=0 0 0 sur=21 vec=0 0 1 dir=1 par=3 erg=20
c
c
   m11 plib=14p elib=01e nlib=00c pnlib=19u
       49113 0.0429
       49115 0.9571
 mpn11
       49113
       49115
c
 fcl:p  1 0 0
 phys:p 3j 1
 cut:p j   3.071
 cut:e j   3.071
c
 wwp:e,p,n 5 3 5 0 0
 wwe:e,p,n 20
 wwn1:e,p  0.2    0.2     -1
 wwn1:n    0.0001 0.0001  -1
c
  e15     0.01 0.05 0.1 0.4 0.6 0.8 1
          1.25 1.5 1.75 2 2.5 3 3.5 4 5 6 7 8 9 10 12.3858
  f15:n   0.0 100.0 1.25 0.0
c
  e22     0.01 0.05 0.1 0.4 0.6 0.8 1
          1.25 1.5 1.75 2 2.5 3 3.5 4 5 6 7 8 9 10 12.3858
  f22:n   11 21 22 (11 21 22)
c
  nps 250000000
c nps 2500000
c
  print