Message:  xsdir=xsdir.tendl2021

Title:  Example photonuclear simulation
c       - Neutron Production per electron for 20 MeV electrons on
c         a one radiation length thick target.
c
c - Density and isotopic abundance data obtained from links at
c   https://periodictable.com/Properties/A/StableIsotopes.html
c   (as tabulated in late June 2023).
c
c
c In
   1   11   -7.31       +1 -2   +11 -12   +21 -22   imp:e,n,p=1
   2   0                -1:+2 : -11:+12 : -21:+22   imp:e,n,p=0
c

c
c - Targets are 4.5 in. square (11.43 cm square) by one radiation length thick
c   - Radiation length data for individual elements/isotopes obtained via links
c     at https://pdg.lbl.gov/2009/AtomicNuclearProperties/
c     - Data extracted on July 2, 2023.
c
   1   px     0.0
   2   px     1.211
  11   py    -5.715
  12   py     5.715
  21   pz    -5.715
  22   pz     5.715
c

c
 mode e p n
 sdef pos=0 0 0 sur=1 rad=d1 vec=1 0 0 dir=1 par=3 erg=20  $ 20.0 MeV monoenergetic electron beam
 si1 0.635                                                 $ beam spot radius (0.25 in)
c
c
c - use "m0" to assign default libraries
c   for E80:         elib=03e plib=14p nlib=00c pnlib=70u; default mcnp6.2 xsdir
c   for jendl-5:     elib=03e plib=20p nlib=20c pnlib=20u; xsdir=xsdir.j50
c   for tendl-2021:  elib=03e plib=14p nlib=21c pnlib=21u; xsdir=xsdir.tendl2021
c
   m0    elib=03e plib=14p nlib=21c pnlib=21u
c
c In
  m11
      49113 0.0429
      49115 0.9571
c
c
  fcl:p    1  0
  phys:p  3j -1
  phys:n   j  150
c
c - Stop the simulation at the PN neutron production threshold ...
  cut:p j   9.03787
  cut:e j   9.03787
c
c
  fc1   Neutrons/electron emission through target surfaces
        and summed over the entire target
  f1:n  1 2 11 12 21 22 (1 2 11 12 21 22)
 tf1    7
c
  nps 250000000   $250M
c nps 2500000     $2.5M, debug
c
  print