ppfrag Files

download the file ppfrag02.tar.gz and unpack it,
> tar -xvf ppfrag02.tar.gz 

Two examples for a main files (one for antiproton, 
another one for gamma spectra), the subroutines frag.f
and param.f, two data files (ap-table.dat and gamfrag.dat),
a Makefile and this Readme file shoud appear.


Compiling the program with a fortran compiler, and
running it

> make aproton
> ./ap.out

and

> make gamma
> ./gam.out


produces as output files:
 * aprot.dat 
 * p+p-gamma0.dat, p+p-gamma0.dat, and He+p-gamma.dat

* The program main_aprot.f contains
as example calls to the subroutine

apspec(e0,epbar,iap,iat) which returns Epbar * d[sig(E0,Epbar)]  / d[Epbar]
for primary nuclei with mass number iap =1,..,60, 
target nuclei with mass number iat =1,4.

* The main_gamma.f contains
as examples calls to the subroutine

double precision function spec_int(ep,es,id,reac) which
interpolates the energy spectra es*dsigma/des of photons 
in the lab system. Its variables are

ep  - incident energy per nucleon (GeV);
es  - secondary particle energy (GeV);
id  - secondary particle type (0 - photon)
reac - production process: 2 - p+He; 3 - He+p using only QGSJET,
                           0: photon spectra for p+p collisions based on the 
                              non-diffractive part of the Kamae parametrization
                              for ep<ethr and QGSJET tables for ep>ethr 


All cross sections are in mbarn, all energies are the usual relativistic 
energy.