Tools to generate the interaction and nuclear data for CRPropa 3.

Interactions between cosmic ray nuclei and background photons

• calc_epp.py : electron pair production
• calc_ppp.py : photo-pion production
• calc_photodisintegration.py : photodisintegration
• calc_elasticscattering.py : elastic scattering on the nuclear structure

Interactions between cosmic ray photons / electrons and background photons

• calc_electromagnetic.py
  • photon : pair and double-pair production
  • electrons : triplet pair production and inverse Compton scattering

Other processes:

• calc_decay.py : nuclear decays
• calc_synchrotron.py : synchrotron radiation of charged particles
• calc_scaling : global redshift scaling of cosmic photon fields
• calc_mass : table of nuclear masses

Helper modules

• photonField.py : collection of background photon fields (CMB, EBL, URB)
• interactionRate.py : functions to calculate interaction rates with isotropic photon fields