# XXCOM

## Function

calculate and displays photon-atom cross sections.

It interfaces XCOM, a computer program and data base to calculate photon cross sections for scattering, photoelectric absorption and pair production, as well as attenuation coefficients, in any element, compound or mixture, at energies from 1keV to 100GeV

## Documentation

- application doc

- input parameters

- xcom doc

## Technical aspects

References:

XCOM: Photon Cross Sections on a Personal Computer, M. J. Berger and J. H. Hubbell, Center for Radiation Research, National Bureau of Standards, Gaithersburg, MD 20899

http://physics.nist.gov/PhysRefData/Xcom/Text/XCOM.html