XTUBES

Function
To calculate the spectum of an X-ray tube with Mo, Rh or W target in
the energy range 18-40 keV
Documentation
Technical aspects
Reference:
J.M.
Boone T.H. Fewell and R. J. Jennings (1997) "Molybdenum, rhodium,
and tungsten anode spectral models using interpolating polynomials with
application to mammography" Medical Physics 24 pp. 1863-1874