where 7(Sj)co is X-ray ecarsgy in 3 freqeeccy incremene dO about D; we is a mmter
used bere to accommodate discrepant standards for air density-beighe arofile;
R is radial distance froe alr zero to the station; 0, is air density which is a
function of alcitude; Woe Pos and Xp are the mass absorption coefficient, densiry,
and thicksess of the beryllisa part of the filter; and 5, ey aod 5 are the
sane paramters for the aliuimm part of the filter.
The orientation 8 of the
detector takes into account the effect of the projected area of the detector
aperture as well as the effective filter thickness on E.
Orientation A is
defined as magnitude of the angle between the bess of X-rays and the normal to
aG
= a? | oo a a,
the surface of the most directly exposed detector.
lage 70 deleted,
“S
*