A method for separating the diffuse X-ray component by using growth curves

Details A method for separating the diffuse X-ray component by using growth curves A method for separating the diffuse X-ray component by using growth curves

Dec 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978a%26a....70..751m&link_type=abstract

Astronomy and Astrophysics, vol. 70, no. 6, Dec. 1978, p. 751-753.

Astronomy and Astrophysics

Astronomy

Atmospheric Radiation, Balloon-Borne Instruments, Curve Fitting, Diffuse Radiation, X Ray Density Measurement, X Ray Spectra, Energy Spectra, Primary Cosmic Rays, Secondary Cosmic Rays, Vertical Distribution, X Ray Astronomy

Scientific paper

The secondary flux is separated from the primary X-ray flux from balloon-borne measurements by using the growth curves obtained by plotting the counting rate as a function of atmospheric depth. The following analytical functional form for the growth curve is proposed for fitting the data between 15 and 100 g/sq cm: C = A times P to the 0.15 power times log P. A modification of this functional form is also presented that expresses an energy dependence. The form without energy dependence is valid above 300 keV. The difference flux between the observed values and the estimated flux at ceiling altitude then determines the primary component.

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