engleski

An accurate absolute-scale measurement of bremsstrahlung following absorption of incident X- and \gamma-rays

The spectrum of bremsstrahlung due to photoelectrons ejected by incident photons of energy 59.5 keV was measured. The coincidence set up with two HP germanium detectors was applied, in which the target-detector recorded the energy of ejected photoelectron after it radiated a bremsstrahlung photon, and another (second) detector detected energy of radiated bremsstrahlung photon. A detailed analysis of the applied experimental method was maid. Also, detailed processing of the data is given including the calculations of various detector-to-detector cross-talk processes. Experimental values for cross section obtained is in a good agreement with the calculated values for cross-section using either the well-known semi-empirical thick-target formula and a simple theoretical model of bremsstrahlung radiation due to photoelectrons in an infinitely-thick target.

bremsstrahlung radiation; coincidence measurement; photoelectron; photoelectric effect.

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