Gamma-radiation characteristics of 1.2 GeV electrons in thick silicon single crystals

Measurement of the energy distribution of bremsstrahlung using Compton scattering

“…For light scattering targets made of Be and C, agreement between the restored spectra of γ radiation and the spectrum of primary γ radiation is satisfactory in the range of acquired statistics, whereas for Al with the thickness 10 mm, significant disagreement in the γ quantum energy range 0-75 MeV is observed. This fact agrees with experimental data [7][8][9], where the γ radiation yield of electrons with the energy 1200 MeV was measured from various scattering tar gets, and a significant difference in the restored spec tra in the γ quantum energy range up to 75 MeV was observed for a scattering target made of Al with the thickness 6 mm in comparison with Al with the thick ness 1 mm and Be with the thickness 8 mm. In thick targets there occurs an increase in the bremsstrahlung of electrons and positrons generated in the scatterer upon the production of electron-positron pairs and Compton scattering.…”

“…The restoration procedure aided by the Compton and Klein-Nishina formulas is described elsewhere [7,8]. For light scattering targets made of Be and C, agreement between the restored spectra of γ radiation and the spectrum of primary γ radiation is satisfactory in the range of acquired statistics, whereas for Al with the thickness 10 mm, significant disagreement in the γ quantum energy range 0-75 MeV is observed.…”

“…The experimental procedure based on Compton scattering aimed at studying the γ radiation spectra of electrons with the energy 1200 MeV in sin gle crystals was described and applied elsewhere [7,8]. Application of the Compton procedure in the low energy range was demonstrated in [9][10][11].…”

<title>Intensive X-ray source optimization</title>

“…The transference of the scatterer along A-C allows the measuring of the spectral-angular distribution of the gamma-radiation. This technique was tested on Kharkov linear electron accelerator at electron energy 1 GeV [10,11].…”

“…The method is based on the results received by authors at investigations of gamma radiation of electrons in thick single crystals [10][11][12]. In the measurements are used the method of the nonlinear conversion of initial gamma radiation by a Compton scattering on the target -scatterer [10].…”