Experimental determination of angular‐energy distributions of electrons backscattered by bulk gold and silicon samples

Abstract

Summary:This work describes an experimental study of the backscattering of electron beams with an energy range between 20 and 100 keV. The energy distribution of electrons backscattered by bulk gold and silicon samples at different take-off angles was determined with an original device. The different major sources of noise were studied and then the spectra obtained were processed. Theoretical interpretation of this phenomenon using Monte Carlo simulations will be presented in a future paper.

New measurements and quantitative analysis of electron backscattering in the energy range of neutron β-decay

“…Our previous work on backscattering [1] from beryllium and silicon extended the work of others [2][3][4] to energies relevant for nuclear physics applications. We further extend this work to a more relevant target, organic scintillator.…”

Energy spectra and angular distributions of charged particles backscattered from solid targets

“…This study includes experimental data from 11 different published experiments reported between 1954 and 2002 [16,17,[31][32][33][34][35][36][37][38][39]. Most of the experimental data were digitized electronically from their original sources because they are not available in tabular form.…”

“…See section 2 for definitions of the parameters used. Experimental data are from [32] ( ), [34] (×), [38] (•) and [39] ( ). Data below E/E 0 ∼ 0.1 are either unavailable or too noisy.…”

“…For this reason, is varied between simulations to match the specific experiment being simulated, and its value is reported in all graphs in section 4. The bin widths chosen for the energy spectra and angular distributions are (E 0 /120) keV and 3 ( ), [33] ( ) and [34] (×). = 31.4, 1.9, 0.9 and 3.2 msr for the three experiments and for the EGSnrc simulation, respectively.…”

“…See section 2 for definition of the parameters used. Experimental data are from[31] ( ),[33] ( ) and[34] (×).= 31.4, 1.9, 0.9 and 3.2 msr for the three experiments and for the EGSnrc simulation, respectively. Results are presented in Cartesian and polar forms.…”