Monte Carlo Simulation of Backscattering Phenomena
A Monte Carlo simulation program (BACKS) has been written in such a way as to be efficient for the generation of backscattering data for particle energies of approximately one keV to two MeV. The program is several thousand times as efficient as conventional programs in generating backscattering data at higher energies due to an information return analysis routine involving particle generation over selected sub-areas of the crystal face.
The program takes into account energy losses and thermal motion. It allows for a nearly complete range of beam to crystal face angles. Most crystal forms can be used as well as crystals containing several different kinds of atoms.
The data output includes a depth of information distribution energy loss spectrum, a number of collisions, distribution, and a backscattering pattern.
Among the results obtained from the program is a quantitative prediction of a “classical” isotope effect. The results obtained also shed light on the effects of changing particle energy and crystal structure.
The program is seen as forming a useful bridge between theoretical approaches and experimental results since the effects of change in theoretical values can readily be used to generate backscattering information which can be compared with experimental results.
KeywordsHydrogen Isotope Crystal Face Principal Peak Conventional Program Loss Find
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