Stopping Cross Sections for 0.3- to 1.7-MeV Helium Ions in Silicon and Silicon Dioxide
- 1 September 1971
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 42 (10), 3969-3976
- https://doi.org/10.1063/1.1659712
Abstract
Stopping cross sections of helium ions with energy 0.3–1.7 MeV have been measured with a systematic error of ±1.6% in silicon and ±1.3% in amorphous silicon dioxide. The probable random error of the measurements is estimated to be 2.3%. Experimentally, a backscattering technique is used in which the ions are scattered through 150° from a heavy mass atom on the back surface of the target film. The stopping cross‐section data were obtained using a 1114‐Å‐thick silicon target film and a 1030‐Å silicon dioxide film. The results for SiO2 indicate a deviation from the Bragg‐Kleeman rule of additivity of atomic stopping cross sections.Keywords
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