Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
Volume 359, Issue -, Pages 115-119Publisher
ELSEVIER
DOI: 10.1016/j.nimb.2015.07.098
Keywords
Carbon foil; Energy loss; Energy straggling; Angular scattering; Space plasma instrument
Categories
Funding
- Southwest Research Institute Internal Research AMP
- Development program
- NASA [NNX13AG23G]
- NASA [474569, NNX13AG23G] Funding Source: Federal RePORTER
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Thin carbon foils are used in many fields of physics, including for the detection of keV particles in space plasma instrumentation. The interaction of ions or neutral atoms with these foils results in different effects: electron emission, charge exchange, angular scattering, and energy loss and straggling. We report measurements of the energy loss and straggling and angular scattering of 1-50 keV protons for different foil thicknesses (nominal 0.5-2.0 mu g/cm(2)). We derive simple semi-empirical relationships for the energy loss and straggling as a function of incident energy and foil thickness. We also derive a semi-empirical relationship between the derived thickness and the scattering constant. This provides a simple and straightforward tool to estimate the energy loss by measuring the angular scattering of protons for a particular foil. (C) 2015 Elsevier B.V. All rights reserved.
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