9th Rocky Mountain NASA Space Grant Consortium Symposium
Rocky Mountain NASA Space Grant Consortium
The angle dependence of emitted electron spectra from a polycrystalline Au surface has been measured at several incident electron beam energies. The range of incident energies (~100 eV to 2500 eV) extends from below the first crossover energy, through Emax, to above the second crossover energy. The traditional distinction between secondary electrons (50 eV) is found to be inconsistent with our energy- and angle-resolved measurements. We suggest a more “natural” delineation occurs at the local minima of the emission spectra; this feature is studied as a function of incident energy and emission angle. This work is also supported by the NASA Space Environments and Effects Program.
Jason Kite with JRDennison, “Secondary Electron Production and Transport Mechanisms by Measurement of Angle-Energy Resolved Cross Sections of Secondary and Backscattered Electrons,” 9th Rocky Mountain NASA Space Grant Consortium Symposium, Salt Lake City, UT, May 2003.