Abstract
We have characterized Mylar by determining the yield and energy spectrum of emitted secondary electrons. In this study we used a conventional electron accelerator apparatus to which we have made some important adjustments, especially to determine the normalized energy distribution. These adjustments allowed us to obtain the data necessary to calculate reduced yield curves, (δ/δM vs. E/EM) in which the secondary yields and the Energy of the fixed energy beam were both divided by their maximum values. Results for the total yield (σ), backscattered electrons (η) and true secondary emission electrons (δ) were obtained as a function of the energy of the incident electron beam (E). The results from an experiment where the incident beam was vertically striking a Mylar sample (thickness 36 μm) are presented. The location of the first and second crossover points, where δ=1, as well as the energy spectrum of secondary electron using a planar symmetry arrangement for energies of 1.2 and 1.4 keV were obtained and presented.
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