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[en] A program has been developed for computing the ESR spectrum of a collection of randomly oriented spins subject only to an electronic Zeeman interaction and having a Lorentzian single crystal line shape. Other single crystal line shapes, including numerical solutions of the Bloch equations, can be accommodated with minor modifications. The program differs in several features from those existing elsewhere, thus enabling one to study saturation effects, over-modulation effects, both absorptive and dispersive signals, and second and higher order derivative signals

No abstract available

[en] Analytical transport methods have been developed to predict photo-Compton currents (PCC) in many geometries. This paper presents the ''second generation'' status of these methods including: (1) a method of determining the azimuthal in addition to the polar angular dependence; (2) an extension to higher order expansions which more accurately predict angular distributions; (3) more accurate back yields of low atomic number materials at high photon energies; and (4) more accurate electron scattering cross sections. The analytical methods have now evolved to the point that almost any quantity associated with vacuum photoemission can generally be calculated to within 20 percent agreement with Monte Carlo predictions and experimental data. 5 tables, 6 figures