Angle dependence of matrix elements in X-ray bremsstrahlung isochromat spectroscopy

Transition matrix elements for bremsstrahlung isochromat spectroscopy (BIS) are investigated. Contrary to formulae presented before, they are found to be dependent on the angle between the incident electron beam and the emitted bremsstrahlung radiation. The effect of using angle-dependent BIS matrix elements is demonstrated for the case of Cu.

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