Numerical simulation of a parametric x-rays (PXR) source

Alexander S. Lobko; Olga M. Lugovskaya

doi:10.1117/12.741933

2 May 2007 Numerical simulation of a parametric x-rays (PXR) source

Alexander S. Lobko, Olga M. Lugovskaya

Proceedings Volume 6634, International Conference on Charged and Neutral Particles Channeling Phenomena II; 663415 (2007) https://doi.org/10.1117/12.741933
Event: International Conference on Charged and Neutral Particles Channeling Phenomena II, 2006, Rome, Italy

Abstract

Features of a PXR source at a 100 MeV linac in θ-2θ target-to-detector arrangement were numerically simulated on the base of general expressions taking into account diffracted x-ray transition radiation (DTR) and interference between PXR and DTR. We have calculated x-ray intensities and polarization in symmetric Laue geometry for Bragg angles from 2 through 45 degrees. Thickness of Si target of 0.01 and 0.001 cm, detector aperture of 0.01 rad and x-ray energy resolution of 0.05 were accepted. Wide range x-ray energy tuning with minor intensity variation may be obtained using crystal target of optimal thickness that is close to the Bremsstrahlung coherence length. Calculations of the asymmetric case have shown considerable x-ray intensity increase due to the choice of optimal absorption of the emitted x-ray quanta. Dynamical effects expressed in appearance of the peculiarities in the PXR spectral-angular and angular distributions were also observed both for symmetric and asymmetric generation geometries. It could be important for a PXR source use, especially for experiments with high resolution x-ray diffractometry.

Citation Download Citation

Alexander S. Lobko and Olga M. Lugovskaya "Numerical simulation of a parametric x-rays (PXR) source", Proc. SPIE 6634, International Conference on Charged and Neutral Particles Channeling Phenomena II, 663415 (2 May 2007); https://doi.org/10.1117/12.741933

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KEYWORDS

X-rays

Crystals

X-ray diffraction

X-ray sources

Diffraction

Particles

Absorption

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