Investigation of glitches induced by single-crystal diamond compound refractive lenses based on crystal orientation

Abstract

Single-crystal diamond is considered as an ideal material for compound refractive lenses (usually abbreviated to "CRLs") mainly due to its stability when bathed in strong X-ray radiation. Since CRLs come into operation by a refractive mechanism, it is imperative to study the transmission spectrum carefully. Many factors may influence the spectrum, including experimental features (such as beam divergence) and crystal orientation in this case. To verify initial assumptions, two experimental setups were realized-the energy scan and ω-scan. Both at BM31 station, ESRF. The results show that a number of glitches appear between 16 keV and 18 keV and the largest drop of intensity can reach up to approximately 40%. In this paper, we find that both positions and strengths of the predicted glitches are very sensitive to orientational correction, but that we in principle are able to predict them accurately when the real orientation is obtained.

Determination of the Exact Orientation of Single-Crystal X-ray Optics from Its Glitch Spectrum and Modeling of Glitches for an Arbitrary Configuration

“…The sample was mounted at a three-cradle goniometer utilizing 3 axes during the measurements. More experimental details can be found in [27,28]. described in the papers [2,[24][25][26].…”

“…The sample was mounted at a three-cradle goniometer utilizing 3 axes during the measurements. More experimental details can be found in [27,28]. It is worth noting that the glitches recorded by the I1 chamber are caused by both the monochromator (single-crystal silicon) and the sample.…”

Suppressing Diffraction-Related Intensity Losses in Transmissive Single-Crystal X-ray Optics

“…The sample was mounted at a three-cradle goniometer so it could be rotated around any axis during the measurements. More details about the samples and the experiment can be found in [22,23]. detector, one can derive the glitches' influence from the spatial distribution of the beam at the 2D detector [14,15].…”

“…The sample was mounted at a three-cradle goniometer so it could be rotated around any axis during the measurements. More details about the samples and the experiment can be found in [22,23]. For the first CRL (which we refer to as MUL) [19], we launched several scans at different angles χ (rotation around the beam-see Figure 1).…”