@article{gledocs_11858_8730,
author = {Andrle, A. and Hönicke, P. and Vinson, J. and Quintanilha, R. and Saadeh, Q. and Heidenreich, S. and Scholze, F. and Soltwisch, V.},
title = {The anisotropy in the optical constants of quartz crystals for soft X‐rays},
year = {2021-02-19},
volume = {54},
number = {2},
pages = {402-408},
publisher = {International Union of Crystallography},
publisher = {5 Abbey Square, Chester, Cheshire CH1 2HU, England},

abstract = {The refractive index of a y‐cut SiO2 crystal surface is reconstructed from orientation‐dependent soft X‐ray reflectometry measurements in the energy range from 45 to 620 eV. Owing to the anisotropy of the crystal structure in the (100) and (001) directions, a significant deviation of the measured reflectance at the Si L2,3 and O K absorption edges is observed. The anisotropy in the optical constants reconstructed from these data is also confirmed by ab initio Bethe–Salpeter equation calculations for the O K edge. This new experimental data set expands the existing literature data for quartz crystal optical constants significantly, particularly in the near‐edge regions.},
note = { \url {http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/8730}},
}