[HTML][HTML] First-principles investigation of interaction between the atomic oxygen species and carbon nanostructures

YG Polynskaya, NA Matsokin, AS Sinitsa, AA Knizhnik… - Carbon Trends, 2022 - Elsevier
In this work we perform a systematic theoretical study of oxidation process of different carbon
nanomaterials by atomic oxygen. In order to understand the atomistic mechanism of …

Controlling optics contamination at the PolLux STXM

B Watts, N Pilet, B Sarafimov, K Witte… - Journal of …, 2018 - iopscience.iop.org
Contamination of X-ray mirror surfaces by carbon is a common issue that can significantly
degrade the optical performance of the instrument. The effects can be severe at photon …

Refurbishment of an Au-coated toroidal mirror by capacitively coupled RF plasma discharge

PK Yadav, M Kumar, RK Gupta, M Sinha… - Journal of …, 2019 - journals.iucr.org
Deposition of synchrotron-radiation-induced carbon contamination on beamline optics
causes their performance to deteriorate, especially near the carbon K edge. The photon flux …

Effect of zirconium oxide local structure on soft x-ray optical properties near the oxygen K-edge region

M Sinha, R Gupta, K Kiranjot, A Singh… - Journal of Applied …, 2020 - pubs.aip.org
Zirconium oxide thin film serves as one of the potential material candidates in extreme
ultraviolet/soft x-ray optics applications. The suitability of its application can be justified by …

Carbon removal from a mirror-like gold surface by UV light, RF plasma, and IR laser exposure: a comparative study

PK Yadav, RK Gupta, AK Choubey, S Ali… - Applied Optics, 2020 - opg.optica.org
A decrease in photon intensity due to carbon contamination on optical elements is a serious
issue in synchrotron radiation (SR) beamlines. Photon intensity can be regained by …

Boron carbide thin film surface characterization after graphitic carbon removal using low-pressure oxygen gas RF plasma

PK Yadav, RK Gupta, S Gupta, C Mukherjee… - Applied Optics, 2023 - opg.optica.org
B _4 C-coated thin film mirrors are used in high brilliance synchrotron and x-ray free electron
laser beamlines due to their low absorption coefficient and high thermal stability. As in the …

[PDF][PDF] Controlling optics contamination at the PolLux STXM

A Haidl, K Andrianov, T Nisius - academia.edu
The deposition of carbon films on X-ray optics is commonly observed, despite the use of an
ultra high vacuum (UHV) environment. Such contamination impacts the performance of the …

Use of zero order synchrotron radiation for in-situ cleaning of beamline optics: Results of trial experiments

PK Yadav, RK Gupta, MH Modi - AIP Conference Proceedings, 2019 - pubs.aip.org
Synchrotron radiation (SR) induced contaminated toroidal mirror (TM2) of reflectivity beam
line at Indus-1 synchrotron source is resuscitated using zero order synchrotron radiation in …

[PDF][PDF] T. 3: Study of carbon removal from synchrotron mirror like gold surfaces using different techniques

PK Yadav, MH Modi - rrcat.gov.in
Synchrotron radiation (SR) induced carbon contamination on optical elements is a serious
issue in SR beamlines. Carbon contamination reduces photon flux by scattering and …

Refurbishing of carbon contaminated pre-mirror of reflectivity beam line at Indus-1

PK Yadav, M Kumar, RK Gupta, M Sinha… - AIP Conference …, 2018 - pubs.aip.org
In recent days optics contamination and its refurbishing is a serious issue for synchrotron
radiation beam line community. Here we refurbished a carbon contaminated mirror by Ar …