Determination of the Exact Orientation of Single-Crystal X-ray Optics from Its Glitch Spectrum and Modeling of Glitches for an Arbitrary Configuration [PDF]
Crystals, 2021 X-ray optics made of single-crystal materials are widely used at most of the X-ray sources due to the outstanding properties. The main drawback of such optics—the diffraction losses, also known as glitches of intensity in the energy spectrum of the ...
Nataliya Klimova +3 more
doaj +6 more sources
Using diffraction losses of X-rays in a single crystal for determination of its lattice parameters as well as for monochromator calibration [PDF]
Journal of Synchrotron Radiation, 2022 A way has been developed to measure the unit-cell parameters of a single crystal just from an energy scan with X-rays, even when the exact energy of the X-rays is not well defined due to an error in the pitch angle of the monochromator.
Nataliya Klimova +3 more
doaj +2 more sources
The Astrophysical JournalWe present our first result from an ongoing pulsar glitch monitoring campaign at the Canadian Hydrogen Intensity Mapping Experiment (CHIME), in which we analyzed the radio and X-ray emission surrounding four glitches in PSR J2229+6114.
Wenke Xia +13 more
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Suppressing Diffraction-Related Intensity Losses in Transmissive Single-Crystal X-ray Optics
Crystals, 2021 The highest-quality X-ray optics can be made of single-crystal materials such as silicon, germanium, or, even better, diamond. Unfortunately, such X-ray optics have one drawback: diffraction losses or the “glitch effect”.
Nataliya Klimova +3 more
doaj +1 more source
Biodiesel Synthesis From Cucumis melo Var. agrestis Seed Oil: Toward Non-food Biomass Biorefineries
Frontiers in Energy Research, 2022 This study aims to examine the potential of non-edible seed oil (Cucumis melo var. agrestis), seed oil content 29.1%, FFA 0.64 (mg KOH/g) for biodiesel production via nano-catalyst. The catalyst was characterized using X-ray diffraction spectroscopy (XRD)
Maria Ameen +9 more
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The Astrophysical Journal, 2023 The braking index is of great importance for interpreting the spin-down mechanism of pulsar rotation. The sudden spin-down rate transition of PSR B0540−69, the lowest braking index n = 0.031, and its variations up to 1.2 in its later phases, without ...
Abdujappar Rusul, Xiao-Ping Zheng
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Evolution of Neutron Stars and Observational Constraints
EPJ Web of Conferences, 2010 The structure and evolution of neutron stars is discussed with a view towards constraining the properties of high density matter through observations.
Lattimer J.
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Diffraction Losses in a Stack of Diamond X-Ray Lenses
PhotonicsCompound refractive lenses, crafted from single-crystal materials like diamond and silicon, are increasingly favored, particularly in cutting-edge facilities, such as free electron lasers and fourth-generation synchrotrons.
Nataliya Klimova, Anatoly Snigirev
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IXPE View of the Crab Pulsar Following the 2025 July 17 and August 6 Glitches
The Astrophysical JournalThe Crab pulsar experienced two relatively small glitches separated by only 20 days in 2025 September and October. Imaging X-ray Polarimetry Explorer (IXPE) observed the source twice, with delay times since the glitch epoch ranging between 35 and 75 days,
Paolo Soffitta +21 more
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Rapid Spectral Evolution of SGR 1935+2154 during Its 2022 Outburst
The Astrophysical JournalDuring the 2022 outburst of SGR 1935+2154, a fast radio burst (FRB)-like event (FRB 20221014A) and X-ray activities occurred between two spin-up glitches, suggesting these glitches may connect to multiwavelength phenomenology.
Chin-Ping Hu +11 more
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