Results 141 to 150 of about 7,206,331 (163)

Rotation of X-Ray Polarization in the Glitches of a Silicon Crystal Monochromator [PDF]

Journal of Applied Crystallography, 2016
EXAFS studies on dilute samples are usually carried out by collecting the fluorescence yield using a large-area multi-element detector. This method is susceptible to the `glitches' produced by all single-crystal monochromators. Glitches are sharp dips or spikes in the diffracted intensity at specific crystal orientations.
Sofia Diaz-Moreno, Daniel T Bowron, Roberto Boada   +2 more
exaly   +3 more sources

Dynamical Oscillations and Glitches in Anomalous X-Ray Pulsars

Astrophysical Journal Letters, 2010
Recently reported observations of magnetar glitches and coincident X-ray long-term brightening events establish enough of a database to indicate that the brightening events are accompanied by glitches at their outset, and that they are probably triggered by the same event that triggers the glitch. We suggest, on the basis of various observational clues,
David Eichler
exaly   +2 more sources

Invariable X-Ray Profile and Flux of the Crab Pulsar During Its Two Glitches

Astrophysical Journal, 2022
Abstract We compare the X-ray profiles and fluxes of the Crab pulsar before and after the glitches in 2017 and 2019, using the data collected by the Insight-HXMT, NICER, and Fermi/GBM, to test whether there is any evidence for magnetosphere rearrangement after glitch.
Fang-Jun Lu, S J Zheng, Y L Tuo
exaly   +2 more sources

A Second Glitch From the “Anomalous” X-Ray Pulsar 1RXS J170849.0–4000910 [PDF]

Astrophysical Journal, 2003
13 pages, 2 figures. Revised manuscript and Fig 1 following refereeing.
Victoria Kaspi, F P Gavriil
exaly   +3 more sources

Glitch-Free X-Ray Absorption Spectrum Under High Pressure Obtained Using Nano-Polycrystalline Diamond Anvils [PDF]

Journal of Synchrotron Radiation, 2012
Nano-polycrystalline diamond (NPD) [Irifune et al. (2003), Nature (London), 421, 599] has been used to obtain a glitch-free X-ray absorption spectrum under high pressure. In the case of conventional single-crystal diamond (SCD) anvils, glitches owing to Bragg diffraction from the anvils are superimposed on X-ray absorption spectra.
Tetsuo Irifune, Naoki Ishimatsu, Hitoshi Sumiya   +2 more
exaly   +3 more sources

Investigation of `Glitches' in the Energy Spectrum Induced by Single-Crystal Diamond Compound X-Ray Refractive Lenses

Journal of Synchrotron Radiation, 2019
Single-crystal diamond stands out among all the candidate materials that could be exploited to fabricate compound refractive lenses (CRLs) owing to its extremely stable properties. Among all related experimental features, beam divergence, χ-angles relative to the incoming beam in Eulerian geometry and different positions of the X-ray beam relative to ...
Maxim Polikarpov, Nataliya Klimova, Gunnar Thorkildsen   +2 more
exaly   +3 more sources

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Suppression of glitches in X-ray measurements

Nuclear Instruments and Methods in Physics Research, 1982
Abstract There are two approaches in eliminating glitches that occur at particular X-ray monochromator energies due to coincidences of several reflections which take intensity from the main beam. The first is to move the monochromator crystals in such a manner as to avoid producing the glitches. This is very difficult in practice.
E.A. Stern, Kun-quan Lu
openaire   +1 more source

Optimal Azimuthal Orientation for Si(111) Double-Crystal Monochromators to Achieve the Least Amount of Glitches in the Hard X-Ray Region

Journal of Synchrotron Radiation, 2015
Simulations of the periods, split regularities and mirror symmetries of the glitch pattern of a Si(111) crystal along with the azimuthal angles are presented. The glitch patterns of Si(111) double-crystal monochromators (DCMs) are found to be the superposition of the two sets of glitch patterns from the two crystals.
Pengfei An, Lirong Zheng, Shengqi Chu
exaly   +3 more sources

Determination of glitches in soft X-ray monochromator crystals

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1988
The location of multiple reflections or “glitches” is given by a general expression, from which the glitch maps of KAP(100), beryl(1010), alpha-quartz(1010), InSb(111), Ge(111) and Si(111) are derived. A proper choice for the azimuthal orientation of these crystals leads to a large glitch-free region at the low-energy side of the monochromator range ...
Van der Laan, Gerrit, Thole, Bernard T.
openaire   +2 more sources

A Pulse Profile Change Possibly Associated With a Glitch in the Anomalous X-Ray Pulsar 4U 0142+61

Astrophysical Journal, 2005
14 pages, 4 figures, accepted by ...
Nobuyuki Kawai, Noriaki Shibazaki
exaly   +3 more sources