Results 111 to 120 of about 467 (130)
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Suppression of glitches in X-ray measurements
Nuclear Instruments & Methods in Physics Research, 1982Abstract 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
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Soft X-ray pulses from neutron star glitches
Astrophysical Journal, 1991 Glitches release energy in the interiors of neutron stars. In some models of glitches, such as those involving the sudden transfer of angular momentum to the stellar crust from a more rapidly rotating neutron superfluid, the energy liberated is large enough (∼10 38 −10 43 ergs) to noticeably raise the temperature of the stellar surface.
Richard Epstein, Kenneth A Van Riper
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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 +2 more
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Determination of glitches in soft X-ray monochromator crystals
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1988The 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 ...
Gerrit Van Der Laan
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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
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Crystal Glitches of X-Ray Monochromators
1984Crystal glitches arise when the Bragg condition is fulfilled for more than one set of lattice planes simultaneously, which can only occur at discrete energies [1]. At these energies the intensity of the x-ray beam emerging from the monochromator will exhibit a more or less pronounced dip.
K. R. Bauchspiess, E. D. Crozier
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Spectral X‐Ray Glitches in Monocrystalline Diamond Refractive Lenses
physica status solidi (b), 2017X‐ray refractive lenses are widely used optical devices at today synchrotron X‐ray sources. In the present paper we demonstrate negative influence of the X‐ray diffraction on optical properties of monocrystalline X‐ray refractive lenses in operation. Several types of single‐crystal diamond lenses were studied in X‐ray spectroscopy mode at the European ...
Maxim Polikarpov +5 more
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Radio Pulsars as Progenitors of Anomalous X-Ray Pulsars and Soft Gamma-Ray Repeaters: Magnetic Field Evolution through Pulsar Glitches [PDF]
Astrophysical Journal, 2004 Glitches are common phenomena in pulsars. After each glitch, there is often a permanent increase in the pulsar's spin-down rate. Therefore, a pulsar's present spin-down rate may be much higher than its initial value and the characteristic age of a pulsar based on its present spin-down rate and period may be shorter than its true age.
J. R. Lin, S. N. Zhang
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Journal of Applied Crystallography, 1997
In the course of the development of the YB66 004 monochromator for soft-X-ray spectroscopy in the 1–2 keV region, two positive glitches at 1385.6 and 1438 eV have been observed in the transmission function of this material in a double-crystal configuration.
T. Tanaka +7 more
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In the course of the development of the YB66 004 monochromator for soft-X-ray spectroscopy in the 1–2 keV region, two positive glitches at 1385.6 and 1438 eV have been observed in the transmission function of this material in a double-crystal configuration.
T. Tanaka +7 more
openaire +1 more source