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A nitrogen‐gas‐stream cryostat for general X‐ray diffraction studies

, 1986
A continuous nitrogen-flow cooling device, generally applicable to X-ray diffraction studies, is described. The device works in the range 77.4 to 323.0 K with a precision of ±0.1 K and a liquid-nitrogen constant consumption rate of 0.5 l h−1 over the ...
J. Cosier, A. Glazer
semanticscholar   +1 more source

Diffraction

2002
Diffraction refers to the effects observed when light is scattered into directions other than the original direction of the light, without change of wavelength. An X-ray photon may interact with an electron and set the electron oscillating with the X-ray frequency. The oscillating electron may radiate an X-ray photon of the same wavelength, in a random
openaire   +1 more source

Diffraction and unitarity

International Journal of Modern Physics A, 2016
I begin with a tribute to V.N. Gribov and then come to a particular problem which would be of interest for him. His first paper on reggeology was devoted to elastic scatterings of hadrons. Here, using the unitarity relation in combination with experimental data about the elastic scattering in the diffraction cone, I show how the shape and the darkness
I. M. Dremin, I. M. Dremin
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Diffraction as tunneling

Physical Review Letters, 1987
A new approximation to the short-wavelength scattering amplitude from an impenetrable sphere is presented. It is uniform in the scattering angle and it is more accurate than previously known approximations (including Fock's theory of diffraction) by up to several orders of magnitude. It remains valid in the transition to long-wavelength scattering.
Warren J. Wiscombe, H. M. Nussenzveig
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Diffracting Diffraction: Cutting Together-Apart

Parallax, 2014
Diffract – dif-frange˘re – to break apart, in different directions1 (as in classical optics)Diffraction/intra-action – cutting together-apart (one move) in the (re)configuring of spacetimemattering...
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DIFFRACTION IN SWAN

Coastal Engineering 2002, 2003
To accommodate diffraction in conventional spectral wave models, a phase-decoupled refraction-diffraction approximation is suggested. It is based on the mild-slope equation for refraction-diffraction, ignoring phase information. It does therefore not permit applications in harbours.
W. Cieslikiewicz   +3 more
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Heart diffraction

Optics Letters, 2017
A theoretical study of the plane-wave diffraction by a heart-like sharp-edge aperture corresponding to the involute of a circle is proposed here. Through the recently developed paraxial boundary diffraction wave theory, expressed via the language of catastrophe optics, the presence of pseudo-nondiffracting regions within the three-dimensional spatial ...
openaire   +2 more sources

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