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Distorted Wave Approximation for Scattering Phase-Shifts

Nature, 1960
THE elastic scattering wave-function for a short-range potential function V(r) may be written in the form : where j l(x) and n l(x) are the spherical Bessel and Neumann functions respectively, δl is the scattering phase-shift, and g l(r) is a form factor measuring the distortion ...
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Phase intercept distortion in bandpass networks

Proceedings of the IEEE, 1967
This letter points out that phase distortion can arise in linear bandpass networks which have linear phase characteristics within the pass-band. In particular, it is shown that even in the case of an ideal bandpass filter having a linear phase response within its passband, signals bandlimited to the filter bandwidth can undergo a distortion upon ...
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Phase states in rotationally distorted perovskites

Crystallography Reports, 2002
The thermodynamic and crystallochemical conditions determining the types of the rotational phase transitions and their sequence in cubic perovskites are established. It is shown that a decrease in the tolerance factor and a change of the A-cation and its charge stimulates the softening of the rotational-vibrational mode M3. As an example, the compounds
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Holographic interferometry under phase distortions

2017
An impact of non-stationary phase distortions in transfer section of a holographic interferometer on the quality of formed interference fringes in an interferogram was under investigation. A mathematical model to analyze this influence was proposed. The conclusions based on the model were made about the possibility to observe interference fringes under
Derzhypolska, L.A., Gnatovskiy, O.V.
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