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Get Advances in optical and electron microscopy PDF

By Tom Mulvey, Charles J.R. Sheppard

ISBN-10: 0120299127

ISBN-13: 9780120299126

The volumes during this sequence disguise the development and innovation in optical and electron microscopy at a primary point. it truly is geared toward microscopists and researchers not just attracted to microscope instrumentation but additionally in purposes starting from organic options to fabrics study and business inspection

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Extra resources for Advances in optical and electron microscopy

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A. Effect of restricted coherence Electron interference may be understood as a phenomenon of the wave function of the single electron. As there is in reality only one electron in the wave function, at most, we would only see the interference pattern of the wave if we could repeat the experiment under identical conditions many times, summing up all events in the interference plane at the same detector. Instead, in an electron microscope we are dealing with an ensemble of electrons with slightly varying wave numbers /c, distribution F(k\ emitted from different points (ξ, η) of the electron source with an intensity distribution ί(ξ9 η).

Lateral resolution and field of view The criteria for the quality of an image are the extent of the field of view and the lateral resolution; these call for the highest possible number and smallest possible size of pixels. As the number of pixels transferable by means of holography is limited, resolution and field of view are not independent but have to be adapted to the intended application. e. by the width of the aperture isolating the spectrum from the complete Fourier spectrum of the hologram.

10 Numerically reconstructed image wave from an MgO crystal. The hologram was scanned by a densitometer camera and the digitized data of optical density were fed into the computer. All reconstruction steps were performed numerically; amplitude and phase can be displayed on a monitor or evaluated numerically. Example reconstructed by Franke (1986). A: Reconstructed area of the MgO hologram. B: Only the framed part of the calculated Fourier spectrum was used for reconstruction. C: Amplitude, and D: Phase of the reconstructed MgO image wave.

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Advances in optical and electron microscopy by Tom Mulvey, Charles J.R. Sheppard

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