коллимация

коллимация

The ideal input beam is a cylinder of light. No beam of finite dimensions can be perfectly collimated; at best there is a diffraction limit. In practice the input beam is a cone that is determined by the source size or aperture used. The degree of collimation can affect the S/N and the resolution

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Parte del discorso: sostantivo
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Settore/Dominio: Chimica
Categoria: Spettroscopia
Company: Newport
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бірігіп қосу

Chimica; Spettroscopia

The process of adding interferograms together to achieve an improvement in signal-to-noise ratio.

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The sharp, intense part of an interferogram. The size of the centerburst is directly proportional to the amount of infrared radiation striking the detector.

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Chimica; Spettroscopia

With no apodization, all points in an interferogram are given equal weight, up to the edges of the interferogram. If the resolution is less than the smallest linewidth in the ...

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Chimica; Spettroscopia

A spectral manipulation technique used to correct spectra with sloped or varying baselines. The user must draw a function parallel to the baseline, then this function is ...

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Chimica; Spettroscopia

A single beam spectrum acquired with no sample in the infrared beam. The purpose of a background spectrum is to measure the contribution of the instrument and environment to the ...

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Chimica; Spettroscopia

A reflectance sampling technique. In ATR, infrared radiation impinges on a prism of infrared transparent material of high refractive index. The total internal reflectance based ...