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Nachweisgrenze schwacher R AMAN ‐Linien auf Photoplatten I. Spektraldichte von Signal und Korn‐Noise
Author(s) -
Frei K.,
Günthard Hs. H.
Publication year - 1958
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19580410709
Subject(s) - chemistry , signal (programming language) , noise (video) , deflection (physics) , spectral density , physics , optics , statistics , mathematics , artificial intelligence , computer science , image (mathematics) , programming language
The information content of a photoplate is assumed to consist of G AUSS ian cornnoise and a periodic signal, expressed as a P OISSON sum of single signals. Its power spectrum after passing through the photometer is calculated as a function of the dimensions of the rectangular slit, plate speed, recording speed and the time constant of the amplifier. Means and variance of noise and signal are derived for use in a deflection criterion, expressing the detectability of signals in noise.