STUDIES ON THE INSTRUMENTAL FACTORS DETERMINING ERRORS IN THE MEASUREMENTS OF RAMAN BAND PROFILES .2. EFFECT OF THE SIGNAL-NOISE ON VIBRATIONAL-RELAXATION FUNCTIONS AND RELAXATION-TIMES

Authors
GIORGINI MG MARIANI L MORRESI A PALIANI G CATALIOTTI RS
Citation
Mg. Giorgini et al., STUDIES ON THE INSTRUMENTAL FACTORS DETERMINING ERRORS IN THE MEASUREMENTS OF RAMAN BAND PROFILES .2. EFFECT OF THE SIGNAL-NOISE ON VIBRATIONAL-RELAXATION FUNCTIONS AND RELAXATION-TIMES, Applied spectroscopy, 47(8), 1993, pp. 1234-1236
Citations number
16
Categorie Soggetti
Instument & Instrumentation",Spectroscopy
Journal title
Applied spectroscopy → ACNP
ISSN journal
00037028
Volume
47
Issue
8
Year of publication
1993
Pages
1234 - 1236
Database
ISI
SICI code
0003-7028(1993)47:8<1234:SOTIFD>2.0.ZU;2-E
Abstract
A method for the determination of the effect of the signal noise on vi brational correlation functions and relaxation times obtained in stati onary spectroscopic measurements is proposed. It rests upon the assump tion that electronic noise is mainly due to the photon counting which, for fast electronics, is described by Poisson statistics. The applica tion of this method leads to results expressed as standard deviations which, for correlation functions, appear in very close agreement with the conclusions of statistical analysis, while for the relaxation time s the results are lower than those delivered by statistical analysis.