TY - JOUR
T1 - Simultaneous comparison of fluorescence spectrometry with multiphoton ionization spectrometry using a supersonic jet spectrometer
AU - Lin, Cheng Huang
AU - Hozumi, Masami
AU - Imasaka, Totaro
AU - Ishibashi, Nobuhiko
N1 - Copyright:
Copyright 2007 Elsevier B.V., All rights reserved.
PY - 1991
Y1 - 1991
N2 - The ratio of the signal intensities obtained in multiphoton ionization spectrometry and fluorescence spectrometry is compared semi-quantitatively for several aromatic compounds. The ratios, normalized against N-ethylaniline, are 0.2-1 for aniline derivatives, however, the value for anthracene is 7 × 10-6 in a one-colour ionization scheme and 7 × 10-4 in a two-colour ionization scheme. The small value obtained for the] large' aromatic compound is ascribed to the high ionization potential relative to the two-photon energy for excitation and subsequent ionization; three photons are required in the one-colour scheme and an additional laser with sufficient energy must be aligned temporally and spatially for ionization in the two-colour scheme.
AB - The ratio of the signal intensities obtained in multiphoton ionization spectrometry and fluorescence spectrometry is compared semi-quantitatively for several aromatic compounds. The ratios, normalized against N-ethylaniline, are 0.2-1 for aniline derivatives, however, the value for anthracene is 7 × 10-6 in a one-colour ionization scheme and 7 × 10-4 in a two-colour ionization scheme. The small value obtained for the] large' aromatic compound is ascribed to the high ionization potential relative to the two-photon energy for excitation and subsequent ionization; three photons are required in the one-colour scheme and an additional laser with sufficient energy must be aligned temporally and spatially for ionization in the two-colour scheme.
UR - http://www.scopus.com/inward/record.url?scp=0025936583&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0025936583&partnerID=8YFLogxK
U2 - 10.1039/AN9911601037
DO - 10.1039/AN9911601037
M3 - Article
AN - SCOPUS:0025936583
VL - 116
SP - 1037
EP - 1041
JO - The Analyst
JF - The Analyst
SN - 0003-2654
IS - 10
ER -