Determination of Atomic and Molecular Excited-State Lifetimes Using an Optoelectronic Cross-Correlation Method
- 1 March 1982
- journal article
- research article
- Published by SAGE Publications in Applied Spectroscopy
- Vol. 36 (2) , 92-99
- https://doi.org/10.1366/0003702824638791
Abstract
A new optoelectronic cross-correlation technique has been used to measure excited-state lifetimes of several organic fluorophores in solution and of sodium atoms in both air-acetylene and methane-air flames. Capable of time resolution in the picosecond range, the new method was validated by the excellent agreement between measured and literature values for fluorescence lifetimes of the organic species. Lifetime values for Na atoms in flames are among the most precise ever reported and agree closely with values calculated from the known flame gas composition, temperature, and the quenching cross-sections of the two dominant quenching species in the flame, N2 and CO2. From the Na excited-state lifetimes (0.72 ± 0.07 ns for air-acetylene and 0.48 ± 0.08 ns for methane-air flames), quantum efficiencies for atomic fluorescence were calculated.Keywords
This publication has 40 references indexed in Scilit:
- Time-resolved spectroscopy with subpicosecond ultraviolet pulsesOptics Communications, 1976
- Direct generation of transform-limited sub-picosecond pulses in a mode-locked CW dye laserOptics Communications, 1976
- Generation of 530–670 nm and 265–335 nm picosecond pulses in a CW dye laser by mode-locked synchronous pumpingOptics Communications, 1976
- An optical up-conversion light gate with picosecond resolutionOptics Communications, 1975
- Pulse generation in a cw dye laser by mode−locked synchronous pumpingApplied Physics Letters, 1975
- Bestimmung von Löschquerschnitten durch Lebensdauermessungen am Natrium-32 P-ZustandThe European Physical Journal A, 1969
- The determination of cross-sections for the quenching of resonance radiation of metal atoms. IV. Results for lithiumProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1968
- The determination of cross sections for quenching of resonance radiation of metal atoms III. Results for thalliumProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1968
- The determination of cross sections for the quenching of resonance radiation of metal atoms II. Results for potassium, rubidium and caesiumProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1968
- The determination of cross sections for the quenching of resonance radiation of metal atoms I. Experimental method and results for sodiumProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1966