Flash spectroscopy with mercury resonance radiation. Part 1.—An experimental method with microwave-pulse excitation

1970 ◽  
Vol 66 (0) ◽  
pp. 605-614 ◽  
Author(s):  
A. B. Callear ◽  
R. E. M. Hedges
Keyword(s):  
Experimental Method ◽  
Microwave Pulse ◽  
Resonance Radiation ◽  
Pulse Excitation ◽  
Flash Spectroscopy

Monochromatic Flash Spectroscopy with Mercury Resonance Radiation

Nature ◽  
1968 ◽  
Vol 218 (5137) ◽  
pp. 163-165 ◽  
Author(s):  
A. B. CALLEAR ◽  
R. E. M. HEDGES
Keyword(s):  
Resonance Radiation ◽  
Flash Spectroscopy

scholarly journals Resonance Fluorescence of Fused Silica by the Depopulation of the Ground State

2012 ◽  
Vol 2012 ◽  
pp. 1-3 ◽  
Author(s):  
Fuat Bayrakceken ◽  
Korkut Yegin
Keyword(s):  
Silicon Dioxide ◽  
Optical Fibers ◽  
Laser Flash ◽  
Fused Silica ◽  
Photon Flux ◽  
Pulse Excitation ◽  
Resonance Fluorescence ◽  
Photon Pulse ◽  
Fluorescence Line ◽  
Flash Spectroscopy

Spectroscopically pure fused silica has been used in many applications ranging from optoelectronics and optical fibers to laser flash spectroscopy. Although ultraviolet light irradiated optical absorption spectra and coherence fluorescence of silicon dioxide have been studied in the past, we present discrete absorption and resonance coherent fluorescence line of silicon dioxide which were recorded photographically at 288.2 nm. This discrete fluorescence is observed at room temperature using high photon flux (1024photon/pulse) excitation spectroscopy.

Techniques of microwave-pulse flash-spectroscopy

1970 ◽  
Vol 66 ◽  
pp. 1289 ◽  
Author(s):  
A. B. Callear ◽  
J. Guttridge ◽  
R. E. M. Hedges
Keyword(s):  
Microwave Pulse ◽  
Flash Spectroscopy

Flash spectroscopy with cadmium resonance radiation

1970 ◽  
Vol 5 (1) ◽  
pp. 17-19 ◽  
Author(s):  
W.H. Breckenridge ◽  
A.B. Callear
Keyword(s):  
Resonance Radiation ◽  
Flash Spectroscopy

The determination of cross sections for the quenching of resonance radiation of metal atoms I. Experimental method and results for sodium

1966 ◽  
Vol 293 (1435) ◽  
pp. 493-511 ◽  
Keyword(s):  
Experimental Method ◽  
Cross Sections ◽  
Resonance Radiation ◽  
Line Broadening ◽  
Compound Formation ◽  
Metal Atoms ◽  
Sodium Atoms ◽  
The Cross ◽  
Oxygen Flame

A method of determining the cross sections for the quenching of excited metal atoms by molecules and atoms which may be present in flames is described. The method has been applied to the quenching of sodium atoms in the 3 p 2 P state and the following results (in Å 2 ) for the square of the distance between the centres of colliding species, σ 2 , obtained: σ 2 H 2 = 2.87 ± 0.1; σ 2 N 2 = 6.95 ± 0.15; σ 2 CO = 11.9 ± 0.4; σ 2 CO 2 = 17.0 ± 0.4; σ 2 H 2 O = 0.5 ± 0.3; σ 2 O 2 = 12.3 ± 0.5; σ 2 Ar < 0.1; σ 2 He < 0.1. These cross sections have been measured at temperatures in the range 1400°K to about 1800°K and found to be independent of the temperature. The values for the cross sections are derived from measurements of the fluorescence of sodium in hydrogen-oxygen flame diluted with various other gases. This method is believed to be free of uncertainties due to self-absorption, compound formation, line broadening effects and uncertain velocity distributions. Where values for cross sections have been obtained by other workers they are compared with these results and possible reasons for the discrepancies are discussed.

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