Electronic excitation of K atoms in collisions with diatomic molecules: Thresholds and energy dependence from 1–5 eV

Kempter, V.; Mecklenbrauck, W.; Menzinger, Michael; Schuller, G.; Herschbach, D. R.; Schlier, Ch.

doi:10.1016/0009-2614(70)80142-7

Cited by 38 publications

(1 citation statement)

References 23 publications

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“…4. Briefly, it consists of a pulsed sputtering source, a cylindrical scattering chamber 10 cm long and 8 cm in diameter, an EMI 9558B photomultiplier for the detection of photons, and a surface ionization detector for monitoring the sputtered alkali beam.…”

Section: Experimental Conditionsmentioning

confidence: 99%

Electronic Excitation in Fast Collisions of Na with SO2 and NO2

Lebreton

Mecklenbrauck

Schultz

et al. 1971

The Journal of Chemical Physics

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A sputtered Na beam has been used to investigate collisionally induced electronic excitation in scattering with S02 and N02. Light from the radiative decay of excited electronic states was observed at several wavelengths, and measurements were made of the excitation cross sections as a function of the centerof-mass collision energy in the range 1-30 eV. In both scattering systems, the most intense light measured originated from the Na (3 2 P->3 2 S) D line. Light from the (42D->3 2 P) Na transition was observed but its intensity was more than an order of magnitude smaller than that of the D line. Emission also occ~rred from transitions with long radiative lifetimes (~40 !-,sec). This emission is probably due to the Bl->AI molecul~r trans~tions of S02 and N02. The results have been discussed in terms of a potential curve-crossing mechamsm which seems to satisfactorily explain collisionally induced alkali atom excitation. For the molecular emission, an alternate mechanism has also been considered which involves vibrational coupling of the Al and BI states.

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Section: Experimental Conditionsmentioning

confidence: 99%

Electronic Excitation in Fast Collisions of Na with SO2 and NO2

Lebreton

Mecklenbrauck

Schultz

et al. 1971

The Journal of Chemical Physics

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Chemiluminescence

Bronstein¹,

Kricka

Givens

2000

Kirk-Othmer Encyclopedia of Chemical Technology

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Chemiluminescence is the emission of light from chemical reactions at ordinary temperatures. The reactions of chemiluminescence produce a reaction intermediate or product in an electronically excited state, and radiative decay of the excited state is the source of the light. Chemiluminescence relates to fundamental molecular interactions and transformations and its study provides access to basic elements of reaction mechanisms and molecular properties, efficient chemiluminescence can provide an emergency or portable light source, chemiluminescence provides means to detect and measure trace elements and pollutants for environmental control or clinically important substances, and classification of the bioluminescent relationship between different organisms defines their biological relationship and pattern of evolution. Liquid‐phase, gas‐phase, and solid‐phase chemiluminescence are discussed as well as bioluminescence, which is characteristic of numerous marine and a few land organisms. The applications of chemical light include marking and illumination and several types of analyses such as flow injection, hplc, direct metal, titration indicators, immunoassay, bacteria and biomass determination, and air pollution.

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Sensitized Fluorescence and Quenching

Krause

1975

Advances in Chemical Physics

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Electronic excitation of K atoms in collisions with diatomic molecules: Thresholds and energy dependence from 1–5 eV

Cited by 38 publications

References 23 publications

Electronic Excitation in Fast Collisions of Na with SO2 and NO2

Electronic Excitation in Fast Collisions of Na with SO2 and NO2

Chemiluminescence

Sensitized Fluorescence and Quenching

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