Fluence-dependent dynamics of localized excited species in monolayer versus bulk 
MoS2

The photodecomposition of acetone vapor at 255 °C sensitized by Cd 3P1 atoms has been investigated. On irradiation of the Cd–acetone system at 3261 Å, both direct and sensitized reaction occur. CO and CH4 are the only significant volatile products, and their yield is decreased by addition of SF6 as inert quenching gas. The required participation of triplet acetone molecules in the sensitized reaction and the virtual identity of the direct and sensitized decompositions provide additional evidence for the importance of this excited species in direct photolysis.

Download Full-text

Deactivation of O(1S) and O2(b1Σg+)

Canadian Journal of Chemistry ◽

10.1139/v69-306 ◽

1969 ◽

Vol 47 (10) ◽

pp. 1870-1877 ◽

Cited By ~ 55

Author(s):

F. Stuhl ◽

K. H. Welge

Keyword(s):

Rate Constants ◽

Excited Species ◽

Intensity Decay

Rate constants for the collisional deactivation of O(1S) and O2(b1Σg+) are reported. They are obtained by measuring the intensity decay of the O(1S → 1D) and O2(b1Σg+ → X2Σg+) emissions after a pulsed production of the excited species.

Download Full-text

The Dielectric Discharge as an Efficient Generator of Active Nitrogen for Chemiluminescence and Analysis

Applied Spectroscopy ◽

10.1366/0003702834634703 ◽

1983 ◽

Vol 37 (6) ◽

pp. 545-552 ◽

Cited By ~ 3

Author(s):

John Kishman ◽

Eric Barish ◽

Ralph Allen

Keyword(s):

Gas Phase ◽

Ground State ◽

Band System ◽

Electrothermal Atomization ◽

Characteristic Radiation ◽

Gaseous Species ◽

Vibrationally Excited ◽

Active Nitrogen ◽

Excited Species ◽

Intense Emission

A predominantly blue “active nitrogen” afterglow was generated in pure flowing nitrogen or in air by using a dielectric discharge at pressures from 1 to 20 Torr. The afterglow contains triplet state molecules and vibrationally excited ground state molecules. These species are produced directly by electron impact without the formation and recombination of nitrogen atoms. The most intense emission is the N2 second positive band system. The N2 first positive and N2+ first negative systems are also observed. The spectral and electrical properties of this discharge are discussed in order to establish guidelines for the analytical use of the afterglow for chemiluminescence reactions. The metastatic nitrogen efficiently transfers its energy to atomic and molecular species which are introduced into the gas phase and these excited species emit characteristic radiation. The effects of electrothermal atomization of Zn and the introduction of gaseous species (e.g., NO) on the afterglow are described.

Download Full-text

The kinetic theory of hot reactions. Reactions of ions and excited species

Australian Journal of Chemistry ◽

10.1071/ch9760681 ◽

1976 ◽

Vol 29 (3) ◽

pp. 681

Author(s):

FCR Cattell

Keyword(s):

Kinetic Theory ◽

High Energy ◽

Excited Atoms ◽

Halogen Atoms ◽

Excited Species ◽

Sufficient Proof

Removal of a product in a manner which conforms to the Estrup-Wolfgang kinetic theory is not sufficient proof that kinetic excitation alone is involved. There may therefore be a need to reappraise some high-energy reactions of heavy halogen atoms where reactions of charged and excited atoms are likely to interfere.

Download Full-text