Kinetics of decay of excited states of Eu2+ in NaBr - Eu2+ - TR3+ crystals

1977 ◽  
Vol 27 (2) ◽  
pp. 1082-1082
Author(s):  
V. F. Pisarenko ◽  
B. D. Suyatin ◽  
A. N. Kiyanov ◽  
I. N. Isachenko
Keyword(s):  
Excited States ◽  
Kinetics Of ◽  
Decay Of Excited States

Gamma Decay of Excited States inBi210and an Interpretation with the Shell Model

1973 ◽  
Vol 7 (5) ◽  
pp. 2137-2150 ◽  
Author(s):  
D. Proetel ◽  
F. Riess ◽  
E. Grosse ◽  
R. Ley ◽  
M. R. Maier ◽  
...  
Keyword(s):  
Shell Model ◽  
Excited States ◽  
Gamma Decay ◽  
Decay Of Excited States

The kinetics of elementary reactions involving the oxides of sulphur II. Chemical reactions in the sulphur dioxide afterglow

1966 ◽  
Vol 295 (1443) ◽  
pp. 363-379 ◽  
Keyword(s):  
Excited States ◽  
Sulphur Dioxide ◽  
Kinetic Studies ◽  
Absolute Intensity ◽  
Third Order ◽  
Elementary Reactions ◽  
The Third ◽  
Dominant Process ◽  
Recombination Reactions ◽  
Kinetics Of

The main recombination reactions in the sulphur dioxide afterglow are shown to be O + SO 2 + M = SO 3 + M (1) and O + SO + M = SO 2 + M , (2) with rate constants of (4·7 ± 0·8) x 10 15 and (3·2 ± 0·4) x 10 17 cm 6 mole -2 s -1 respectively at 300°K for M = Ar. Reaction (2) is the dominant process removing sulphur monoxide (SO) which is otherwise remarkably unreactive. The absolute intensity of the sulphur dioxide afterglow is found to be I = 1·5 x 10 8 [O] [SO] cm 3 mole -1 s -1 for argon carriers at pressures between 0·25 an d 3·0 mmHg. The afterglow emission comes from three excited states of SO 2 . Spectroscopic and kinetic studies show that these are populated subsequent to or by the third order combination reaction (2). Excited SO 2 is removed mainly by electronic quenching.

Reduction of hexaammineruthenium(III) ions by a series of tris(polypyridyl)chromium(II) ions – Revisiting the Cr(NN)33+/2+ self-exchange rate

2001 ◽  
Vol 79 (7) ◽  
pp. 1124-1127 ◽  
Author(s):  
K Omar Zahir
Keyword(s):  
Exchange Rate ◽  
Excited States ◽  
Rate Constants ◽  
Driving Force ◽  
Flash Photolysis ◽  
Laser Flash Photolysis ◽  
Outer Sphere ◽  
Laser Flash ◽  
Exchange Rate Constant ◽  
Kinetics Of

The kinetics of the outer-sphere oxidation of Cr(NN)32+ ions (NN = 2,2'-bipyridine, 1,10-phenanthroline, and their substituted analogs) by hexaammineruthenium(III) was studied using laser flash photolysis. The Cr(NN)32+ ions were generated via the reductive quenching of the *Cr(NN)33+ excited states by oxalate ions or by H2edta2–. The second-order rate constants were found to vary with the driving force of the reaction. The rate constants increase from (7.1 ± 0.5) × 106 M–1 s–1 for Cr(5-Clphen)32+ to (2.6 ± 0.2) × 108 M–1 s–1 for Cr(4,7-Me2phen)32+. The self-exchange rate constant for the couple (Cr(NN)33+/2+) was calculated by applying Marcus cross relation to present and other known reactions of Cr(NN)3n+ ions, where n = 3 or 2 with various reactants and is estimated to be (6 ± 4) × 107 M–1 s–1.Key words: tris(polypyridyl)chromium(II)/(III) self-exchange rate, hexaammineruthenium(III), oxidation of Cr(NN)32+.

Oxygen diffusion dynamics in organic semiconductor films

2015 ◽  
Vol 3 (39) ◽  
pp. 10079-10084 ◽  
Author(s):  
Safa Shoaee ◽  
James R. Durrant
Keyword(s):  
Excited States ◽  
Absorption Spectroscopy ◽  
Organic Semiconductor ◽  
Oxygen Diffusion ◽  
Transient Absorption ◽  
Transient Absorption Spectroscopy ◽  
Semiconductor Films ◽  
Diffusion Dynamics ◽  
Kinetics Of

Transient absorption spectroscopy is commonly used to probe the yield and kinetics of excited states of materials.

State-Resolved Dynamics of Dissociation of Triplet Acetaldehyde:  Rate of Appearance of Fragment HCO and Decay of Excited States of Parent Molecule†

2000 ◽  
Vol 104 (45) ◽  
pp. 10362-10367 ◽  
Author(s):  
Cheng-Liang Huang ◽  
Volume Chien ◽  
Chi-Kung Ni ◽  
A. H. Kung ◽  
I-Chia Chen
Keyword(s):  
Excited States ◽  
Parent Molecule ◽  
Decay Of Excited States
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