Pressure and temperature dependence of laser‐induced fluorescence of Sm:YAG to 100 kbar and 700 °C and an empirical model

1990 ◽  
Vol 68 (5) ◽  
pp. 1953-1960 ◽  
Author(s):  
Nancy J. Hess ◽  
David Schiferl
Keyword(s):  
Temperature Dependence ◽  
Empirical Model ◽  
Laser Induced Fluorescence

Temperature dependence of the parameters of laser-induced fluorescence and species composition of phytoplankton: The theory and the experiments

2019 ◽  
Vol 44 ◽  
pp. 101719 ◽  
Author(s):  
S.S. Voznesenskiy ◽  
E.L. Gamayunov ◽  
A.Yu. Popik ◽  
Zh.V. Markina ◽  
T.Yu. Orlova
Keyword(s):  
Species Composition ◽  
Temperature Dependence ◽  
Laser Induced Fluorescence

scholarly journals Evaluating Thermographic Phosphors in an Operating Turbine Engine

1990 ◽  
Author(s):  
B. W. Noel ◽  
H. M. Borella ◽  
W. Lewis ◽  
W. D. Turley ◽  
D. L. Beshears ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Field Test ◽  
Decay Time ◽  
Measurement Method ◽  
Laser Induced Fluorescence ◽  
Remote Measurement ◽  
Turbine Engine ◽  
Thermographic Phosphors ◽  
Thermographic Phosphor ◽  
Engine Components

The results of a field test in a commercial turbine engine showed that we can remotely measure the temperature of engine components in operating engines using thermographic phosphors. The remote-measurement method exploits the temperature dependence of the characteristic decay time of the laser-induced fluorescence of thermographic phosphors. This paper summarizes recent work leading up to and including a successful test of the thermographic-phosphor method in an operating turbine engine.

Photoluminescence of Self-Trapped Excitons in Boron Nitride Nanotubes

2008 ◽  
Vol 8 (12) ◽  
pp. 6504-6508 ◽  
Author(s):  
R. T. Williams ◽  
K. B. Ucer ◽  
D. L. Carroll ◽  
B. Berzina ◽  
L. Trinkler ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Temperature Dependence ◽  
Empirical Model ◽  
Boron Nitride Nanotubes ◽  
Surface Reconstructions ◽  
Unusual Combination ◽  
Powder Samples ◽  
Multiwall Nanotubes ◽  
Low Dimensional ◽  
Bn Nanotubes

The excitation energy dependence and temperature dependence of photoluminescence from boron nitride nanotubes and hexagonal BN powder samples are reported. The results are discussed within a model attributing the broad 3.2 eV luminescence from these samples to self-trapped excitons in the low-dimensional structures of BN nanotubes and of nano-arch surface reconstructions on h-BN sheet edge faces in powder. An empirical model accounting for the unusual combination of excitation and temperature dependence of photoluminescence seen in these measurements is suggested. For the model to be consistent with the hypothesis of self-trapped excitons on BN nanotubes, it may be necessary to show that the cores of multiwall nanotubes are selectively probed by light tuned below the h-BN exciton.

Kinetics of the reaction of the simplest Criegee intermediate with ammonia: a combination of experiment and theory

2018 ◽  
Vol 20 (47) ◽  
pp. 29669-29676 ◽  
Author(s):  
Yiqiang Liu ◽  
Cangtao Yin ◽  
Mica C. Smith ◽  
Siyue Liu ◽  
Maodu Chen ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Rate Coefficient ◽  
Negative Temperature ◽  
Laser Induced Fluorescence ◽  
Fluorescence Method ◽  
Kinetics Of

The negative temperature dependence of the rate coefficient for CH2OO + NH3 reaction was observed using an OH laser-induced fluorescence method.

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