Energy transfer and energy pooling collisions in Li-Cd system

1995 ◽  
Author(s):  
G. Pichler ◽  
D. Azinović ◽  
S. Milošević
Keyword(s):  
Energy Transfer ◽  
Energy Pooling

Coherent population trapping studied through energy transfer and energy-pooling collisions

1999 ◽  
Vol 160 (1-3) ◽  
pp. 75-79 ◽  
Author(s):  
S Gozzini ◽  
P Sartini ◽  
C Gabbanini ◽  
A Lucchesini ◽  
L Moi ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Coherent Population Trapping ◽  
Energy Pooling ◽  
Population Trapping

The formation, reaction and deactivation of O 2 ( 1 Ʃ + g )

1968 ◽  
Vol 308 (1492) ◽  
pp. 81-94 ◽  
Keyword(s):  
Energy Transfer ◽  
Molecular Oxygen ◽  
Transfer Process ◽  
Rate Constants ◽  
Atomic Oxygen ◽  
Energy Transfer Process ◽  
Formation Reaction ◽  
Upper Limit ◽  
Excited Species ◽  
Energy Pooling

The paper describes an investigation of the reaction with ozone and the deactivation of O 2 ( 1 Ʃ + g ). A flow technique was employed, and O 2 ( 1 Ʃ + g ) was produced photochemically by the sequence of reactions: O 2 + hv (λ=1470Å) → O( 1 D ) + O( 3 P ), (4) O( 1 D ) + O 2 ( 3 Ʃ - g ) → O 2 ( 1 Ʃ + g ) + O( 3 P ). (5) The advantages achieved by this method of generation of the excited species are discussed. Rate constants were obtained for the reaction of O 2 ( 1 Ʃ + g ) with ozone, and for its quenching by N 2 , and an estimate is made of the efficiency of wall deactivation. An upper limit is suggested for the quenching of O 2 ( 1 Ʃ + g ) by molecular oxygen. The results are compared with those of earlier investigations, and the comparison is used to calculate the rate constant of the ‘energy-pooling’ reaction: O 2 ( 1 ∆ g ) + O 2 ( 1 ∆ g ) → O 2 ( 1 Ʃ + g ) + O 2 ( 3 Ʃ - g ). (1) Measurement of the concentrations of O 2 ( 1 Ʃ + g ) and of atomic oxygen formed on photolysis allows the efficiency of the energy transfer process (5) to be assessed relative to the efficiency of quenching by O 2 , N 2 or Ar. The several rate constants measured or estimated are tabulated at the end of the paper in table 3.

Vibrationally Energy Pooling via Collisions between Asymmetric Stretching Excited CO2: A Quasi-Classical Trajectory Study on An Accurate Full-dimensional Potential Energy Surface

2021 ◽  
Author(s):  
Dandan Lu ◽  
Jun Chen ◽  
Hua Guo ◽  
Jun Li
Keyword(s):  
Energy Transfer ◽  
Low Temperature ◽  
Potential Energy ◽  
Potential Energy Surface ◽  
Energy Surface ◽  
Classical Trajectory ◽  
Highly Efficient ◽  
Energy Pooling ◽  
Low Temperature Plasmas

In low temperature plasmas, energy transfer between asymmetric stretching excited CO2 molecules can be highly efficient, which leads to further excitation (and de-excitation) of the CO2 molecules: CO2(vas) + CO2(vas)...

A quantitative approach to inner shell losses

1978 ◽  
Vol 36 (1) ◽  
pp. 526-527 ◽  
Author(s):  
R.D. Leapman ◽  
P. Rez ◽  
D.F. Mayers
Keyword(s):  
Energy Transfer ◽  
Cross Section ◽  
Cross Sections ◽  
Accurate Determination ◽  
Background Intensity ◽  
Core Excitation ◽  
Quantitative Basis ◽  
Cross Section Differential ◽  
Bound Electrons

Microanalysis by EELS has been developing rapidly and though the general form of the spectrum is now understood there is a need to put the technique on a more quantitative basis (1,2). Certain aspects important for microanalysis include: (i) accurate determination of the partial cross sections, σx(α,ΔE) for core excitation when scattering lies inside collection angle a and energy range ΔE above the edge, (ii) behavior of the background intensity due to excitation of less strongly bound electrons, necessary for extrapolation beneath the signal of interest, (iii) departures from the simple hydrogenic K-edge seen in L and M losses, effecting σx and complicating microanalysis. Such problems might be approached empirically but here we describe how computation can elucidate the spectrum shape.The inelastic cross section differential with respect to energy transfer E and momentum transfer q for electrons of energy E0 and velocity v can be written as

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