Energy enhancement factor

Energy of activation, see activation energy Enhancement factor, see Faradaic efficiency Enthalpy... 

E energy enhancement factor in chemisorption eq. (14.50) activation energy in chemical reactions efficiency factor of the absorption process (Section 10.3.2)... 

Clearly, we have f3 < 1. The interaction with further neighbours is attractive and leads to a contraction of intermolecular distances. The energy of the trimer at the equilibrium distance is easily calculated. For the purpose of comparison we introduce a dimensionless energy enhancement factor d3 which refers to the energy per nearest neighbour interaction ... 

DP E F f f. Ha He AG Degree of polymerization Activation energy, enhancement factor for gas-liquid mass transfer with reaction, electrochemical cell potential Faraday constant, F statistic Efficiency of initiation in polymerization Ca/CaQ or na/nao, fraction of A remaining unconverted Hatta number Henry constant for absorption of gas in liquid Free energy change kj/kgmol Btu/lb-mol... 

Dk DP E Knudsen diffusivity Degree of polymerization Activation energy, enhancement factor for gas-liquid mass transfer with reaction. mVs ft"/s... 

ZEBRA 567 energy efficiency 15 enhancement factor, lithium alloys 367 enhancing cation mobility 518 enthalpy 9... 

The high value of the electron density at the nucleus leads to the enhancement of the electron EDM in heavy atoms. The other possible source of the enhancement is the presence of small energy denominators in the sum over states in the first term of Eq.(29). In particular, this takes place when (Eo — En) is of the order of the molecular rotational constant. (It is imperative that a nonperturbative treatment be invoked when the Stark matrix element e z(v /0 z v / ) is comparable to the energy denominator (Eq En) [33].) Neglecting the second term of the right-hand side of Eq.(29), which does not contain this enhancement factor [8, 27], we get... 

Figure 6. Isotopic enhancement factor for 0 in OJ as a function of ionizing energy and 02/He ratio at a constant ion source inlet pressure of 0.75 torr.

An alternative way to see this effect is to consider the enhancement factor over local exchange in PW91. We may write any GGA energy, for spin-unpolarized systems, as... 

Flo. 3. (a) Enhancement factor R(e) as a function of the energy relative to the Fermi level for field emission from a CO/Ir(100). (b) Schematic representation of the CO levels that give rise to the enhanced emission just below the Fermi level (51). 

HAN83] G. Hansen and A. S. Jensen, "Energy Dependence of the Rotational Enhancement Factor in the Level Density," IAEA Advisory Group Meeting on Basic and Applied Problems of Nuclear Level Densities, Brookhaven National Laboratory, Upton, NY, BNL-NCS-51694 (1983), p. 161. 

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