Angular momentum effects

The measurement of mass flow can be obtained by multiplying the volumetric flow with density or by the direct measurement of Coriolis, thermal, impact, and angular momentum effects. 

A comparison between the predictions of KFR theory [496], in which ponderomotive and angular momentum effects are included, and experimental data [497] is shown in fig. 9.7. 

It was concluded in ref. 113 that conventional RRKM theory is a good approximation for thermal and bulk chemical activation systems if there are sufiiciently pronounced maxima in the electronic potential, and if angular momentum effects are not important. One has a sequence of inequalities for similar to equation (52) ... 

The chemical activation results with E - = 0.0 and 0.5 kcal/mol are nearly the same as the random excitation results at the same total energy. As above, the minor differences are due to angular momentum effects. Somewhat surprisingly, initially exciting the C2 moiety in the chemical activation calculations does not result in a highly excited C2 product. This is illustrated by comparing the chemical activation results with E ei = 5.63 kcal/mol and E ib =... 

To use the RRKM theory to calculate relative translational energy distributions at the critical configuration only the frequencies and structure of the critical configuration are required. Information concerning the activated molecule is unnecessary. If angular momentum effects are unimportant, the RRKM relative translational energy distribution at the critical configuration is ... 

Song K and Chesnavich W J 1990 Multiple transition state in chemical reactions. II. The effect of angular momentum in variational studies of HO2 and HeH2 systems J. Chem. Phys. 93 5751-9... 

An effect of space quantization of orbital angular momentum may be observed if a magnetic field is introduced along what we now identify as the z axis. The orbital angular momentum vector P, of magnitude Pi, may take up only certain orientations such that the component (Pi) along the z axis is given by... 

The quantum generalization of the APR Hamiltonian results after supplementing this classical Hamiltonian with a non-commuting angular momentum part [Lj, p] = -ihSji which introduces quantum dispersion and thus qualitatively new effects due to additional fluctuations and tunnehng. 

Valence orbital Xij is the lowest energy solution of equation 9.23 only if there are no core orbitals with the same angular momentum quantum number. Equation 9.23 can be solved using standard atomic HF codes. Once these solutions are known, it is possible to construct a valence-only HF-like equation that uses an effective potential to ensure that the valence orbital is the lowest energy solution. The equation is written... 

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