Axis switching effects

The bending motion of the precursor molecule results in a so-called dynamic axis switching effect (53). This effect is connected with a small deviation of the diatomic axis from the equilibrium axis of the bound triatomic molecule. It turns out that this effect is important for large values of j and makes a noticeable contribution to the partitioning of j into diatomic angular momentum and the relative angular momentum of the atom about the fragment. 

Molecules Axis-Switching Effects and Transformation of Normal Coordinates. 

The goal of this work has been to characterize the effects of the unsteady vor-ticity dynamics on jet entrainment and nonpremixed combustion. The main focus of the numerical simulations of rectangular jets has been on the vortic-ity dynamics underlying axis switching when the initial conditions at the jet exit involve laminar conditions, negligible streamwise vorticity, and negligible azimuthal nonuniformities of the momentum thickness. 

Grinstein, F.F. 1997. Entrainment, axis-switching, and aspect-ratio effects in rectangular jets. AIAA Paper No. 97-1875. 

Morse, M.D. and Freed, K.F. (1981). Rotational and angular distributions from photodissociations. III. Effects of dynamic axis switching in linear triatomic molecules, J. Chem. Phys. 74, 4395-4417. 

The two switching effects are dis rfayed in Figure 83. The electroclinic effect (a) has been discussed in Sectioo 0. The flekt-induced helical unwinding (b) is caused by the coupling of the spontaneous polarization Pj to an external held. Both effects lead to a rotatioo of the optical axis in the film plane. The sample is placed between crossed polarizers and, due to the rotatioa of the optical axis, the intensity of the transmitted light can be modulated by the applied field. The induced tilt of the optical axis has been found to be a linear function of the applied field. In the case of short-pitch ferroelectric PDLC, the tilt can be about 13 at an at lied field of 10 V/pjn (Fig. M). 

Fig. 10 Simulated solar cell electrical behavior in the dark dotted traces) and under illumination (solid traces) comparing the effect of the saturation current parameter 7 on Foe- The black traces represent a device with /g x 10 that of the device represented by the red traces. The sharp inflection points in the semilog plots (upper panel) are the points where the current switches from positive to negative. Also illustrated in the linear representation (lower panel) are the short circuit current density, J c, and the maximum output power, Fmax. given by the product of current and voltage. The blue arrows represent the point at which the dark current and the current under illumination are equal in magnitude. The corresponding potential marked in blue on the voltage axis is Foe for the black trace...

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