Magnetic depolarization,

H. Figger, D.L. Monts, R.N. Zare Anomalous magnetic depolarization of fluorescence from the NO2 Bo-state. J. Mol. Spectrosc. 68y 388 (1977) J.R. Bonilla, W. Demtrbder Level crossing spectroscopy of NO2 using Doppler reduced laser excitation in molecular beams. Chem. Phys. Lett. 53, 223 (1978)... 

IS. 2. Magnetics depolarization of resonance radiation - the Hanle effect... 

Even when they have a partial crystallinity, conducting polymers swell and shrink, changing their volume in a reverse way during redox processes a relaxation of the polymeric structure has to occur, decreasing the crystallinity to zero percent after a new cycle. In the literature, different relaxation theories (Table 7) have been developed that include structural aspects at the molecular level magnetic or mechanical properties of the constituent materials at the macroscopic level or the depolarization currents of the materials. 

Accurate experimental determinations require that not only the handedness of the produced light, but its exact degree of polarization, are known. The theoretical performance of an undulator may be in practice be degraded by magnetic defects, and the optical beam can be further depolarized by reflections along the beamline. Again, the dephasing on optical elements can in principle be... 

Lipari G. and Szabo A. (1980) Effect of Vibrational Motion on Fluorescence Depolarization and Nuclear Magnetic Resonance Relaxation in Macromolecules and Membranes, Biophys. J. 30, 489—506. Steiner R. F. (1991) Fluorescence Anisotropy Theory and Applications, in Lakowicz J. R. (Ed.), Topics in Fluorescence Spectroscopy, Vol. 2, Principles, Plenum Press, New York, pp. 127-176. 

Lipari G. and Szabo A. (1980) Effect of Vibrational Motion on Fluorescence Depolarization and Nuclear Magnetic Resonance Relaxation in Macromolecules and Membranes, Biophys. J. 30, 489-506. 

With TMS, a brief but powerful electric current is passed through a small coil held against the scalp of a conscious patient. This generates a powerful local magnetic field which passes unimpeded through the skull and induces a weaker, less focused electric current within the brain. Due to the non-invasive nature of this method, the important physiological effects of TMS are likely to be a consequence of the density of the electric current and the electric field which is induced in the cortex. It is believed that the induced electrical fields cause neuronal depolarization which changes the neurotransmitter release mechanisms. 

A new method has been developed for stimulation of the brain trans-cranial magnetic stimulation [TMS]. Magnetic stimulation of the brain may offer a means to examine the importance of the convulsion for ECT effects. TMS is a novel noninvasive method for the stimulation of neurons (for review, see Barker 1991]. High electrical current flow in a spiral of wire induces a magnetic field. The magnetic field produces an electric field that initiates ion flow and consequent membrane depolarization directly in brain tissues. Therefore, magnetic stimulation of deep structures may be achieved with relatively little induced current in the skin or skull and without convulsions [Barker 1991]. 

Another complication is the demagnetization correction due to the geometry of the specimen. Demagnetization (or the equivalent depolarization problem for dielectric bodies in an electric field) can only be solved analytically for an ellipsoid of revolution (27X28). When He is applied parallel to one of the three axes of revolution, the magnetization is parallel to He, but the internal field H is given by (29) ... 

Single-bilayer DODAC (6) vesicles Magnetite particles prepared in situ in vesicles from Fe2+/Fe3+ and OH" Static and dynamic polarized and depolarized light scattering and static and time-resolved dichroic anisotropy, as well as conventional magnetization vs applied magnetic field determinations were used for characterization 794... 

Procedure that involves rapidly passing an electric current through a coil thereby creating a powerful, localized and transient magnetic field. This field depolarizes superficial cortical neurons. 

Schuler OG, Eriskat J, Baethmann AJ, Back T (2001a) Thrombolysis induces a reperfusion-dependent inhibition of peri-infarct depolarizations in experimental thromboembolic stroke. J Cereb Blood Flow Metab 21 S396 Schuler OG, Plesnila N, Otto D, Baethmann AJ, Back T (2001b) Early thrombolysis inhibits periinfarct depolarizations in embolic MCA occlusion. NeuroReport 12 3943-3946 Schwindt W, Burke M, Pillekamp F, Luhmann HJ, Hoehn M (2004) Functional magnetic resonance imaging and somatosensory evoked potentials in rats with a neonatally induced freeze lesion of the somatosensory cortex. J Cereb Blood FlowMetab 24 1409-1418... 

The /i+ moderation processes involve dominantly electro static interaction and there is no muon depolarization in strong axial magnetic fields (B 0.16 T) [10]. At low fields the tof = 0 atomic states are populated to 50 % which means a corresponding reduction of the polarization due to the muon spin oscillation at the hyperfine frequency Avhfs-... 

---