Field internal

An important factor is that the magnitude of the internal field (H is less than the appHed field by the amount of the Consequently the... 

The internal field is that microwave field which is generally the object for solution when MaxweU s equations are appUed to an object of arbitrary geometry and placed in a certain electromagnetic environment. The is to be distinguished from the local field seen by a single molecule which is not necessarily the same (22). The dielectric permittivity as a function of frequency can be described by theoretical models (23) and measured by weU-developed techniques for uniform (homogeneous) materials (24). 

The general engineering task in most apphcations of microwave power to materials or chemicals is to deduce from the geometry of samples and the electromagnetic (EM) environment (appUcator), the internal field distribution, E (r), and hence the distribution, P(r), of absorbed power. From this, the... 

Maximum power transfer to electrons for a given internal field occurs when = u). The plasma frequency, CO, is the frequency at which e = 0 ... 

It was pointed out by Cunningham et al.4) that it is strictly necessary to take into account the internal field correction, and define quantities cps instead of A, where... 

Powder spectra of paramagnetic compounds measured with applied fields are generally more complicated than those shown in Fig. 4.14. Large internal fields at the Mossbauer nucleus that are temperature- and field-dependent give rise to this complication. If, however, the measurement is performed at sufficiently high temperature, which is above ca. 150 K, the internal magnetic fields usually collapse due to fast relaxation of the electronic spin system (vide infra, Chap. 6). Under... 

Because of the different properties of the nuclear ground and excited states, the hyperfine coupling constants (A-values) for Mossbauer nuclei are often quoted in units of the internal field, where /I represents an energy and is the... 

The value is derived from a zero-field spectrum recorded at 150 K. A q could not be determined at 4.2 K because the compound is in the limit of slow paramagnetic relaxation and the strong unquenched orbital moment forces the internal field into the direction of an easy axis of magnetization. As a consequence, the quadrupole shift observed in the magnetically split spectra results only from the component of the EFG along the internal field and the orientation of the EFG is not readily known dbabh is a bulky N-coordinating amide... 

Conversion of magnetic hyperfine coupling constants A into internal fields for Fe When the nuclear spin is decoupled from the electronic spin by application of an external field, the hyperfine coupling, according to (4.76), is defined as... 

The electrostatic field I is now the sum of the external field and an internal field... 

This general technique is termed decay due to diffusion in the internal field , or DDIF [42, 43]. 

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