Zeeman splitting constant

Quadrupole coupling, isomer shift Quadrupole tensor, nuclear Zeeman splitting, g values, coupling constants, relaxation times... 

A relationship of the form TiT(hv)2 = C where C is a constant for a specific host and hv is the Zeeman splitting has been established to give estimates of to about a factor of two. Typical values at 10 mK lie in the range 1s-1000s. 

In order to use the Zeeman effect for background correction [306] several approaches can be applied (Fig. 87) [307]. A magnetic field around the primary source or around the atom reservoir can be provided, by which either the atomic emission lines or the absorption lines are subjected to Zeeman splitting. Use can be made of a constant transverse field and the absorption for the it- and the -components measured alternately with the aid of a polarizer and a rotating analyzer. However, an ac longitudinal field can be used and with the aid of a static polarizer only the cr-components are measured, once at zero and once at maximum field strength. 

Consider the rotational Zeeman effect of ethyleneoxide as an example for an asymmetric top molecule. The first investigation of the rotational Zeeman effect of ethyleneoxide has been carried out by the authors and W. Hiittner in 1968. In the meantime, the Zeeman splittings were remeasured with improved accuracy in an attempt to determine the sign of the electric dipole moment from the change of the g-values and rotational constants upon isotopic substitution (compare Chapter II). All numerical values will be taken from this later work 9). 

Nuclear shielding reflects changes to the nuclear Zeeman splitting by an external magnetic field and is phenomenologically defined by eq. 1, where the effective magnetic field at the position of the nucleus in question is modified relative to the external field B by the shielding constant (tensor) a. 

In an applied magnetic field Bo 0, the triplet states have in addition a Zeeman energy. The Zeeman splitting then consists of three non-equidistant terms. For technical reasons, the ESR spectrum is usually measured at a constant microwave frequency, e.g. 9.4 GHz (X band) or 35 GHz (Q band). It exhibits a fine-stracture splitting between the resonance fields of the Amj = 1 transitions which is also termed the fine stmcture (Fig. 7.1) this is a direct result of the zero-field splitting. 

Magnetic field dependence of elastic constants In a magnetic field one obtains Zeeman-split CEF levels with new eigenstates of the total Hamiltonian,... 

---