Quadrupole tensor frequency component

The quadrupole splitting depends upon the relative orientation of a principal axis system (PAS, unit vectors x, y and z) fixed in the C-D bond and the magnetic field vector, Bq. The values Qyy, Q z are quadrupole tensor frequency components H- Qyy H- Q z = 0) associated with each principal axis and they are the quadrupole splittings, Av, which result when is aligned... 

In the response function terminology [47] the i, j component of the frequency-dependent dipole polarizability tensor — w) (or the ij, kl component of the traceless quadrupole polarizability tensor is defined through... 

The feasibility of ENDOR-like experiments in zf using optieal detection was suggested by Schmidt and van der Waals (1969). The observation of spectra of this type was reported nearly simultaneously by Harris et al (1969) and Chan et al (1969). The focus in these studies was on the nuclear spin sublevels of phosphorescent quinoxalines. The mechanisms responsible for the intensity of the ENDOR transitions in zf have been discussed (Harris and Buckley, 1976). The technique was extended to both chlorine isotopes by Buckley and Harris (1970). Chan and van der Waals (1973) used the ENDOR technique to determine the N quadrupole frequencies in perdeuteroquinoline. The analysis given rests on the assumption of the coincidence of principal axes, information not normally available from the zf experiment. C and H ENDOR transitions were observed in the low-field experiments of Hochstrasser et al (1973,1978) on (nn ) benzophenone. It has also been shown that certain components of the proton hyperfine tensors can be obtained from a careful analysis of the zf ENDOR spectra of azanaphthalenes (Dennis and Tinti, 1975). Chan and Walton (1977) have observed proton ENDOR signals in zf. More recently, Dinse and Winscom... 

Components of the nuclear quadrupole coupling tensor in the inertial-axes system, in units of frequency (MHz, kHz), see eqs. (2.15, 2.16)... 

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