Magnetic screening

Fig. 54. Disintegrator for dyes (A) feed hopper (B) oscillating feed with magnetic screening device (C) disintegrator (D) motor (E) dust pipe (F) dust chamber (G) filter bags.

In order to characterize the quantity of magnetic screening characteristic of a concrete nucleus, use is made of the value of the chemical shift, i.e., the difference between the constant screening of a standard substance (Oi) and the screening of the substance studied (a). The chemical shift (5) is measured in millionth parts of the magnetic held strength of a NMR spectrometer ... 

Figure 2 (2a) Magnetic screening constant a [e2/3/xaQC2], (2b) polarizability in Kirkwood s approximation a [10-24 cm], (2d) hyperfine splitting constant A [ml] and (2c) pressure [atm] (for the Is ground state) as a function of the confining radius r0 (au).

MO calculations predicted the magnetic screening of ip to decrease with increasing distortion of the ideal PHJ tetrahedron [23]. 

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