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Scattering, Charge Density Measurements, and Binding Effects

Ineiastic Scattering, Charge Density Measurements, and Binding Effects.—In [Pg.26]

The results for scattering by atoms are conveniently expressed by the electron density function p(r) and the electron-pair correlation function pXr). Using Dirac s 8 function, p may be written as a sum over all the electrons in the atom [Pg.27]

equation (II)], the more usual expression for 7tot(f) may be obtained by adding and subtracting P in equation (53). [Pg.27]

The distribution function Diy) for an atom may thus be determined from electron-diffraction data. This was done for argon by Bartell and Brockway in 1953. Bartell and Gavin i pointed out that the inelastic part of the scattering should be sensitive to electron correlation [cf. equation (56)]. Thus it is possible to obtain the electron-pair correlation function, P r), experimentally in favourable cases. The theory was first applied to two-electron systems later the same authors estimated the effect of electron correlation on the total intensity scattered by beryllium.  [Pg.28]

More recent calculations with wavefunctions which include correlation have been published for neon - and for other light atoms and ions. The results for neon were in satisfactory agreement with experimental results by Fink and Bonham.  [Pg.28]




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Binding effect

Charge effective

Charge measurement

Charge scattering

Charge, effect

Charging effect

Density effect

Density measuring

Effect measure

Scatter Charge

Scattering density

Scattering effects

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