Biomedical subjects
Publications and source records attributed to P W Hawkes.
The asymptotic chromatic aberration coefficients of electron lenses may be written as polynomials in reciprocal magnification. Expressions for the polynomial coefficients of a doublet are derived in terms of those of the individual members of the doublet.
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Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
The calculation of aberration coefficients, and even the derivation of paraxial equations, can involve an immense volume of elementary algebraic manipulation; the use of a computer to lighten this task for some unconventional electron lens types is described.
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