Abstract
Expressions are derived which will approximate the radiation fields from slots in large circular cylinders. This derivation is accomplished by applying a Watson transformation to the slowly convergent harmonic series representation and then evaluating the resulting integral to third order with the techniques of Van der Pol and Bremmer. Highly convergent representations are obtained which are valid in different azimuthal sectors around cylinders wherekais in the range of 10 to 1000 or more.

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