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Sievert integral
The Sievert integral, named after Swedish medical physicist Rolf Sievert, is a special function commonly encountered in radiation transport calculations.
Definition
\( F(x,\theta)=\int_0^\theta {e^{-x\sec(\varphi)}}\,d{\varphi}.\, \)
References
Abramowitz, Milton; Stegun, Irene A., eds. (1965), "Chapter 27", Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables, New York: Dover, p. 1001, ISBN 978-0486612720, MR 0167642.
External links
Weisstein, Eric W., "Sievert Integral", MathWorld.
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