Two-Kaon Correlations in Central<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>P</mml:mi><mml:mi>b</mml:mi><mml:mo>+</mml:mo><mml:mi>P</mml:mi><mml:mi>b</mml:mi></mml:math>Collisions at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>158</mml:mn><mml:mi mathvariant="italic">A</mml:mi><mml:mi>GeV</mml:mi><mml:mi>/</mml:mi><mml:mi mathvariant="italic">c</mml:mi></mml:math>

Two-particle interferometry of positive kaons is studied in Pb+Pb collisions at mean transverse momenta <p(T)> approximately 0.25 and 0.91 GeV/c. A three-dimensional analysis was applied to the lower p(T) data, while a two-dimensional analysis was used for the higher p(T) data. We find that the source-size parameters are consistent with the m(T) scaling curve observed in pion-correlation measurements in the same collisions, and that the duration time of kaon emission is consistent with zero within the experimental sensitivity.