Measurement of theK−Cascade Time in Liquid Helium

Abstract

The average cascade time of $K^{-}$ mesons has been measured in a helium bubble chamber. In a sample of about 36 000 stopped $K^{-}$, $44\tau$ decays at rest were found, corresponding to a cascade time of (3.2±0.5)×${10}^{-10\mathrm{}}$ sec. This result agrees with a previous measurement.