Measurement of Nuclear Isomeric Half-Lives in the Range from One Microsecond to Ten Milliseconds

Abstract
Relatively simple and accurate delayed‐coincidence apparatus for the measurement of isomeric half‐lives in the millisecond range is described. Practical aspects of the statistics of delayed‐coincidence counting are discussed. Half‐life measurements of Ta181m (17.83±0.10 μsec) and Y88m (300.5±5.0 μsec) are described.