Refined Results of Measurements of the Lifetime of Unstable Ions and HD–.

The results of measuring the lifetime of negative molecular ions and HD─ were refined by repeated processing: the lifetime of the ion is 3.9 ± 0.1 µs and that of the HD─ ion is 4.6 ± 0.1 µs. The values of the beam energy at which the measurements were carried out were refined. It is shown that the measurement results are divided into two groups in which the lifetimes of the and HD─ ions are equal with good accuracy. [ABSTRACT FROM AUTHOR]