The lowest rotational transition of several isotopic forms of KrD+

摘要

TheJ=0ndash;1 absorption line of KrD+has been observed for all six stable krypton isotopes in a dc glow discharge in Krndash;D2mixtures. For83KrD+the quadrupole coupling constant lsqb;eQq=549.1(5) MHzrsqb; and nuclear magnetic coupling constant lsqb;CN=minus;0.022(2) MHzrsqb; were determined. By combining the new microwave data for KrD+with very precise published Dunham constants for KrH+from Johnsrsquo; high resolution infrared spectral data, the mass independent Dunham parametersU01, Dgr;H01, and Dgr;Kr01were deduced. Precise Doppler shift measurements indicated a small drift velocity in the magnetic field enhanced, abnormal discharge in the direction opposite to that naively expected from the electrode polarity.