H. Bitto et Rt. Carter, LIFETIMES OF VIBRATIONAL LEVELS IN THE (B)OVER-TILDE(2)A' STATE OF HCO - COMMENT, Chemical physics letters, 261(3), 1996, pp. 385-386
Arguments are put forward that the quantum beats in the (B) over tilde
(2)A' electronic state of HCO attributed to a higher-order hyperfine
perturbation by Tobiason and Rohlfing are most likely due to well-know
n hyperfine quantum beats. In contrast to Tobiason and Rohlfing's inte
rpretation, hyperfine perturbations among bright and dark states are i
rrelevant for understanding such quantum beats.