Laboratory submillimeter transition frequencies of Li-7H and Li-6H

The fundamental (J = 1<-0) rotational transition frequencies of ⁷LiH and ⁶LiH in their ground (υ = 0) vibrational states and of ⁷LiH in its first excited (υ = 1) vibrational state have been measured in the laboratory. Use of these transition frequencies should permit astronomical investigations of LiH abundances in red giant stars of high lithium abundance.