The extension ofF-X system of Ca1H and Ca2H

Absorption spectra of Ca1 and Ca2H have been observed in a King furnace. Two new bands at 2609 A of Ca1 and 2632 A of Ca2H are measured and analysed as the (1, 0)-band of Ca2H and the (2, l)-band of Ca2H, respectively, of theF2Σ-X2Σ transition. Strong perturbations are found in the-F2Σ-state of Ca2H. Band constants have been evaluated.