Abstract
GeH3 radicals were observed by resonance enhanced multiphoton ionization (REMPI) spectroscopy in the region of 370 − 430 nm. The spectrum arises from two‐photon resonances with the 5p 2A″2 (D3h) Rydberg state which has its origin at 419.1 nm (ν0 ‐ 0 = 47,705 cm−1). Absorption of a third photon ionized the radicals. A vibrational progression of ∼756 cm−1 was assigned to the “umbrella” mode, ν′2. The observed X 2A1 (C3v) v″2=2 to v″2=0 vibrational interval is 663 cm−1.
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