The vibrational distribution of HgBr (X 2Σ) molecules formed by photodissociation of HgBr2 at 193 nma)

Abstract

Laser‐induced fluorescence excited from the HgBr (B ²Σ–X ²Σ) bands has been used to determine the vibrational distribution of HgBr (X ²Σ) photofragments of the photodissociation of HgBr₂ at 193 nm. The fraction of HgBr molecules initially formed in the B ²Σ state was determined to be 60⁺¹⁵₋₁₀%. The remaining 40⁺¹⁰₋₁₅% of molecules directly formed in the HgBr (X ²Σ) ground electronic state constitutes an important channel for photodissociation at 193 nm.