Ohio State Navbar

Laser induced fluorescence study of the B2B2→X2A2 transition of the furan cation in a supersonic free jet expansion

Title: 

Laser induced fluorescence study of the B2B2→X2A2 transition of the furan cation in a supersonic free jet expansion

Authors: 
L. F. DiMauro, J. Frye and T. Sears
Abstract: 

The first experimental observation of laser induced fluorescence from the furan cation, C4H4O+, is reported. The ion is formed in a supersonic free jet via a two photon ionization involving the 193 nm output of an ArF excimer laser. The B→X electronic transition is probed and vibrational assignments are presented for both states. Comparisons to the infrared, Raman, multiphoton ionization, and photoelectron spectrum of the parent molecule are made. The term value T00 for the B→X electronic transition is located at 24 675 cm−1, which differs drastically with previously reported values from both experimental and theoretical investigations. These differences are discussed and probable explanations proposed. The lifetime of the vibrationless level of the B state is measured to be 330 ns.

Year: 
1987
Journal: 
J. Chem. Phys. 87, 4435-4446