Chemiluminescence and photoluminescence of CuF

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Abstract
Photon yields, chemiluminescence, and excitation spectra of gas phase reactions of atomic copper with F2, NF3, and SF6 have been obtained between 400 and 1000 nm. Distributions of excited state populations of the products of these reactions and vibrational constants of four previously unreported bands of CuF were measured. A pulsed tunable dye laser was used for excitation of CuF produced in chemical reactions or by thermal dissociation of CuF2. Analysis of rotationally resolved excitation spectra gives a new value of B o =0.3692cm−1 for the B 1Σ state of CuF. Radiative lifetimes of 7.3 μsec for the A state, 1.2 μsec for the B state, and 0.6 μsec for the C state have been measured through an exponential fit to decays of photoluminescence following laser pulses. Additionally a lifetime of 0.2 to 2 msec for the upper state of the red system has been estimated from relative intensity measurements of the four states observed in chemiluminescence.