Velocity distributions of Ba ({sup 1}S{sub 0}, {sup 3}D{sub J}, {sup 1}D{sub 2}, {sup 3}P{sub 1}, and {sup 1}P{sub 1}) and Ba{sup +}({sup 2}P{sub 3/2}) produced by 1064 nm pulsed laser ablation of barium in vacuum
- Centro Laser de Ciencias Moleculares, Facultad de Ciencias Quimicas, Universidad Nacional de Cordoba, 5000 Cordoba (Argentina)
Various electronic states of Ba, from ground state up to 2.24 eV ({sup 1}S{sub 0}, {sup 3}D{sub J}, {sup 1}D{sub 2}, {sup 3}P{sub 1}, and {sup 1}P{sub 1}) together with Ba{sup +}({sup 2}P{sub 3/2}), were produced by 1064 nm high-irradiance pulsed nanosecond laser ablation of Ba in vacuum. The velocity distribution for every species was obtained from time-of-flight measurements, using pulsed laser induced fluorescence or time-resolved optical emission spectroscopy, as applicable to each species. The distributions are bimodal, Maxwell-Boltzmann functions for {sup 1}S{sub 0}, {sup 3}D{sub J}, and {sup 1}D{sub 2} and shifted Maxwell-Boltzmann for the rest of the states, with different peak velocities and average, hyperthermal translational temperatures. Possible mechanisms for the production of these velocity distributions are discussed.
- OSTI ID:
- 20884723
- Journal Information:
- Journal of Applied Physics, Vol. 100, Issue 6; Other Information: DOI: 10.1063/1.2352807; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
Similar Records
Ba(6[ital s]6[ital p] [sup 1][ital P][sub 1,][ital m[ital j]])[r arrow]Ba(6[ital s]6[ital p] [sup 3][ital P][sub 2,][ital m[ital j]][sup [prime]]) Zeeman cross sections in single collisions with N[sub 2], O[sub 2], and H[sub 2]
Temperature dependence of the photodissociation of CO2 from high vibrational levels: 205-230 nm imaging studies of CO(X1Σ+) and O(3P, 1D) products