Isotopically selective dissociation of small molecules exposed to pulsed CO₂laser radiation

Effect of NO on the Isotopically Selective Dissociation of CF3Br with a Transversely Excited Atmospheric CO2 Laser

“…The multiple photon dissociation (MPD) of polyatomic molecules has been studied by several authors. − We have studied the MPD of pure CF 3 Br and mixtures with monatomic (He, Ar, and Xe), diatomic (H 2 , D 2 , and N 2 ), and polyatomic (CF 4 ) gases. , The experiments were carried out by irradiating with a transversely excited atmospheric (TEA) CO 2 laser, at different temperatures, pressures, and fluences. Mixtures of CF 3 Br with different gases − have also been studied by MPD, following the effect of the presence of these gases on the carbon-13 enrichment. They observed that the enrichment factor tends toward 1 as the total pressure increases, when irradiating with laser lines between 1035 and 1050 cm -1 , as we do.…”

“…10,11 The experiments were carried out by irradiating with a transversely excited atmospheric (TEA) CO 2 laser, at different temperatures, pressures, and fluences. Mixtures of CF 3 -Br with different gases [12][13][14][15][16] have also been studied by MPD, following the effect of the presence of these gases on the carbon-13 enrichment. They observed that the enrichment factor tends toward 1 as the total pressure increases, when irradiating with laser lines between 1035 and 1050 cm -1 , as we do.…”

Carbon Isotope Selective Separation From MPD of CF3Br With a TEA CO2 Laser

“…The process of isotopic selective multiphoton dissociation (MPD) of polyatomic molecules in the gas phase has been amply studied by several authors [1][2][3][4][5][6][7][8][9]. Pure CF3Br and mixtures with different gases have been also studied by MPD [10][11][12][13][14][15]. These studies reveal that the wavelength is the most relevant parameter to attain selectivity.…”