Isotopic enrichment of SF6 in S34 by multiple absorption of CO2 laser radiation

Abstract

An increase in the ratio of S34/S32 of 3300% over its natural ratio has been obtained by irradiating SF6 in the presence of H2 with an intensely focused CO2 laser. The quantities of material separated are on the order of 100 μg.

Stereomutation dynamics in hydrogen peroxide

“…Particularly after the discovery [7][8][9] and theoretical description [10][11][12][13] of isotope selective coherent infrared multiphoton excitation and laser chemistry of polyatomic molecules and subsequently also the advent of ''Femtosecond Chemistry'' [14,15] there has been much interest in what has been called in a variety of contexts either ''mode selective chemistry'' [16,17] or reaction control [18][19][20][21] including chiral molecules [22,23]. This question has been addressed from a variety of points of view, and Jö rn Manz and his group have been early players in the field, including both bimolecular and unimolecular reactions [24][25][26].…”

Collisionless Dissociation of Polyatomic Molecules by Multiphoton Infrared Absorption

“…Foru$ff(n)tp>> 1 where Vn is~ivcn by IIq. (2) and OJR and V = v the system cssuntiall.y oscillates between the ground state n' and the state IV3 = n > . The time-averaged probability to be in this stntc is plotted as a function of frequency for n = 1,2,3,4 in Figure 1.…”

The Synthesis of [2-2H1]Thiirane-1-oxide and [2,2-2H2]Thiirane-1-oxide and the Diastereoselective Infrared Laser Chemistry of [2-2H1]Thiirane-1-oxide

“…For the diastereomeric pair, we have been able to provide the first selective, laser chemical dissociation and resulting enrichment. While isotope enrichment of ordinary isotopomers by infrared laser chemistry has now been known for two decades, [13,14] the process of isotopomeric diastereomer selection has not been established before, to our knowledge. Further re- Figure 1.…”