V. Parthasarathy et al., LASER ISOTOPE-SEPARATION OF C-13 - A COMPARATIVE-STUDY, Applied physics. B, Photophysics and laser chemistry, 56(5), 1993, pp. 321-325
IR laser chemistry of (CF3Br/Cl2) mixture and neat CF2HCl are examined
in the context of C-13 enrichment. Decomposition extent, enrichment f
actor and energy absorbed are measured for both systems at their respe
ctive optimum conditions. A direct comparison is obtained by keeping e
xtraneous factors such as laser, its pulse duration, cell, irradiation
geometry etc. the same. The halogen scavenged CF3Br MPD requires lowe
r fluence compared to neat CF2HCl irradiation. Overall throughput for
a product with 60-65% C-13 content in a single stage is the same for b
oth systems requiring a similar amount of energy. However, at lower en
richment levels, CF2HCl MPD is better than (CF3Br/Cl2) photolysis in t
erms of both product yield and energy absorption.