New Cascade Laser Transitions in Ch2f2 Pumped with the 9r32 Line of a Cw Co2-Laser

New cascade laser transitions of (CH2F2)C-12 at 172.50-mu-m, 208.83-mu-m, 220.44-mu-m, 223.99-mu-m and 250.61-mu-m are reported. A waveguide FIR laser was pumped with a quasi cw (CO2)-C-12-O-16 laser operating on the 9R32 line. Together with the already known lines at 184.3-mu-m, 196.1-mu-m and 235.9-mu-m, the laser lines can be assigned to rotational transitions in the nu-9 vibrational band of (CH2F2)-C-12 and to refill transitions of the vibrational ground state nu-0.