화학공학소재연구정보센터
Journal of Physical Chemistry, Vol.100, No.10, 4188-4192, 1996
Fragmentation and Recombination of Molecules During Laser Vaporization of Cryogenic Films
Laser vaporization of cryogenically condensed films of IC1 and Cl-2 is studied by investigating the beams of neutral atoms and molecules formed with high translational kinetic energies. The fragments resulting from the vaporization process of these molecules are examined and compared to the fragmentation patterns of molecules studied previously, XeF2 and NO. It is found that IC1 shows a large amount of fragmentation and recombination during vaporization, which forms Cl-2 and I-2. This is also true for XeF2 and may be true for Cb but does not occur for NO. The degree of recombination is affected by the thickness of the cryogenic film being ablated and depends on the bond energy of the molecule with respect to the photon energy.