Isotope selective IR multiphoton dissociation in an efficient laser waveguide reactor

Sarkar, S. K. ; Nayak, A. K. ; Rama Rao, K. V. S. ; Mittal, J. P. (1990) Isotope selective IR multiphoton dissociation in an efficient laser waveguide reactor Journal of Photochemistry and Photobiology A: Chemistry, 54 (2). pp. 159-169. ISSN 1010-6030

Full text not available from this repository.

Official URL:

Related URL:


Isotope selective IR multiphoton dissociation (MPD) was investigated in a simple Pyrex glass waveguide (WG) reactor. Important theoretical and experimental studies were performed concerning the excitation-dependent transmission properties of the WG with a transverse electric atmosphere (TEA) CO2 laser. From these studies, the WG parameters can be selected for efficient MPD. Various important aspects such as laser beam quality excitation of various WG modes, beam coupling in the WG and wall-induced breakdown or reaction, etc. are discussed. The WG reactor was initially operated with well-known systems such as SF6 and CF3Br. The dissociation yield was several times larger than that obtained with a conventional cylindrical reactor, whereas the separation factor remained unchanged. Therefore the WG reactor can be used for isotope selective dissociation and the process parameters can be determined using fewer laser pulses even in a poor absorptive medium. Using this reactor, we report, for the first time T-D separation in CTF3-CDF3 mixtures by exciting at the wings of CTF3 absorption. Optimization of these reactors will eventually lead to a better utilization of laser photons and the reactor may then be integrated into full-scale separation plants.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:25755
Deposited On:04 Dec 2010 11:44
Last Modified:08 Jun 2011 05:27

Repository Staff Only: item control page