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Updated: Jan 25, 2026

Spatial Separation of Molecular Conformers and Clusters
Published on: January 9, 2014
Practical techniques to homogenize the feed gas mixture and enhance the laser-jet interaction time in laser assisted
M B Sai Prasad1, J Padma Nilaya1, Ayan Ghosh1
1Laser and Plasma Technology Division, Bhabha Atomic Research Centre, Mumbai 400085, India.
Abstract:
Laser assisted aerodynamic separation not only suffers from lengthy homogenization time of the feed gas mixture but also dilution of the enriched stream when the duration of the pulsed gas jet stream far exceeds that of the emission of the pulsed laser. We report here practical techniques to overcome the former and alleviate the latter by imposing forced circulation of the feed gas prior to affecting aerodynamic separation and the rim gas during the separation process, respectively. The forced circulation of the feed gas comprising the process gas and the buffer gas resulted in drastic reduction in the time required for their thorough mixing. The recirculation of the rim gas, on the other hand, back to the pulsed nozzle through the feed vessel allowed its increased interaction with the laser beam, thereby reducing the dilution of enrichment to a certain extent.
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