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Title: Enhancing the branching ratios in the dissociation channels for O{sup 16}O{sup 16}O{sup 18} molecule by designing optimum laser pulses: A study using stochastic optimization

We propose a strategy of using a stochastic optimization technique, namely, simulated annealing to design optimum laser pulses (both IR and UV) to achieve greater fluxes along the two dissociating channels (O{sup 18} + O{sup 16}O{sup 16} and O{sup 16} + O{sup 16}O{sup 18}) in O{sup 16}O{sup 16}O{sup 18} molecule. We show that the integrated fluxes obtained along the targeted dissociating channel is larger with the optimized pulse than with the unoptimized one. The flux ratios are also more impressive with the optimized pulse than with the unoptimized one. We also look at the evolution contours of the wavefunctions along the two channels with time after the actions of both the IR and UV pulses and compare the profiles for unoptimized (initial) and optimized fields for better understanding the results that we achieve. We also report the pulse parameters obtained as well as the final shapes they take.
Authors:
;  [1] ;  [2] ;  [3] ;  [4] ;  [5]
  1. Department of Chemistry, University of Calcutta, 92 A P C Road, Kolkata 700 009 (India)
  2. Department of Chemistry, Rammohan College, 102/1, Raja Rammohan Sarani, Kolkata 700 009 (India)
  3. Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076 (India)
  4. Department of Chemistry, St. Xavier’s College, 30 Mother Teresa Sarani, Kolkata 700 016 (India)
  5. Department of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032 (India)
Publication Date:
OSTI Identifier:
22489696
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 143; Journal Issue: 14; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; BRANCHING RATIO; COMPARATIVE EVALUATIONS; DESIGN; DISSOCIATION; MOLECULES; OXYGEN 16; OXYGEN 18; PULSES; SIMULATION; STOCHASTIC PROCESSES; WAVE FUNCTIONS