title: Enhancing the branching ratios in the dissociation channels for O(16)O(16)O(18) molecule by designing optimum laser pulses: A study using stochastic optimization.
abstract: 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(18) + O(16)O(16) and O(16) + O(16)O(18)) in O(16)O(16)O(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.affiliation: Department of Chemistry, University of Calcutta, 92 A P C Road, Kolkata 700 009, India.
authors.forename: Srijeeta
authors.initials: S
authors.lastname: Talukder
authors.affiliation: Department of Chemistry, Rammohan College, 102/1, Raja Rammohan Sarani, Kolkata 700 009, India.
authors.forename: Shrabani
authors.initials: S
authors.lastname: Sen
authors.affiliation: Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India.
authors.forename: Bhavesh K
authors.initials: BK
authors.lastname: Shandilya
authors.affiliation: Department of Chemistry, St. Xavier's College, 30 Mother Teresa Sarani, Kolkata 700 016, India.
authors.forename: Rahul
authors.initials: R
authors.lastname: Sharma
authors.affiliation: Department of Chemistry, University of Calcutta, 92 A P C Road, Kolkata 700 009, India.
authors.forename: Pinaki
authors.initials: P
authors.lastname: Chaudhury
authors.affiliation: Department of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India.
authors.forename: Satrajit
authors.initials: S
authors.lastname: Adhikari