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A two state model study of photo‐detachment dynamics driven by an optimally designed polychromatic field: A simulated annealing based optimisation
Author(s) -
Talukder Srijeeta,
Seal Dipayan,
Naskar Pulak,
Chaudhury Pinaki,
Ghosh Subhasree
Publication year - 2021
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/qua.26676
Subject(s) - diatomic molecule , dissociation (chemistry) , simulated annealing , morse potential , atomic physics , ground state , annealing (glass) , impossibility , electron , physics , chemistry , molecular physics , molecule , quantum mechanics , algorithm , mathematics , thermodynamics , law , political science
Abstract The surfaces of F 2 −and F 2 are two well separated surfaces modeled by two Morse potentials. In presence of a field, these two surfaces couple and transition from F 2 −to F 2 takes place resulting in the detachment of an electron. We have applied Simulated Annealing (SA) technique to design the polychromatic field which results in ∼ 95% probability of photo detachment (P d ). Also we have designed a field to achieve photo detachment followed by dissociation of FF bond with nearly 38% dissociation probability. F 2 being a homo nuclear diatomic molecule, promotion to the continuum states by directly exciting it from its ground vibrational state is an impossibility and our method appears to be a feasible solution if the target is to break the FF bond.