The influence of molecular structure on strong field energy coupling and partitioning

Influence of the photoionization process on the fragmentation of laser desorbed polycyclic aromatic hydrocarbons

“…Variation of the wavelength and fluence of the desorption laser for selective desorption of PAH isomers from solid PAH samples has been suggested by Focsa et al [10,11,14,15]. An entirely different approach is the use of very high fluence ionization laser pulses to ionize the desorbed PAH and to use the fragmentation patterns to resolve the isomers present in the desorbed plume [20][21][22]. Perhaps a coupling of the very gentle ionization demonstrated here for the determination of the parent mass peaks and high fluence ionization to fragment those PAHs for the determination of the isomers could be possible.…”

Population control of2s−2ptransitions in hydrogen

“…Then genetic algorithms (GA) may be used to choose a shape for the external potential, V (t). The application of GA with active feedback to the selective breaking and making chemical bonds in polyatomic molecules has been discussed in detail by Rabitz et al [19,20], and tested experimentally [21,22]). As in any optimization scheme, the effectiveness of the GA increases significantly when the initial value of the parameter close to the optimal one is chosen.…”

Non-adiabatic rotational excitation of dipolar molecule under the influence of delayed pulses

“…double-pulse pair 28 and shaped pulses 29,30 are invoked. NAREX shows useful results in internal * For correspondence version, 31,32 dissociative ionization 33,34 molecular rearrangement, 35 fragmentation to neutral products, 36 non-resonant electronic excitation 37 etc. In addition to atom, molecule has nuclear degree of freedom (rotational and vibration) and can undergo internal conversion or dissociation of molecules, the variety of competing outcomes of NAREX must be greatly increased.…”