Scattering of ultrashort laser pulses on some polymers and plasmids

The paper shows a method for the theoretical calculation of the spectrum of interaction between an ultrashort laser pulse and complex polyatomic objects. The calculation is shown on some plasmids DNA. The special feature of the calculation is the speed of processing the results. The method allows you to consider the scattering on all the atoms included in the molecules, while the calculation is performed quickly enough, due to the use of symmetries in the structure of the object in question. The method is suitable only for molecules with repeating regions in their structure, such as some plasmids and polymers, including DNA molecules with repeating nitrogenous bases. The calculation is based on the Hartree-Fock-Slater method. Before mathematical modeling, the molecule is built in the Avogadro program. The coordinates of the constructed model are used for the calculation. To date, the processing of experimental data obtained during operation of ultrashort pulses is difficult. The proposed method can help in deciphering the experimental data and reduce the processing time of the results.