Peculiarities of glucose molecules destruction under irradiation at the M-30 microtron (12.5 MeV): mass spectrometric studies
Résumé
The method of mass spectrometric studies was used to study the fragmentation of bioorganic molecule glucose in the gas phase upon collision with low-energy electrons (20-70 eV) before and after irradiation at the M-30 microtron (12.5 MeV) with doses of 14 and 164 kGy. The dose dependence of the transformation of glucose mass spectra was established. The results indicate the dominance in mass spectra of symmetric fission channels of the molecule itself and its fragments formed under the action of M-30 microtron radiation. Studies of the energy dependence of the mass spectra's individual fragment yields indicate the nonequilibrium state of the array of molecular fragments formed after the action of high-energy radiation. The interpretation of the obtained results was carried out within the framework of the method of structural combinations, which allows for analyzing the stability of possible sets of molecular structures formed from glucose after irradiation. The dominant channels of fragmentizing the glucose molecule without considering its radiation treatment are explained. The theoretical method allows one to calculate both the configurational entropy and the information capacity of a bioorganic molecule.
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