About formation of positive and negative ions of adenine molecules caused by slow electrons
DOI:
https://doi.org/10.24144/2415-8038.2009.25.195-201Abstract
The absolute cross sections for negative and positive ions formations of the nucleic acid base - adenine were found using the crossed electron and atomic beam technique. Energy dependences and absolute values of the total cross sections of formation of positive and negative ions of adenine were obtained. The maximum value of the ionization cross sections for the production of positive ions at the 85eV energy reaches (2,8±0,6)∙10-15 cm2. The maximum value of the negative ion formation cross section reaches (6,0±1,2)∙10-18 cm2 at (1,1±0,15) eV energy. Mass spectra of adenine molecules were measured and also the partial cross sections of dissociative ionization were found.References
Feil S., Gluch K., Matt-Leuber S., Scheier P, Limtrakul J., Probst M., Deutsh H., Becker K., Stamatovic A. and Mark T.D. Partial cross sections positive and negative ion formation following electron impact on uracil // J. Phys. B. 2004, v. 37. – P. 3013–3020.
Abouaf R., Pommier J., Dunet H. Nega-tive ions in thymine and 5-bromouracil produced by low energy electrons // International Journal of Mass Spectrometry, 2003. - 226. - P. 397-403.
Aflatooni K. Total dissociative electron attachment cross sections for molecular constituents of DNA / K. Aflatooni, A.M. Scheer, P.D Burrow // J. Chem. Phys. - 2006. - V. 125. - P. 054301-1 – 054501-5.
Cobut V., Frongillo Y., Patau J.P. et al. Monte Carlo simulation of fast electron and proton tracks in liquid water // I. physical and physicochemical aspects. Radiat. Phys. Chem., 1998. – Vol. 51. – P. 229-243.
Шафраньош И.И., Суховия М.И., Шафраньош М.И., Шимон Л.Л. Процессы образования положительных и отрицательных ионов молекул тимина, инициируемые медленными электронами // ЖТФ. – 2008. – Т.78. Вып.12. – С. 7-11.
Шафраньош М.І., Суховія М.І., Шимон Л.Л., Шафраньош І.І., Резонансне утворення негативних іонів молекул урацилу // Науковий вісник Ужгородського університету. Серія Фізика. – 2008. - Вип.23. - С. 85-90.
Шафраньош М.И., Суховия М.И., Шимон Л.Л., Шафраньош И.И. Абсолютное сечение образования отрицательных ионов молекул цито-зина электронным ударом // Письма в ЖТФ, 2005. – т. 31. вып.24., С. 74-77.
Shafranyosh I.I., Sukhoviya M.I., Shafranyosh M.I. Absolute cross sections of positive and negative ion production in electron collision with cytosine molecules // J.Phys.B., 2006. – V.39. – Р. 4155- 4162.
Шафрраньош И.И., Суховия М.И. Возбуждение молекул тимина в газовой фазе электронным ударом // Опт. и Спектр. – 2007. - Т. 102. - №4. - C. 553-555.
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