Abstract
The relative cross section of processes attendant on the capture of an electron by 12-keV 3He2+ ions are measured by time-of-flight mass spectrometry for leucine (C6H13NO2), methionine (C5H11NO2S), and glutmic acid (C5H9NO4) molecules. No differences between the formation relative cross sections of different fragment ions for the D- and L-enantiomeric forms of the amino acids are revealed. The spectrum of glutamic acid fragments taken at temperatures above 110°C is explained by decomposition of the acid with the formation of pyroglutamic acid (C5H7NO3) and water. The results are compared with published data on fragmentation of the same molecules via electron-impact ionization.
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Original Russian Text © O.V. Smirnov, A.A. Basalaev, V.M. Boitsov, S.Yu. Vyaz’min, A.L. Orbeli, M.V. Dubina, 2014, published in Zhurnal Tekhnicheskoi Fiziki, 2014, Vol. 84, No. 11, pp. 121–127.
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Smirnov, O.V., Basalaev, A.A., Boitsov, V.M. et al. Fragmentation of D- and L-enantiomers of amino acids through interaction with 3He2+ ions. Tech. Phys. 59, 1698–1704 (2014). https://doi.org/10.1134/S1063784214110231
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DOI: https://doi.org/10.1134/S1063784214110231