caa a22 4500 465729789 CHVBK 20180323111738.0 cr unu---uuuuu 170327e19901001xx s 000 0 eng 10.1007/BF02165221 doi (NATIONALLICENCE)springer-10.1007/BF02165221 Transient optical absorption spectra in pulse irradiated solid amino acids [Elektronische Daten] [Z. Zagórski, Z. Tomasiński] A preliminary pulse radiolytic study is reported on transient optical absorption spectra in solid amino acids. Spectra have been obtained by improved Cherenkov Light Self-absorption Method applied during 5.5 μs pulses of 10 or 13 MeV linac electrons. Amino acids exhibit a very different type of behaviour: from lack of absorption signal (at the present sensitivity of the system) to strong absorptions in the visible part of the spectrum and the near UV. The absorption may be due to the electron trapped in lattice imperfections or to the formed free radical. Comparison of spectra in a variety of preparations (hydrochlorides, salts of amino acids and sets of related compounds) suggests a free radical origin of spectra. All transient absorption disappear within a fraction of a second. Free radicals turn by deamination and/or decarboxylation into more stable species detected by ESR. Akadémiai Kiadó, 1990 Zagórski Z. Department of Radiation Chemistry and Technology, Institute of Nuclear Chemistry and Technology, 03-195, Warsaw, Poland aut Tomasiński Z. Department of Radiation Chemistry and Technology, Institute of Nuclear Chemistry and Technology, 03-195, Warsaw, Poland aut Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 146/3(1990-10-01), 197-204 0236-5731 146:3<197 1990 146 10967 https://doi.org/10.1007/BF02165221 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02165221 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zagórski Z. Department of Radiation Chemistry and Technology, Institute of Nuclear Chemistry and Technology, 03-195, Warsaw, Poland aut NATIONALLICENCE 700 1- Tomasiński Z. Department of Radiation Chemistry and Technology, Institute of Nuclear Chemistry and Technology, 03-195, Warsaw, Poland aut NATIONALLICENCE 773 0- Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 146/3(1990-10-01), 197-204 0236-5731 146:3<197 1990 146 10967 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer