Temperature dependence of the cross section for the fragmentation of thymine via dissociative electron attachment.
J Chem Phys
; 142(17): 174303, 2015 May 07.
Article
en En
| MEDLINE
| ID: mdl-25956096
ABSTRACT
Providing experimental values for absolute Dissociative Electron Attachment (DEA) cross sections for nucleobases at realistic biological conditions is a considerable challenge. In this work, we provide the temperature dependence of the cross section, σ, of the dehydrogenated thymine anion (T - H)(-) produced via DEA. Within the 393-443 K temperature range, it is observed that σ varies by one order of magnitude. By extrapolating to a temperature of 313 K, the relative DEA cross section for the production of the dehydrogenated thymine anion at an incident energy of 1 eV decreases by 2 orders of magnitude and the absolute value reaches approximately 6 × 10(-19) cm(2). These quantitative measurements provide a benchmark for theoretical prediction and also a contribution to a more accurate description of the effects of ionizing radiation on molecular medium.
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1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Temperatura
/
Timina
Idioma:
En
Revista:
J Chem Phys
Año:
2015
Tipo del documento:
Article
País de afiliación:
Polonia