Radiation-induced syntheses in cometary simulated models.
Adv Space Res
; 12(4): 63-6, 1992.
Article
em En
| MEDLINE
| ID: mdl-11538157
ABSTRACT
The behavior of an aqueous-dominant multicomponent cometary model is examined at high doses of ionizing radiation. The system is composed of a water mixture of HCN (0.2 mol dm-3), CH3CN (0.04 mol dm-3), C2H5CN (0.02 mol dm-3), CH3OH (0.12 mol dm-3) and HCO2H (0.01 mol dm-3. It was exposed to gamma rays at doses up to 18.5 MGy. The chemical kinetic database used in the computer treatment of experimental data consists of 79 reactions. A complex mixture of products has been synthesized gases, amino acids, carboxylic acids and polymeric material. The results suggest that the pristine material in cometary nuclei may have been chemically altered by the action of cosmic rays and embedded radionuclides.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Polímeros
/
Ácidos Carboxílicos
/
Meteoroides
/
Raios gama
/
Gases
/
Aminoácidos
Idioma:
En
Ano de publicação:
1992
Tipo de documento:
Article