Organic synthesis in experimental impact shocks.
Science
; 276(5311): 390-2, 1997 Apr 18.
Article
em En
| MEDLINE
| ID: mdl-9103191
ABSTRACT
Laboratory simulations of shocks created with a high-energy laser demonstrate that the efficacy of organic production depends on the molecular, not just the elemental composition of the shocked gas. In a methane-rich mixture that simulates a low-temperature equilibrium mixture of cometary material, hydrogen cyanide and acetylene were produced with yields of 5 x 10(17) molecules per joule. Repeated shocking of the methane-rich mixture produced amine groups, suggesting the possible synthesis of amino acids. No organic molecules were produced in a carbon dioxide-rich mixture, which is at odds with thermodynamic equilibrium approaches to shock chemistry and has implications for the modeling of shock-produced organic molecules on early Earth.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Acetileno
/
Cianeto de Hidrogênio
/
Meteoroides
/
Evolução Química
/
Aminas
/
Metano
Idioma:
En
Ano de publicação:
1997
Tipo de documento:
Article