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H2 formation on Mg-rich amorphous silicates

Published online by Cambridge University Press:  12 October 2020

Vito Mennella
Affiliation:
INAF-Osservatorio Astronomico di Capodimonte, Salita Moiariello 16, 80131, Napoli, Italy email: [email protected]
Tushar Suhasaria
Affiliation:
INAF-Osservatorio Astronomico di Capodimonte, Salita Moiariello 16, 80131, Napoli, Italy email: [email protected]
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Abstract

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We present the results of an experimental study on the interaction of D atoms with Mg-rich amorphous silicates. The effects of D irradiation have been analyzed by infrared spectroscopy. The results indicate that HD forms by abstraction of hydrogen atoms chemisorbed in the hydroxyl groups of silicate grains. The formation process occurs for grain and atom temperatures relevant to photodissociation regions.

Type
Contributed Papers
Copyright
© International Astronomical Union 2020

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