Analysis of proton irradiation products in simulated intersteller dusts by mass spectrometry

It is known that various kinds of organic compounds exist in space. In order to study the possibility of the formation of organic compounds in comets or their precursory bodies (intersteller dust grains), ice mixtures of carbon monoxide (or methane), ammonia and water made in a cryostat at 10 K (&qu...

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Bibliographic Details
Published inBUNSEKI KAGAKU Vol. 45; no. 6; pp. 569 - 574
Main Authors KASAMATSU, Takashi, TSUCHIYA, Masahiko, KOBAYASHI, Kensei, KANEKO, Takeo
Format Journal Article
LanguageEnglish
Japanese
Published Tokyo The Japan Society for Analytical Chemistry 1996
Japan Science and Technology Agency
Subjects
comets
interstellar dust grains
MS
origins of life
proton irradiation
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ISSN0525-1931
DOI10.2116/bunsekikagaku.45.569

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Summary:It is known that various kinds of organic compounds exist in space. In order to study the possibility of the formation of organic compounds in comets or their precursory bodies (intersteller dust grains), ice mixtures of carbon monoxide (or methane), ammonia and water made in a cryostat at 10 K ("simulated cometary ices") were irradiated with high energy protons. Irradiated ice products were warmed up to room temperature, while sublimed gases were analyzed with a quadrupole mass spectrometer. Some hydrocarbons and alcohols were detected. "Amino acid precursors" (compounds yielding amino acids after hydrolysis) were detected in non-volatile products remaining on the substrate at room temperature. These results suggest the possible formation of organic compounds in interstellar dust grains by cosmic radiation.
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ISSN:0525-1931
DOI:10.2116/bunsekikagaku.45.569