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On the formation and processing of carbon and nitrogen compounds in carbonaceous chondrites

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Title: On the formation and processing of carbon and nitrogen compounds in carbonaceous chondrites
Authors: Yamamoto, Tetsuo Browse this author
Kozasa, Takashi Browse this author
Issue Date: Oct-1990
Publisher: National Institute of Polar Research
Citation: Editor in Chief, Keizo Yanai, with Hideyasu Kojima, Akira Shimoyama, Yoshio Yoshida, Ikuo Kushiro, and Nobuo Takaoka.
Journal Title: Proceedings of the NIPR Symposium on Antarctic Meteorites
Volume: 3
Start Page: 220
End Page: 229
Abstract: On the basis of chemical kinetic consideration, we examine processing of carbon and nitrogen compounds that leads to the linear relation between the logarithmic contents of C and N in carbonaceous chondrites: log N=a log C-b, found by A. Shimoyama et al. (Chem. Lett., 10, 2013, 1987), where a>1 and b are constants. It is shown that the linear relation results from dissociation of organic polymer in the grains before accretion to parent body-sized objects by radiation that penetrates through the grains such as cosmic ray. Condensation of volatile molecules composed of C and N is also examined as a possible process to form precursors of organic compounds in carbonaceous chondrites. From an analysis of a model thermodynamic system, it is conjectured that this process can also realize the linear relation under certain conditions.
Description: Fourteenth Symposium on Antarctic Meteorites. 6-8 June 1989. National Institute of Polar Research, Tokyo, Japan.
Conference Name: Symposium on Antarctic Meteorites
Conference Sequence: 14
Conference Place: Tokyo
Rights: 国立極地研究所
Type: proceedings
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 小笹 隆司

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