@article{oai:nipr.repo.nii.ac.jp:00004519,
 author = {Yamamoto,Tetsuo and Kozasa,Takashi},
 journal = {Proceedings of the NIPR Symposium on Antarctic Meteorites},
 month = {Oct},
 note = {P(論文), 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.},
 pages = {220--229},
 title = {On the formation and processing of carbon and nitrogen compounds in carbonaceous chondrites},
 volume = {3},
 year = {1990}
}