The origin of the main component of noble gases in meteorite and its cosmogenic/ geochemical implications

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The purpose of this study is to identify the noble gas carrier Q in meteorite through noble gas analyses, Raman spectroscopy and transmission electron microscopy. Although Raman spectroscopy is a useful tool for the carbon material, we found that there were several problems. We indicated the possibility that the phase Q was not a independent phase and that the release of Q-gas was simply released from the rearrangement of carbon structure during oxidation. Of course we cannot rule out the possibility that phase Q consists of very fine grains. We also succeeded to get the fraction having the highest Q-gas content.