2010 Fiscal Year Final Research Report
The origin of the main component of noble gases in meteorite and its cosmogenic/ geochemical implications
| Project/Area Number |
18104010
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (S)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
Geochemistry/Astrochemistry
|
|---|
| Research Institution | Osaka University |
|---|
Principal Investigator |
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
NARA Masayuki 東京医科歯科大学, 教養部, 教授 (90301168)
|
|---|
| Project Period (FY) |
2006 – 2010
|
| Keywords | 隕石科学 / 希ガス / 同位体 / Q / プレソーラーダイヤモンド / 炭素 |
|---|
| Research Abstract |
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.
|
