2011 Fiscal Year Final Research Report
Deuterium fractionation of water molecule via grain surface reactions at very low temperatures
| Project/Area Number |
21540502
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Geochemistry/Astrochemistry
|
|---|
| Research Institution | Hokkaido University |
|---|
Principal Investigator |
WATANABE Naoki 北海道大学, 低温科学研究所, 教授 (50271531)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
HIDAKA Hiroshi 北海道大学, 低温科学研究所, 助教 (00400010)
|
|---|
| Project Period (FY) |
2009 – 2011
|
| Keywords | 地球外物質化学 / 重水素濃集 |
|---|
| Research Abstract |
Water molecule formation and its deuterium fractionation via surface tunneling reactions were investigated experimentally, relevant to chemical evolution in a molecular cloud. We found that H_2O molecule is produced by tunneling reaction, OH + H_2, at very low temperature surfaces and that, from the isotope effect on the above reaction, the formation of OD is essential for deuterium fractionation of water rather than HD or D_2 formation.
|
