2015 Fiscal Year Final Research Report
Absorption spectroscopy of metal sodium in the extreme ultraviolet spectral region
| Project/Area Number |
26630298
|
|---|
| Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Physical properties of metals/Metal-base materials
|
|---|
| Research Institution | University of Miyazaki |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2014-04-01 – 2016-03-31
|
| Keywords | 真空紫外分光 / レーザー生成プラズマ / レーザーアブレーション / 金属ナトリウム |
|---|
| Outline of Final Research Achievements |
Preparation of sodium vapors was investigated for the spectroscopy of sodium vapors in the vacuum ultraviolet (VUV) by use of laser ablation. Delay time behaviors of absorption by sodium D lines in the visible spectral region indicated that the absorption started at approximately 400 ns and it had a peak at 1000 ns of delay time at 1 mm from a sodium target. A model describing the plasma plume expansion of sodium reproduced the experimental delay time behaviors. As a result, the peak value of neutral sodium number density was evaluated on the order of 1e17 cm-3, which may be high enough to carry on the VUV spectroscopy of sodium.
|
| Free Research Field |
複合新領域
|
