| 研究生: |
林湘琴 Lin, Hsiang-chin |
|---|---|
| 論文名稱: |
氣態氫化鈉分子21P電子能階的光譜研究 Spectroscopic Study of the NaH 21P State |
| 指導教授: |
黃守仁
Whang, Thou-Jen |
| 學位類別: |
碩士 Master |
| 系所名稱: |
理學院 - 化學系 Department of Chemistry |
| 論文出版年: | 2007 |
| 畢業學年度: | 95 |
| 語文別: | 中文 |
| 論文頁數: | 88 |
| 中文關鍵詞: | 光譜研究 、氫化鈉 、21P電子能態 |
| 外文關鍵詞: | Sodium Hydride, 21P state, NaH, Spectroscopic study |
| 相關次數: | 點閱:151 下載:1 |
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本論文利用疊加式雙光子共振螢光衰減光譜來研究氣態氫化鈉分子21P電子能態。將實驗值比對之後,目前已確認21P電子能態v*(J=1~5)、v*-1(J=1~7)、v*-2(J=2~9)共20個振轉能階,轉動常數Bv值分佈在0.351~1.023 cm-1之間,並且觀察到21P電子能態在解離極限附近的螢光連續衰減的現象。
這些振轉能階的確認是經由不同中間態相互比對而成,實驗中所選擇的中間態為A1S+電子能態v=10~12這個範圍。將第一道雷射的波長設置在一個由X1S+電子能態躍遷至A1S+電子能態的能量,接著再導入第二雷射設定一段波長範圍作掃描,以獲得21P電子能態的資訊。
我們也利用激發誘導放射螢光來偵測X1S+電子能態,目前已確認X1S+電子能態v=8(J=2~8)共7個振轉能階。
目前氣態氫化鈉分子在更高的電子能階雖有理論計算的文獻發表,但缺乏實驗的研究結果來佐證,本研究觀測分析了氣態氫化鈉分子21P電子能態的光譜,可以提供理論計算的文獻作驗證的工作。
Using optical-optical double resonance fluorescence depletion spectroscopy, we investigated the 21P state and the X1S+ state of sodium hydride in the gas phase. Twenty and seven rovibrational levels of the 21P state and the X1S+ state were assigned and confirmed, respectively. The dissociation limit, H(1s) + Na(3d), of the sodium hydride was also observed in this study.
Although the literature of theoretical calculations about the higher electronic states of sodium hydride has been reported, there are no experimental data to identify it. In this study, we observed and analyzed spectra of the 21P state. The results of experiment are able to examine the results of theoretical calculations.
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