臺灣博碩士論文加值系統

在本光譜學研究中，我們利用兩台脈衝式染料雷射進行雙光子共振螢光衰減光譜技術（Optical-Optical Double Resonance Fluorescence Depletion Spectroscopy）來偵測氣態氫化鈉分子高能位的C1�獺牊q子態，我們採用疊加式雙光子激發（Stepwise OODR excitation）的方式進行實驗，並藉由檢測A1�獺� �_ X1�獺洈瑪疇�衰減訊號來找尋C1�獺牊q子態的振轉能級。
我們觀測的能量範圍位於36690 ~ 41500 cm-1總共得到v*－15 ~ v*－6及v*＋9 ~ v*＋17共19個振動量子數。觀測的轉動量子數分佈於J＝1 ~ 11中，共計有223個振轉能階被觀測到。其振動能階能量差ΔGv＋1/2分佈於189 ~ 89 cm-1中，轉動常數Bv則分佈於0.488 ~ 0.636 cm-1中。
未來期望能再加入更詳盡的實驗數據，且進一步確認絕對振動量子數v值並推得分子常數，使氫化鈉分子C1�獺牊q子態的位能曲線更臻完整。

In this study, nineteen vibrational levels of the NaH C1�獺� electronic state have been observed by the Optical-Optical Double Resonance Fluorescence Depletion Spectroscopy (OODR-FDS) technique. We applied the stepwise OODR excitation in our experiments. The OODR spectra of the NaH C1�獺� electronic state have been taken by monitoring the fluorescence depletion of the A1�獺� state to the X1�獺� state.
We have observed 223 rovibrational levels (including 19 vibrational levels) of the C1�獺� electronic state, they are in the range of 36690 ~ 41500 cm-1. The observed vibrational level spacings of ΔGv＋1/2 are in the range 189 ~ 89 cm-1and derived rotational constants Bv are 0.488 ~ 0.636 cm-1.
However, we have to confirm the absolute vibrational quantum number by a further study and the Dunham coefficients can be derived to construct the complete potential energy curve of the NaH C1�獺� electronic state.

目 錄

中文摘要…………………………………………………………………………... Ⅰ
英文摘要…………………………………………………………………………... Ⅱ
目錄………………………………………………………………………………... Ⅲ
表目錄……………………………………………………………………………... Ⅵ
圖目錄……………………………………………………………………………... Ⅶ
第一章 緒論………………………………………………………………….. 1
1-1 前言……………………………………………………………………. 1
1-2 有關氫化鈉分子電子態的研究………………………………………. 2
1-2-1 氫化鈉分子的X1�獺洬MA1�獺牊q子態之傳統光譜法研究…….... 2
1-2-2 氫化鈉分子的X1�獺洬MA1�獺牊q子態之雷射光譜研究……….... 5
1-2-3 氫化鈉分子的C1�獺牊q子態之理論研究……………………...... 8
1-2-4 氫化鈉分子的C1�獺牊q子態之光譜實驗研究………………...... 9
第二章 理論………………………………………………………………..… 19
2-1 雙原子分子的波函數與能量………………………………...……….. 19
2-2 雙原子分子的項符………………………………………………...….. 24
2-3 雙原子分子躍遷選擇定律…….……………………………………… 24
2-4 杭得耦合（Hund’s Coupling Case）………………………................. 26
2-5 法蘭克-康登原理（Franck-Condon principle）……………………….. 26
2-6 同位素效應（Isotope Effect）…………………………………………. 28
第三章 實驗………………………………………………………………….. 29
3-1 實驗裝置與儀器…………………………………...…………….…..... 29
3-1-1 實驗藥品………………………………………...…………..….. 29
3-1-2 雷射系統………………………………………...…………..….. 29
3-1-3 熱管爐系統…………………………………………...……..….. 34
3-1-4 偵測系統…………………………………………………..……. 36
3-1-5 訊號資料處理…………………..………………………………. 37
3-1-6 頻率校正部分…………………..………………………………. 38
3-2 實驗介紹……………………………..……………………….….……. 40
3-2-1 雙光子共振光譜法簡介…………..……………………………. 40
3-2-2 實驗方法…………………………..……………………………. 43
3-2-3 實驗步驟…………………………..……………………………. 50
第四章 結果與討論………………………………………………………….. 58
4-1 確定氫化鈉分子存在於熱管爐中…………...…………………….…. 58
4-2 氫化鈉分子的X1��+和A1��+電子態之分子常數…….………………, 60
4-3 氫化鈉分子高能位C1��+電子態的OODR偵測……………………… 60
4-3-1 實驗結果………………………..………………………………. 60
4-3-2 確定觀察到氫化鈉分子高能位之C1��+電子態……………….. 62
4-3-2-1 長波長範圍掃瞄圖譜………………………….….…… 62
4-3-2-2 確定偵測到的訊號是氫化鈉分子之C1��+電子態.....… 85
4-3-3 待完成的實驗計畫……………..………..................................... 86
第五章 結論.….….….….….….….….….….….….….….….….….….….….. 91
參考文獻…..….….….….….….….….….….….….….….….….….….….…... 92
附錄..........................………………………………………………………….. 99

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