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研究生： 林融信
Lin, Rong-Sin
論文名稱： 氘化鈉分子X1Σ+與部分D1Σ+電子能態之雙光子共振螢光減量光譜
Study of the NaD X1Σ+ State and Part of D1Σ+ State by OODR Depletion Spectroscopy
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： 2014
畢業學年度： 102
語文別： 中文
論文頁數： 111
中文關鍵詞： 氘化鈉分子 、雙光子共振 、螢光減量 、X1Σ+電子能態 、D1Σ+電子能態
外文關鍵詞： sodium deuteride molecular, optical-optical double resonance, fluorescence depletion, X1Σ+ state, D1Σ+ state
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    • 本篇論文使用摻銣石榴石雷射驅動兩道可調變波長的染料雷射作用在氘化鈉分子上，使其激發形成雙光子共振螢光減量光譜，並以此探討氘化鈉分子的基態X1Σ+與激發態D1Σ+。
    研究的第一個部分討論基態X1Σ+。利用第一道染料雷射搭配400E將氘化鈉激發到中間態A1Σ+，再用第二道染料雷射搭配RB、R6G、DCM、LDS759和LDS798往下進行誘導放射得到氘化鈉基態X1Σ+的訊號。本研究總共觀測到了X1Σ+能態54個振轉能階數據，其中含有v"＝11~13,16~19的振動能階，包括轉動能階J"＝3~10。實驗數據藉由擬合的方式可以得到氘化鈉分子基態X1Σ+的振動能階能量差〖ΔG〗_(v+1⁄2)值、轉動常數B_v值。最後得到一組Dunham係數與RKR位能曲線圖，對於氘化鈉分子基態X1Σ+的研究有很大的助益。
    第二個部分討論激發態D1Σ+。利用第一道染料雷射搭配400E將氘化鈉分子激發到中間態A1Σ+，再用第二道染料雷射搭配RB與R6G往上進行探測，終於首次得到氘化鈉分子D1Σ+能態的訊號。本研究總共觀測到了D1Σ+能態72個振轉能階數據，其中含有v*~v*＋3四個振動能階，包括轉動能階J＝2~12。

    The X1Σ+ ground state and D1Σ+ state of the NaD were observed by using fluorescence depletion in pulsed optical-optical double resonance (OODR) spectroscopy. The monitored fluorescence of the A1Σ+ state is induced back to the X1Σ+ ground state when the NaD molecules is excited to the X1Σ+ ground state via Stimulated Emission Pumping (SEP) type and D1Σ+ state via Stepwise type. The total of 54 rovibrational levels of X1Σ+ state, v" = 11-19 and J" = 3-10 and the total of 72 rovibrational levels of D1Σ+ state, v = v*-v* + 3 and J = 2-12, were obtained. In this work, we reported a set of Dunham coefficient and the Rydberg-Klein-Rees (RKR) potential curve for the NaD X1Σ+ ground state; the NaD D1Σ+ state were observed at first time.

    中文摘要....................................................I 英文摘要...................................................II 誌謝......................................................VI 目錄....................................................VIII 表目錄....................................................XII 圖目錄....................................................XIV 第一章 緒論.................................................1 1-1 研究背景暨動機...........................................1 1-2 氘化鈉研究概況...........................................8 第二章 量子理論.............................................11 2-1 簡單雙原子分子的波函數....................................11 2-2 分子常數推導............................................12 2-3 RKR（Rydberg-Klein-Rees）位能曲線.......................16 2-4 雙原子分子的電子躍遷選擇律................................17 2-5 法蘭克–康登原理（Franck-Condon principle）...............18 2-6 分子軌域項符（Term Symbol）..............................19 2-7 同位素位移（Isotope Shift）.............................21 2-8 Fano’s profile........................................24 第三章 實驗................................................25 3-1 實驗儀器裝置............................................25 3-1-1 雷射系統.............................................25 3-1-2 熱管爐系統...........................................27 3-1-3 訊號偵測系統..........................................29 3-1-4 訊號收集系統..........................................31 3-1-5 校正雷射波長系統.......................................33 3-2 實驗藥品與染料..........................................34 3-3 實驗方式暨原理..........................................36 3-3-1 實驗方式簡介..........................................36 3-3-2 光譜法介紹...........................................37 3-3-3 研究氘化鈉分子能態實驗..................................44 第四章 氘化鈉分子X1Σ+能態研究.................................50 4-1 氘化鈉分子中間態A1Σ+的使用與確認...........................50 4-2 實驗訊號之校正..........................................54 4-2-1 基態v=11~13,16~17的校正..............................54 4-2-2 基態v"=19的校正......................................58 4-3 圖譜訊號分析............................................59 4-3-1 LIF圖譜與FCF值之關係..................................59 4-3-2 OODR圖譜訊號分析......................................60 4-4 氘化鈉分子基態X1Σ+數據分析................................63 4-4-1 振動常數與轉動常數.....................................63 4-4-2 Dunham分子常數與RKR曲線...............................70 4-5 實驗難處與未來實驗工作....................................75 4-6 結論..................................................76 第五章 氘化鈉分子D1Σ+能態研究.................................78 5-1 實驗訊號之校正..........................................78 5-2 探測氘化鈉分子D1Σ+能態緣起................................81 5-3 發現D1Σ+能態訊號........................................84 5-4 D1Σ+能態訊號訊號分析.....................................86 5-5 未來實驗計畫............................................91 5-6 結論..................................................92 參考文獻...................................................94 附錄A 氘化鈉分子基態X1Σ+的振轉能量.............................97 附錄B 氘化鈉分子激發態D1Σ+的振轉能量...........................99 附錄C X1Σ+能態與A1Σ+能態間的法蘭克-康登因子....................103 附錄D Pumping laser 能量值（cm-1）.........................106 附錄E X1Σ+能態Dunham程式輸出結果............................107

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