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 FluorescenceDepletion Spectroscopy）來偵測氣態氫化鈉分子高能位的C1S＋電子態及SEP 的訊號。我們採用疊加式雙光子激發（Stepwise OODR）
在2000 年， Pesl 等人利用H2和Na2交叉分子束實驗產生NaH分子，再進行激發光譜研究，觀測到X1S＋的最高振動量子數為v²＝ 9。我們觀測的能量範圍位於9525 ~ 15047 cm-1 總共得到共v²＝9 ~ 17 之9 個振動量子數。觀測的轉動量子數分佈於J＝2 ~ 10 中，共計有96 個振轉能階被觀測到。其振動能階能量差ΔGv² ＋1/2 分佈於547 ~ 804 cm-1中，轉動常數Bv² 則分佈於1.658 ~ 3.620 cm-1 中。
由上述的方法，並藉由檢測A1S＋ ® X1S＋的螢光衰減訊號來找尋C1S＋電子態的振轉能級。我們觀測的能量範圍位於40886 ~ 41526cm-1總共得到共v*－17 ~ v*－16 及v*＋12 ~ v*＋19 總共8個振動量子數。觀測的轉動量子數分佈於J＝1 ~ 11 中，共計有114 個振轉能階被觀測到。其振動能階能量差ΔGv＋1/2分佈於89 ~ 116 cm-1中，轉動常數Bv 則分佈於0.462 ~ 0.575 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C1S＋電子態的位能曲線更臻完整。

In this study we use two pulse dye lasers to detect NaH molecularsignals by the Optical-Optical Double Resonance FluorescenceDepletion Spectroscopy (OODR-FDS) technique.The energy level of NaH X1S＋state and C1S＋state were probed by stepwise OODR and stimulated emission pumping schames, respectively.
In 2000 , NaH molecules were produced by reactive scattering of H2 and Na2 in a crossed beam experiment, X1S＋ground state has been observed up to v²＝ 9.We have observed 96 rovibrational levels including 9 vibrational levels of the X1S＋electronic state, they are in the
range of 9525 ~ 15047 cm-1. The observed vibrational level spacings of ΔGv²＋1/2 are in the range 547 ~ 804 cm-1 and the rotational constants Bv² are 1.658 ~ 3.620 cm-1.
We have observed rovibrational levels including 8 vibrational levels of the C1S＋ electronic state, they are in the range of 40886 ~ 41526 cm-1. The observed vibrational level spacings of ΔGv＋1/2 are in the range 89 ~ 116cm-1 and the rotational constants Bv are 0.462 ~ 0.575 cm-1.
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 C1S＋ electronic state.

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