Eu原子偶宇称高激发态的场电离探测

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利用共振激发技术和电场电离(EFI)方法研究了铕(Eu)原子偶宇称高激发态。实验共探测到89个态,其中报道了56个态的能级位置和光谱归属等信息。经过对有效主量子数和量子亏损进行理论分析,并结合文献结果的对比,不但认定它们属于4f76s(9S) np(8PJ或10PJ)里德伯系列,还填补了该系列中n=19~39各态的文献空白。另外,建议将Eu原子第一电离限修正为45734.2 cm-1,同时解释了在其附近所观察到的宽峰的物理机制。
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