Measurement of Ionization Threshold of Ultracold Cesium Rydberg Atoms in Static Electric Field
Measurement of Ionization Threshold of Ultracold Cesium Rydberg Atoms in Static Electric Field
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DOI：
10.1088/0256-307x/25/7/090
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发表时间：
2008-07
影响因子：
3.5
通讯作者：
Feng Zhi-Gang;Zhang Linjie;Zhao Jian-Ming;Li Chang-yong;Liu An-ling;Jia Suo-tang
中科院分区：
文献类型：
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作者：
Feng Zhi-Gang;Zhang Linjie;Zhao Jian-Ming;Li Chang-yong;Liu An-ling;Jia Suo-tang
研究了超冷铯原子在直流电场中的场电离谱。测量了不同电场作用下的电离阈值，得到电离阈值相对于无场电离阈值的偏移量为（6.06 ± 0.14）F1/2，与经典的鞍点模型一致.通过对实验数据的拟合，得到了铯原子（6P 3/2）的无场电离阈值为19674.89 ± 2.99 cm−1。
We investigate the field ionization spectra of ultracold cesium Rydberg atoms in dc electric field. The ionization thresholds of different electric fields are measured and shift of the ionization threshold relative to field-free ionization threshold is accurately described by (6.06 ± 0.14) F1/2, which is in good agreement with the classical saddle-point model for field ionization. We obtain the field-free ionization threshold of cesium (6P3/2) as 19674.89 ± 2.99 cm−1 by fitting experimental data.