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1. 天津理工大学 理学院 天津,300384
2. 显示技术与光电器件教育部重点实验室 天津,300384
纸质出版日期:2015-7-3,
收稿日期:2015-4-3,
修回日期:2015-5-7,
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张婧, 沈礼, 戴长建. 铕原子Rydberg态的场电离研究[J]. 发光学报, 2015,36(7): 757-762
ZHANG Jing, SHEN Li, DAI Chang-jian. Field Ionization of Eu Rydberg States[J]. Chinese Journal of Luminescence, 2015,36(7): 757-762
张婧, 沈礼, 戴长建. 铕原子Rydberg态的场电离研究[J]. 发光学报, 2015,36(7): 757-762 DOI: 10.3788/fgxb20153607.0757.
ZHANG Jing, SHEN Li, DAI Chang-jian. Field Ionization of Eu Rydberg States[J]. Chinese Journal of Luminescence, 2015,36(7): 757-762 DOI: 10.3788/fgxb20153607.0757.
利用三步激光共振激发结合场电离探测技术
系统地研究了铕原子归属于第一电离限4f
7
6s
9
S
4
的4f
7
6s
n
p Rydberg态的场电离过程
得到了铕原子 4f
7
6s
n
p Rydberg 态的场电离光谱图。在光激发之后施加脉宽为0.2 s的脉冲电场
连续扫描电压得到场电离过程图。从4f
7
6s
n
p Rydberg态的场电离过程图谱中
可以精确地获得态的场电离阈
观察电场逐步从0到3 kV变化时原子的演化过程。特别是
受黑体辐射的影响
一些结构出现在了场电离光谱图上。
The field ionization process of Eu 4f
7
6s
n
p Rydberg states converging to the first ionization limit 4f
7
6s
9
S
4
was systematically investigated. Firstly
the spectra of Rydberg states 4f
7
6s
n
p of Eu atom were measured using the three-step laser excitation and electric field ionization (EFI) method. Secondly
the EFI pulse(pulse width of 0.2 s)was applied after laser excitation. Then
we continuously scan field ionization voltage to observe the EFI process
and to realize the potential of field ionization we need to understand what happens to the atoms as the pulse field rises from 0 to 3 kV. The exact location of ionization threshold can be obtained when the peak of ionization field changes. Especially
above the threshold
some structures are found due to black body radiation (BBR).
铕原子Rydberg态场电离场电离阈
Eu atomRydberg statefield ionizationionization threshold
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