Two-step laser spectroscopy of the np 2P1/2,3/2 Rydberg levels in thallium

被引：8
|
作者：
Riaz, M [1 ]
Mahmood, S [1 ]
Anwar-Ul-Haq, M [1 ]
Baig, MA [1 ]
机构：
[1] Quaid I Azam Univ, Dept Phys, Atom & Mol Phys Lab, Islamabad 45320, Pakistan
来源：
OPTICS COMMUNICATIONS | 2005年 / 244卷 / 1-6期
关键词：
D O I：
10.1016/j.optcom.2004.09.052
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
New data on the energies and quantum defects of the highly excited Rydberg levels of thallium are presented using the two-step resonant excitation spectroscopic technique. The spectra were observed using two dye lasers simultaneously pumped by the SHG 532 rim and THG 355 nm of a Nd:YAG laser in conjunction with a thermionic diode ion detector. The Rydberg series 6s(2) np P-2(1/2) (15 less than or equal to n less than or equal to 31) and np P-2(3/2) (15 less than or equal to n less than or equal to 56) have been studied via the 6s(2) 7s S-2(1/2) intermediate state. The first ionization potential is derived as 49266.66(5) cm(-1), which is in good agreement with the earlier work. The relative intensities of the np P-2(1/2.3/2) series decrease monotonically and follow the 1/n(2.3) scaling. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：339 / 347
页数：9
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