Spectra of Odd-parity Rydberg States of Samarium Atom

Zhao-jin XU; Xiao-hu ZHANG; Wen-na ZHANG; Chao-hong HUANG; Li SHEN

doi:10.37188/fgxb20204108.0999

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Spectra of Odd-parity Rydberg States of Samarium Atom

Theoretical Calculation and Spectral Analysis | 更新时间：2020-09-10

- Spectra of Odd-parity Rydberg States of Samarium Atom
- Chinese Journal of Luminescence Vol. 41, Issue 8, Pages: 999-1008(2020)
- 作者机构：
  
  天津理工大学理学院, 天津 300384
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China;Program for Innovative Research Team in
- DOI：10.37188/fgxb20204108.0999
  CLC： O433.1;O433.2
- Published：2020-8，
  
  Received：6 May 2020，
  
  Accepted：28 May 2020
扫描看全文
Zhao-jin XU, Xiao-hu ZHANG, Wen-na ZHANG, et al. Spectra of Odd-parity Rydberg States of Samarium Atom. [J]. Chinese Journal of Luminescence 41(8):999-1008(2020)
DOI：

Zhao-jin XU, Xiao-hu ZHANG, Wen-na ZHANG, et al. Spectra of Odd-parity Rydberg States of Samarium Atom. [J]. Chinese Journal of Luminescence 41(8):999-1008(2020) DOI： 10.37188/fgxb20204108.0999.

摘要

结合共振激发和场电离探测技术，通过总角动量量子数0→1→0→1的激发路径，研究了第一电离阈附近的Sm原子奇宇称Rydberg态4f

6snp（

=1）。首先，在45 200~45 500 cm

-1

能量范围内共发现了94个奇宇称Rydberg能级。其次，通过对有效量子数和Rydberg能级结构特点的分析，将其中68个能级归属为3个束缚Rydberg系列，另外26个能级也给出了能级位置。然后，利用Rydberg-Ritz公式，对3个Rydberg系列分别进行了拟合，获得了Sm原子的电离阈为（45 519.61±0.79）cm

-1

。最后，采用6种偏振组合激发，由偏振选择定则，进一步验证了这些奇宇称Rydberg态总角动量量子数为1。这些结果首次证实了场电离探测技术对Sm原子高激发Rydberg态的适用性，并且通过对奇宇称Rydberg系列拟合得到的Sm原子电离阈与文献中通过偶宇称Rydberg系列获得的值（45 519.64±1.39）cm

-1

基本一致。

Abstract

With resonance excitation and field ionization detection technology

the samarium atom odd-parity Rydberg states 4f

6snp(

=1) near the first ionization limit were studied

via

the excitation path of the total angular momentum quantum number 0→1→0→1. Firstly

a total of 94 odd-parity Rydberg levels were found in the energy range of 45 200~45 500 cm

-1

. Secondly

68 of these levels were assigned to three bound Rydberg series through the analysis of effective quantum number and structural characteristics of Rydberg energy levels

and energies of other 26 levels were given. Then

using the Rydberg-Ritz formula

the three series were fitted respectively

and the ionization limit of the samarium atom was (45 519.61±0.79) cm

-1

. Finally

six kinds of polarization combination were used to excite the samarium atom

and the polarization selection rule further verified that the total angular momentum quantum number of the Rydberg states was 1. The results confirm the applicability of the field ionization detection technology to the highly excited Rydberg states of the samarium atom. Meanwhile

ionization limit of the samarium atom obtained by fitting from the odd-parity Rydberg series is corresponded to the value (45 519.64±1.39) cm

-1

obtained by fitting from the even-parity Rydberg series from the reference.

关键词

Sm原子奇宇称Rydberg态场电离偏振光谱

Keywords

samarium atomodd-parityRydberg statefield ionizationpolarization spectra

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