Spectra and Dynamic Properties of Eu 4f76pns Autoionizing States

XUE Zhi-li; SHEN Li; DAI Chang-jian

doi:10.3788/fgxb20183912.1679

您当前的位置：

首页 >

文章列表页 >

Spectra and Dynamic Properties of Eu 4f⁷6pns Autoionizing States

更新时间：2020-08-12

- Spectra and Dynamic Properties of Eu 4f⁷6pns Autoionizing States
- Chinese Journal of Luminescence Vol. 39, Issue 12, Pages: 1679-1686(2018)
- 作者机构：
  
  1. 天津理工大学理学院天津,300384
  2. 天津理工大学显示技术与光电器件教育部重点实验室天津,300384
- 作者简介：
- 基金信息：
  
  Supported by National Natural Science Foundation of China(11174218)
- DOI：10.3788/fgxb20183912.1679
  CLC： O433.5+9;O562.3+1
- Received：15 March 2018，
  
  Revised：04 June 2018，
  
  Published Online：13 June 2018，
  
  Published：05 December 2018
- 稿件说明：
移动端阅览
薛智丽, 沈礼, 戴长建. 铕原子4f76pns系列自电离态的光谱和动力学过程[J]. 发光学报, 2018,39(12): 1679-1686

XUE Zhi-li, SHEN Li, DAI Chang-jian. Spectra and Dynamic Properties of Eu 4f76pns Autoionizing States[J]. Chinese Journal of Luminescence, 2018,39(12): 1679-1686
薛智丽, 沈礼, 戴长建. 铕原子4f76pns系列自电离态的光谱和动力学过程[J]. 发光学报, 2018,39(12): 1679-1686 DOI： 10.3788/fgxb20183912.1679.

XUE Zhi-li, SHEN Li, DAI Chang-jian. Spectra and Dynamic Properties of Eu 4f76pns Autoionizing States[J]. Chinese Journal of Luminescence, 2018,39(12): 1679-1686 DOI： 10.3788/fgxb20183912.1679.

摘要

通过共振激发技术和速度影像法对铕原子4f

s（

=7，8）自电离态进行了系统性的研究。首先采用三步共振激发技术探测光谱，通过前两步固定波长的激光将铕原子激发到4f

态上后扫描第三步激光的波长，使得三步激光的能量总和位于铕原子4f

s（

=7，8）自电离态能域附近，从而得到该自电离态的光谱；然后采用速度影像法对其动力学过程进行探测，经过数据分析得到铕原子4f

s（

=7，8）自电离态的衰变分支比和弹射电子的角分布。不仅从光谱中观察到了强烈的组态相互作用并且确定了部分能态的总角动量，从自电离弹射电子角分布中观察到铕原子4f

s（

=7，8）自电离态复杂的物理机制，还在该能域内观测到了粒子数反转。最后，本文还对孤立实激发技术在探测低

值自电离态光谱的适用性进行了讨论。

Abstract

The spectra and dynamic properties of Eu 4f

8) autoionizing states are studied systematically with the resonance-ionization spectroscopy(RIS) and the velocity-map imaging(VMI) techniques. The RIS technique is utilized to obtain the spectra of Eu 4f

8) autoionizing states with the three-step excitation:the wavelengths of the first two-step lasers are fixed

while that of the last-step laser is scanned around the region of the 4f

8) autoionizing states. The VMI technique is used to detect the dynamic process of autoionization

from which the branching ratio(BR) of ions and the angular distribution(AD) of ejected electrons from Eu 4f

6p7s autoionizing states are achieved. The heavy configuration interaction is observed in the spectra of Eu 4f

8) autoionizing states

measured with RIS spectroscopy technique. The present study reveals the profound variations of AD and BR with energy in the region of the 4f

6p7s autoionization resonance

highlighting the complicated nature of the autoionization process for the lowest member of Eu 4f

s autoionization series. Population inversion is observed by analysis of the BR

while the validity of the well-known isolated core excitation(ICE) technique used for obtaining autoionization spectrum is discussed.

关键词

Keywords

references

ZHANG Y, DAI C J, LI S B, et al.. Angular distribution of ejected electrons from Ba 6pns (J=1) autoionizing states[J]. J. Electron. Spectrosc. Relat. Phenom., 2003, 128:135.

LYRAS A, BACHAU H. Multiple phase control in Mg through the continuum[J]. Phys. Rev. A, 1999, 60(60):4781-4787.

LINDSAY M D, DAI C J, CAI L T, et al.. Angular distributions of ejected electrons from autoionizing 3pnd states of magnesium[J]. Phy. Rev. A, 1992, 46:3789.

BHATTACHARYYA S, NAKHATE S G, JAYASEKHARAN T, et al.. Multichannel quantum-defect-theory analysis of the observed odd-parity 5dnd autoionization Rydberg series of neutral europium[J]. Phys. Rev. A, 2006, 73(6):184.

DAI Z W, JIANG Z K, XU H, et al.. Time-resolved laser-induced fluorescence measurements of Rydberg states in Lu I and comparison with theory[J]. J. Phys. B:At. Mol. Opt. Phys., 2003, 36(3):479.

XU H L, JIANG Z G, SVANBERG S. Radiative lifetimes of Gd I and Gd Ⅱ[J]. J. Phys. B:At. Mol. Opt. Phys., 2003, 36(36):411.

BIMONT E, QUINET P, DAI Z W, et al.. Lifetime measurements and calculations in singly ionized ytterbium[J]. J. Phys. B:At. Mol. Opt. Phys., 2002, 35(22):4743.

唐永建, 张林, 吴卫东, 等. ICF靶材料和靶制备技术研究进展[J]. 强激光与粒子束, 2008, 20(11):1827-1840. TANG Y J, ZHANG L, WU W D, et al.. Research progress on ICF target materials and target fabrication technology[J]. High Power Laser Part. Beams, 2008, 20(11):1827-1840. (in Chinese)

BOKOR J, FREEMAN R R, COOKE W E. Autoionization-pumped laser[J]. Phys. Rev. Lett., 1982, 48(18):1242-1245.

李琼, 沈礼, 闫俊刚, 等. Eu原子4f76p1/2ns自电离过程的动力学特性[J].物理学报, 2016, 65(15):153202. LI Q, SHEN L, YAN J G, et al.. Dynamic properties of Eu 4f76p1/2ns autoionization process[J]. Acta Phys. Sinica, 2016, 65(15):153202. (in Chinese)

WU X R, SHEN L, ZHANG K, et al.. Branching ratio and angular distribution of ejected electrons from Eu 4f76p1/2nd auto-ionizing states[J]. Chin. Phys. B, 2016, 25(9):093203.

YAN J G, SHEN L, LIANG H R, et al.. Branching ratios of autoionization from Eu 4f76p1/26d autoionizing states[J]. Chin. Phys. B, 2015, 24(8):296-301.

ZHANG K, SHEN L, DONG C, et al.. The VMI study on angular distribution of ejected electrons from Eu 4f76p1/26d autoionizing states[J]. Chin. Phys. B, 2015, 24(10):103204.

ASHFOLD M N, NAHLER N H, ORR-EWING A J, et al.. Imaging the dynamics of gas phase reactions[J]. Phys. Chem. Chem. Phys., 2005, 8(1):26-53.

REID K L. Photoelectron angular distributions:developments in applications to isolated molecular systems[J]. Mol. Phys., 2012, 110(3):131-147.

王靖, 沈礼, 杨玉娜, 等.Eu原子4f76p3/2ns自电离态的光谱的研究[J].发光学报, 2017, 38(12):1611-1616. WANG J, SHEN L, YANG Y N, et al.. Study on spectra of Eu 4f76p3/2ns autoionizing states[J]. Chin. J. Lumin., 2017, 38(12):1611-1616. (in English)

董程, 沈礼, 杨金红, 等. 用速度影像法研究Eu原子4f76p1/28s自电离态的弹射电子角分布[J].光学学报, 2014, 34(7):0702001. DONG C, SHEN L, YANG J H, et al.. Angular distribution of ejected electrons from Eu 4f76p1/28s auto-ionizing state studied by velocity mapping imaging technique[J]. Acta Optica Sinica, 2014, 34(7):0702001. (in Chinese)

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Luminescence Performance of Colloidal Quantum Dots Regulated by Band Edge Mode in One-dimensional Photonic Crystals

Directional Luminescence Properties of Organic Thin Film Based on Bloch Surface Waves

Experimental Research on Volume-Bragg-grating External Cavity Red-light Semiconductor Lasers

Study of Odd-parity States of Eu Atom with Two-photon Ionization Detection Technique

Spectra of Eu 4f⁷6p_3/2nd Autoionizing States

Related Author

LIU Xingyuan

LYU Ying

GUO Xiaoyang

ZHANG Yan

MENG Yuan

GUO Xiaoyang

ZOU Deyue

LYU Ying

Related Institution

Changchun UP Optotech Co. Ltd.

University of Chinese Academy of Sciences

State Key Laboratory of Luminescence and Applications， Changchun Institute of Optics， Fine Mechanics and Physics， Chinese Academy of Sciences

State Key Laboratory of High Power Semiconductor Lasers, Changchun University of Science and Technology

School of Science, Tianjin University of Technology

AI问答

Address：No.3888 Dong Nanhu Road, Changchun, Jilin, China Postal code：130033
Tel：0431-86176862 Email：fgxbt@126.com
Technical support is provided by Beijing Founder electronics co., LTD 吉ICP备11002662号-17 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰