Branching ratio and angular distribution of ejected electrons from Eu 4f76p1/2nd auto-ionizing states

doi:10.1088/1674-1056/25/9/093203

Abstract

The branching ratios of ions and the angular distributions of electrons ejected from the Eu 4f⁷6p_1/2nd auto-ionizing states are investigated with the velocity-map-imaging technique. To populate the above auto-ionizing states, the relevant bound Rydberg states have to be detected first. Two new bound Rydberg states are identified in the region between 41150 cm^-1 and 44580 cm^-1, from which auto-ionization spectra of the Eu 4f⁷6p_1/2nd states are observed with isolated core excitation method. With all preparations above, the branching ratios from the above auto-ionizing states to different final ionic states and the angular distributions of electrons ejected from these processes are measured systematically. Energy dependence of branching ratios and anisotropy parameters within the auto-ionization spectra are carefully analyzed, followed by a qualitative interpretation.

Keywords: velocity-map imaging Eu 4f⁷6p_1/2nd auto-ionizing state branching ratio angular distribution

Received: 29 February 2016
Revised: 24 May 2016
Accepted manuscript online:

PACS:	32.80.Zb	(Autoionization)
	32.30.-r	(Atomic spectra?)
	32.80.Ee	(Rydberg states)

Fund:

Project supported by the National Natural Science Foundation of China (Grant No. 11174218).

Corresponding Authors: Chang-Jian Dai
E-mail: daicj@126.com

Cite this article:

Xiao-Rui Wu(武晓瑞), Li Shen(沈礼), Kai Zhang(张开), Chang-Jian Dai(戴长建), Yu-Na Yang(杨玉娜) Branching ratio and angular distribution of ejected electrons from Eu 4f⁷6p_1/2nd auto-ionizing states 2016 Chin. Phys. B 25 093203

[1]	Zhang J, Shen L and Dai C J 2015 Chin. Phys. B 24 113201
[2]	Yang J H, Wang X, Shen L and Dai C J 2013 Acta Optica Sin. 33 1030002 (in Chinese)
[3]	Xie J, Dai C J and Li M 2011 J. Phys. B: At. Mol. Opt. Phys. 44 015002
[4]	Wang X, Shen L and Dai C J 2012 J. Phys. B: At. Mol. Opt. Phys. 45 165001
[5]	Li M, Dai C J and Xie J 2011 J. Quantative Spectroscopy Radiative Transfer 112 793
[6]	Jing H, Ye S W and Dai C J 2015 Chin. Phys. B 24 013203
[7]	Kachru R, Tran N H, Pillet P and Gallagher T F 1985 Phys. Rev. A 31 218
[8]	Dong C, Shen L, Yang J H and Dai C J 2014 Acta. Optica Sin. 34 0702001 (in Chinese)
[9]	Liang H R, Shen L, Jing H and Dai C J 2014 Acta Phys. Sin. 63 133202 (in Chinese)
[10]	Dai C J 1996 Phys. Rev. A 53 3237
[11]	Lü J, Dai C J, Xu Y F and Li S B 2001 Chin. Phys. Lett. 18 516
[12]	Lindsay M D, Cai L T, Schinn G W, Dai C J and Gallagher T F 1992 Phys. Rev. A 45 231
[13]	Lindsay M D, Dai C J, Cai L T, Gallagher T F, Robicheaux F and Gteene C H 1992 Phys. Rev. A 46 3789
[14]	Yan J G, Shen L, Liang H R and Dai C J 2015 Chin. Phys. B 24 083203
[15]	Zhang K, Shen L, Dong C and Dai C J 2015 Chin. Phys. B 24 103204
[16]	Ashfold M N R, Nahler H N, Orr-Ewing A J, et al. 2006 Phys. Chem. Chem. Phys. 8 26
[17]	Stodolna A S, Rouzee A, Lepine F, Cohen S, Robicheaux F, Gijsbertsen A, Jungmann J H, Bordas C and Vrakking M J J 2013 Phys. Rev. Lett. 110 213001
[18]	Tauro S and Liu K 2008 J. Phys. B: At. Mol. Opt. Phys. 41 225001
[19]	Eppink A T J B and Parker D H 1997 Rev. Sci. Instrum. 68 3477
[20]	Dai C J, Schinn G W and Gallagher T F 1990 Phys. Rev. A 42 223
[21]	Martin W C, Zalubas R and Hagan L 1978 Energy Levels-The Rare Earth Elements (Washington: National Bureau of Standards) pp. 185-198
[22]	Xie J, Dai C J and Li M 2010 Acta Optica Sin. 30 2142 (in Chinese)

[1]	Ultrafast photoionization of ions and molecules by orthogonally polarized intense laser pulses: Effects of the time delay Si-Qi Zhang(张思琪), Zhi-Jie Yang(杨志杰), Zhi-Xian Lei(雷志仙), Wei Feng(冯伟), Sheng-Peng Zhou(周胜鹏), Kai-Jun Yuan(元凯军), Xue-Shen Liu(刘学深), and Jing Guo(郭静). Chin. Phys. B, 2021, 30(1): 013201.
[2]	Photoelectron imaging on vibrational excitation and Rydberg intermediate states in multi-photon ionization process of NH₃ molecule Ya-Nan Sun(孙亚楠), Yan-Hui Wang(王艳辉), Le-Le Song(宋乐乐), Hai-Bin Du(杜海滨), Xiao-Chun Wang(王晓春), Lan-Lai He(赫兰海), Si-Zuo Luo(罗嗣佐), Qin Yang(杨钦), Jing Leng(冷静), Fu-Chun Liu(刘福春). Chin. Phys. B, 2020, 29(9): 093201.
[3]	Accurate electron affinity of atomic cerium and excited states of its anion Xiao-Xi Fu(付筱茜), Ru-Lin Tang(唐如麟), Yu-Zhu Lu(陆禹竹), Chuan-Gang Ning(宁传刚). Chin. Phys. B, 2020, 29(7): 073201.
[4]	Laser-assisted XUV double ionization of helium atoms: Intensity dependence of joint angular distributions Fengzheng Zhu(朱风筝), Genliang Li(黎根亮), Aihua Liu(刘爱华). Chin. Phys. B, 2020, 29(7): 073202.
[5]	Photoelectron imaging of resonance-enhanced multiphoton ionization and above-threshold ionization of ammonia molecules in a strong 800-nm laser pulse Le-Le Song(宋乐乐), Ya-Nan Sun(孙亚楠), Yan-Hui Wang(王艳辉), Xiao-Chun Wang(王晓春), Lan-Hai He(赫兰海), Si-Zuo Luo(罗嗣佐), Wen-Hui Hu(胡文惠), Qiu-Nan Tong(佟秋男), Da-Jun Ding(丁大军), Fu-Chun Liu(刘福春). Chin. Phys. B, 2019, 28(6): 063201.
[6]	Effect of laser polarization on strong-field ionization and fragmentation of nitrous oxide molecules Rui Wang(王瑞), Shi-Wen Zhang(张世文), Yang Liu(刘洋), Tian Sun(孙添), Hang Lv(吕航), Hai-Feng Xu(徐海峰). Chin. Phys. B, 2019, 28(5): 053301.
[7]	Branching ratios of autoionization from Eu 4f⁷6p_1/26d [J] autoionizing states Yan Jun-Gang (闫俊刚), Shen Li (沈礼), Liang Hong-Rui (梁洪瑞), Dai Chang-Jian (戴长建). Chin. Phys. B, 2015, 24(8): 083203.
[8]	Theoretical prediction of energy dependence for D+BrO→DBr+O reaction: The rate constant and product rotational polarization Zhang Ying-Ying (张莹莹), Xie Ting-Xian (解廷献), Li Ze-Rui (李泽瑞), Shi Ying (石英), Jin Ming-Xing (金明星). Chin. Phys. B, 2015, 24(3): 038201.
[9]	The VMI study on angular distribution of ejected electrons from Eu 4f⁷6p_1/26d autoionizing states Zhang Kai (张开), Shen Li (沈礼), Dong Cheng (董程), Dai Chang-Jian (戴长建). Chin. Phys. B, 2015, 24(10): 103204.
[10]	Investigation on the influence of atomic potentials on the above threshold ionization Tian Yuan-Ye (田原野), Li Su-Yu (李苏宇), Wei Shan-Shan (魏珊珊), Guo Fu-Ming (郭福明), Zeng Si-Liang (曾思良), Chen Ji-Gen (陈基根), Yang Yu-Jun (杨玉军). Chin. Phys. B, 2014, 23(5): 053202.
[11]	Imprints of molecular orbitals using photoelectron angular distribution by strong laser pulses of circular polarization Ren Xiang-He (任向河), Zhang Jing-Tao (张敬涛), Wu Yan (吴艳), Ma Hui (马慧), Xu Yu-Long (许玉龙). Chin. Phys. B, 2013, 22(7): 073304.
[12]	Low-energy structure in the ionization of argon: Comparison of experiment with theory Feng Li-Qiang (冯立强), Chu Tian-Shu (楚天舒), Wang Li (王利). Chin. Phys. B, 2013, 22(2): 023302.
[13]	Angular distributions of CH₃I fragment ions under the irradiation of single pulse and trains of ultrashort laser pulses Song Yao-Dong (宋耀东), Chen Zhou (陈洲), Sun Chang-Kai (孙长凯), Hu Zhan (胡湛). Chin. Phys. B, 2013, 22(1): 013302.
[14]	Multiple-plateau structure and scaling relation in photoelectron spectra of high-order above-threshold ionization Wu Yan (吴艳), Ye Hui-Liang (叶会亮), Zhang Jing-Tao(张敬涛), and Guo Dong-Sheng (郭东升) . Chin. Phys. B, 2012, 21(5): 053201.
[15]	Transmission of 18 keV negative ions Cl^- through nanocapillariesin Al₂O₃ membrane Lü Xue-Yang(吕学阳),Chen Lin(陈林),Chen Xi-Meng(陈熙萌),Jia Juan-Juan(贾娟娟), Zhou Peng(周鹏),Zhou Chun-Lin(周春林), Qiu Xi-Yu(邱玺玉),Shao Jian-Xiong(邵剑雄), Cui Ying(崔莹),Yin Yong-Zhi(尹永智),Wang Hong-Wei(王宏伟),and Ji Ming-Chao(姬明超) . Chin. Phys. B, 2011, 20(1): 013401.

No Suggested Reading articles found!

Viewed

Full text

Abstract

Cited

Metrics
Related Articles

Branching ratio and angular distribution of ejected electrons from Eu 4f76p1/2nd auto-ionizing states

Cite this article:

Online attention

Branching ratio and angular distribution of ejected electrons from Eu 4f⁷6p_1/2nd auto-ionizing states