Spectra of Odd-parity Rydberg States of Samarium Atom

被引：0

作者：

Xu Z.-J. ^{[1
]}

Zhang X.-H. ^{[1
]}

Zhang W.-N. ^{[1
]}

Huang C.-H. ^{[1
]}

Shen L. ^{[1
]}

机构：

[1] School of Science, Tianjin University of Technology, Tianjin

来源：

Faguang Xuebao/Chinese Journal of Luminescence | 2020年 / 41卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Field ionization; Odd-parity; Polarization spectra; Rydberg state; Samarium atom;

D O I：

10.37188/fgxb20204108.0999

中图分类号：

学科分类号：

摘要：

With resonance excitation and field ionization detection technology, the samarium atom odd-parity Rydberg states 4f66snp(J=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. © 2020, Science Press. All right reserved.

引用

页码：999 / 1008

页数：9

共 40 条

[1] HOLLENSTEIN U, SEILER R, SCHMUTZ H, Et al., Selective field ionization of high Rydberg states: application to zero-kinetic-energy photoelectron spectroscopy, J. Chem. Phys, 115, 12, pp. 5461-5469, (2001)
[2] RATH A D, KUNDU S, RAY A K., Total angular momenta of high-lying odd levels of U I at ~4 eV using resonance ionization laser polarization spectroscopy, J. Quant. Spectrosc. Radiat. Transf, 206, pp. 328-332, (2018)
[3] MATSUOKAL, HASEGAWA S., Two-color resonance ionization spectroscopy of highly excited titanium atoms, J. Opt. Soc. Am. B, 24, 10, pp. 2562-2579, (2007)
[4] WANG Q, WANG S, KANG Z H, Et al., Experimental branching fractions, transition probabilities and oscillator strengths of some levels in Ba I, J. Quant. Spectrosc. Radiat. Transf, 199, pp. 89-92, (2017)
[5] FIELDS G, ZHANG X, DUNNING F B, Et al., Autoionization of very-high-n strontium Rydberg states, Phys. Rev. A, 97, 1, (2018)
[6] KALAITZIS P, DANAKAS S, BORDAS C, Et al., Near-saddle-point-energy photoionization microscopy images of Stark states of the magnesium atom, Phys. Rev. A, 99, 2, (2019)
[7] YANG H F, GAO W, QUAN W, Et al., Core effect on the diamagnetic spectrum of barium Rydberg states, Phys. Rev. A, 85, 3, (2012)
[8] VAILLANT C L, JONES M P A, POTVLIEGE R M., Long-range Rydberg-Rydberg interactions in calcium, strontium and ytterbium, J. Phys. B: Atomic, Mol. Opt. Phys, 45, 13, (2012)
[9] YUAN W G, DAI C J, JIN S, Et al., Study of Ba 6pnd (J=1, 3) autoionizing states, Acta Phys. Sinica, 57, 7, pp. 4076-4082, (2008)
[10] ZHU S B, CHEN T, LI X L, Et al., Polarization spectroscopy of 1S0-1P1 transition of neutral ytterbium isotopes in hollow cathode lamp, J. Opt. Soc. Am. B, 31, 10, pp. 2302-2309, (2014)

← 1 2 3 4 →