New even-parity fine structure levels of the Lanthanum atom discovered by means of optogalvanic spectroscopy

被引：18

作者：

Gamper, B. ^{[1
]}

Glowacki, P. ^{[1
,2
]}

Siddiqui, Imran ^{[1
,3
]}

Dembczynski, J. ^{[4
]}

Windholz, L. ^{[1
]}

机构：

[1] Graz Univ Technol, Inst Expt Phys, A-8010 Graz, Austria

[2] Poznan Univ Tech, Fac Tech Phys, Lab Quantum Engn & Metrol, PL-60965 Poznan, Poland

[3] Univ Karachi, Dept Phys, Karachi 75270, Pakistan

[4] Poznan Univ Tech, Fac Elect Engn, Inst Control & Informat Engn, PL-60965 Poznan, Poland

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2014年 / 47卷 / 16期

关键词：

HYPERFINE-STRUCTURE; QUADRUPOLE-MOMENT;

D O I：

10.1088/0953-4075/47/16/165001

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Laser excitation of an Ar-La plasma, generated in a hollow cathode discharge lamp, has allowed to us observe a huge number of spectral lines that could not be interpreted as transitions between already known La energy levels. From the observed hyperfine structure patterns and fluorescence lines, we derived 37 new La levels, all with even parity, in the energy range between 38 000 cm(-1) and 43 000 cm(-1). The existence of these levels was then proved by excitations from other known lower levels.

引用

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