A study of the hyperfine structure of Ta I lines based on Fourier transform spectra and laser-induced fluorescence

被引：4

作者：

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

Uddin, Z. ^{[2
,3
]}

Guthoehrlein, G. H. ^{[4
]}

Windholz, L. ^{[2
]}

Dembczynski, J. ^{[1
]}

机构：

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

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

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

[4] Helmut Schmidt Univ, D-22043 Hamburg, Germany

来源：

PHYSICA SCRIPTA | 2009年 / 80卷 / 02期

关键词：

TANTALUM;

D O I：

10.1088/0031-8949/80/02/025301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The hyperfine structure of several spectral lines of the tantalum atom has been investigated by laser excitation in the spectral range 4180-7000 angstrom. We report the discovery of 14 new energy levels of even parity and 21 new energy levels of odd parity. For the new levels, besides their wave number, their total angular momentum quantum number J, their parity, as well as their magnetic dipole and electric quadrupole hyperfine interaction constants A and B were determined. We classified altogether 73 lines by means of laser spectroscopy in a hollow cathode discharge, 52 of them by laser excitation and 21 via fluorescence decay. Additionally, 120 lines, observed in high-resolution Fourier transform spectra, were classified by using their wave numbers and their characteristic hyperfine patterns.

引用

页数：10