Table of Contents
International Journal of Spectroscopy
Volume 2011, Article ID 578374, 5 pages
Research Article

Isotope Shifts in High Lying Levels of Dy I and Er I by High-Resolution UV Laser Spectroscopy

Department of Physics, Faculty of Science, Toho University, Miyama 2-2-1, Funabashi, Chiba 274-8510, Japan

Received 15 September 2011; Accepted 6 October 2011

Academic Editor: Kam-Sing Wong

Copyright © 2011 Wei-Guo Jin et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


High-resolution atomic-beam ultraviolet (UV) laser spectroscopy in Dy I and Er I has been performed. Isotope shifts have been measured for two transitions in Dy I and one transition in Er I. Specific mass shifts and field shifts have been derived for the studied transitions, and large differences between the two 4 𝑓 1 0 6 𝑠 2 4 𝑓 1 0 6 𝑠 6 𝑝 transitions in Dy I have been found. From the derived specific mass shifts and field shifts, configuration mixing at the upper levels of transitions has been discussed.