Eur. Phys. J. D 40, 81-89 (2006)
https://doi.org/10.1140/epjd/e2006-00132-1

Hyperfine structure and isotope shifts in near-infrared transitions of atomic nitrogen

Department of Physics and Astronomy, Colby College, Waterville, ME, 04901, USA

Corresponding author: ^a datate@colby.edu

Received: 24 March 2006
Revised: 2 May 2006
Published online: 15 June 2006

Abstract

We have obtained Doppler-free spectra of transitions in the → 2p²(³P) and → multiplets of atomic nitrogen using saturated absorption spectroscopy. These multiplets consist of respectively of seven and eight transitions, and have center of gravity wavelengths of 821 nm and 869 nm. Values for the hyperfine structure coupling constants of all the upper and lower states for these multiplets were obtained for both ¹⁴N and ¹⁵N. Isotope shifts of three transitions in each multiplet were also measured, and a significant J-dependence to the shifts was observed.