FTIR laboratory measurement of Ne i Rydberg states in 1.43−14.3 μm spectral range

¹ J. Heyrovský Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, Dolejškova 3, 18223 Prague 8, Czech Republic
e-mail: svatopluk.civis@jh-inst.cas.cz
² Institute of Physics, Academy of Sciences of the Czech Republic, Na Slovance 2, 18221 Prague 8, Czech Republic
³ Voronezh State University, 394693 Voronezh, Russia

Received: 30 April 2015
Accepted: 26 July 2015

Abstract

Context. The Ne i spectrum in the 800−1800 cm^-1 (5.55−14.3 μm) domain has not been previously investigated.

Aims. To address this spectral gap, we performed high-resolution laboratory measurements of the Ne i emission spectrum over the 800−7000 cm^-1 (1.43−14.3 μm) range.

Methods. The Ne i laboratory spectra were obtained from a pulsed discharge plasma and recorded using time-resolved Fourier transform spectroscopy. The identification of the spectral lines was performed according to the transition probability values calculated using the quantum defect method.

Results. Based on these measurements, we report the wavenumbers of 151 Ne i lines and energy values for 14 Ne i levels that are not listed in the available databases.