The absorption spectrum of Ne i was observed photographically in the wavelength region of 565–595 Å with the high-resolution spectrograph at the Photon Factory in Japan. From the observed term values, the first ionization potentials I(2p5 2P3/2) and I(2p5 2P1/2) were found to be 173 930.0 ± 0.2 and 174 710.4 ± 0.2 cm−1, respectively. Furthermore, the five-channel quantum-defect theory is applied to the analysis of the present experimental term values. It is found that the multichannel quantum-defect theory describes well the absorption spectrum of Ne i observed in the present measurement.
© 1988 Optical Society of America
Original Manuscript: December 4, 1987
Manuscript Accepted: May 17, 1988
Published: October 1, 1988
Kenji Ito, Kiyoshi Ueda, Kouichi Yoshino, Yumio Morioka, and Takeshi Namioka, "High-resolution absorption spectrum of Ne i in the region of 565–595 Å," J. Opt. Soc. Am. B 5, 2006-2014 (1988)