Spectroscopy of Hydrogen, Helium, Neon and Mercury Low-Pressure Discharge and a Barcode-like Periodic Table Based on Energy Levels

Yusei Maeda^1,3 and Syuji Miyazaki^2,3*

¹Kumamoto Prefectural Uto Junior and Senior High School, Kojo-machi, Uto-shi, Kumamoto 869-0454, Japan
²Graduate School of Informatics, Kyoto University, Yoshida-Honmachi, Sakyo-ku, Kyoto 606-8501, Japan
³ELCAS, Kyoto University, Yoshida-Honmachi, Sakyo-ku, Kyoto 606-8501, Japan
^*E-mail address: miyazaki.syuji.8m@kyoto-u.ac.jp

(Received May 11, 2018; Accepted June 7, 2019)

Abstract. Strong spectral lines in the visible range are obtained from luminescence generated by low-pressure gas discharge tubes of hydrogen, neon, helium, and mercury. Although the spectrum of neon is complicated at first glance, the energy levels are degenerate and clustered; this means that the level statistics differ from the Wigner surmise, which is closely related to level repulsion and quantum chaos. We present a visualization of the lower 99 energy levels of each atom in a barcode-like periodic table.

Keywords: Gastube, Discharge, Periodic Table, Energy Level