Rapid Communications

Full Text / References

Fireball Generation in a Water Discharge

Youichi SAKAWA, Kazuyoshi SUGIYAMA¹⁾, Tetsuo TANABE¹⁾ and Richard MORE²⁾

Institute of Laser Engineering, Osaka University

1)

Interdisciplinary Graduate School of Engineering Science, Kyushu University

2)

Lawrence Berkeley National Laboratory

(Received 30 June 2006 / Accepted 12 July 2006 / Published 7 August 2006)

Abstract

Fireball generation in a water discharge has been investigated. Time evolution of visible spectra of the fireballs revealed that the emission of ionic lines of Ca and atomic lines of Na, K, Li, and Ca appeared early in time, followed by un-identified molecular-like spectra, and the emission of NaI resonance lines (588.9 and 589.5 nm), remained at the final stage of the fireball.

Copyright (c) 2006 The Japan Society of Plasma Science and Nuclear Fusion Research

Keywords

fireball, ball lightning, water discharge, plasmoid, fast camera, plasma spectroscopy

DOI: 10.1585/pfr.1.039

Full Text

PDF format (114Kbytes)

References

• [1] Special issue on Ball Lightning (compiled and edited by J. Abrahamson), Phil. Trans. R. Soc. London A 360, 1 (2002).
• [2] A.I. Egorov, S.I. Stepanov and G.D. Shabonov, Uspekhi Fizicheskikh Nauk 174, 107 (2004) (Physics-Uspekhi 47, 99 (2004)).
• [3] A.I. Egorov and S.I. Stepanov, Zhurnal Teckhnicheskoi Fiziki 72, 102 (2002) (Technical Physics 47, 1584 (2002)).
• [4] S.I. Stepanov, Dokl. Akad. Nauk 379, 181 (2001) (Dokl. Phys. 46, 467 (2001)).
• [5] R.W.B. Pearse and A.G. Gaydon, The identication of molecular spectra (Wiley, New York, 1976).

This paper may be cited as follows:

Youichi SAKAWA, Kazuyoshi SUGIYAMA, Tetsuo TANABE and Richard MORE, Plasma Fusion Res. 1, 039 (2006).