A new method for determining the plasma electron density using three-color interferometer

Hiroyuki Arakawa; Yasunori Kawano; Kiyoshi Itami

doi:10.1063/1.4731651

A new method for determining the plasma electron density using three-color interferometer

Rev Sci Instrum. 2012 Jun;83(6):063507. doi: 10.1063/1.4731651.

Authors

Hiroyuki Arakawa¹, Yasunori Kawano, Kiyoshi Itami

Affiliation

¹ Japan Atomic Energy Agency, 801-1 Mukoyama, Naka-shi, Ibaraki 311-0193, Japan. arakawa.hiroyuki@jaea.go.jp

PMID: 22755627
DOI: 10.1063/1.4731651

Abstract

A new method for determining the plasma electron density using the fractional fringes on three-color interferometer is proposed. Integrated phase shift on each interferometer is derived without using the temporal history of the fractional fringes. The dependence on the fringe resolution and the electrical noise are simulated on the wavelengths of CO(2) laser. Short-time integrations of the fractional fringes enhance the reliability of this method.