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A 100 KW Class Applied-field Magnetoplasmadynamic Thruster

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Note: Simple 100 Hz N₂ laser with longitudinal discharge tube and high-voltage power supply using neon sign

K Uno¹, T Jitsuno²

¹Graduate Faculty of Interdisciplinary Research Faculty of Engineering, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi 400-8511, Japan.

The Review of Scientific Instruments

|January 1, 2018

Abstract:

We developed a longitudinally excited N₂ laser with a simple driver circuit and a simple power supply. The N₂ laser consisted of a 20 cm-long glass tube with an inner diameter of 2.5 mm, a normal stable resonator formed by flat mirrors, a variable transformer, a neon sign transformer, a spark gap, and a 200 pF capacitance. The N₂ laser produced a laser pulse with an energy of 379 nJ and a pulse width of 7.5 ns at a repetition rate of 100 Hz. The laser beam was circular and had a Gaussian profile with a correlation factor of 0.992 93.

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