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arXiv · 1403.4826

Exploring the temporally resolved electron density evolution in EUV induced plasmas

R. M. van der Horst·J. Beckers·S. Nijdam·G. M. W. Kroesen
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Abstract

We measured for the first time the electron density in an Extreme Ultra-Violet induced plasma. This is achieved in a low-pressure argon plasma by using a method called microwave cavity resonance spectroscopy. The measured electron density just after the EUV pulse is $2.6\cdot10^{16}$ m$^{-3}$. This is in good agreement with a theoretical prediction from photo ionization, which yields a density of $4.5\cdot10^{16}$ m$^{-3}$. After the EUV pulse the density slightly increase due to electron impact ionization. The plasma (i.e. electron density) decays in tens of microseconds.

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R. M. van der Horst, J. Beckers, S. Nijdam, G. M. W. Kroesen. 2014-03-19. Exploring the temporally resolved electron density evolution in EUV induced plasmas. https://doi.org/10.1088/0022-3727/47/30/302001

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