Volume 89, Number 6, March 2010
|Number of page(s)||4|
|Section||Physics of Gases, Plasmas and Electric Discharges|
|Published online||16 April 2010|
Oscillatory Langmuir probe ion current in laser-produced plasma expansion
Department of Physics, Technical “Gh. Asachi” University - Blvd. Mangeron no. 64, Iasi 700029, Romania, EU
2 Laboratoire de Physique des Lasers, Atomes et Molécules (UMR 8523), Université des Sciences et Technologies de Lille - 59655 Villeneuve d'Ascq cedex, France, EU
3 Faculty of Physics, “Al.I.Cuza” University - Blvd. Carol I no. 11, Iasi 700506, Romania, EU
Corresponding author: email@example.com
Accepted: 9 March 2010
Using the Langmuir probe method to investigate the parameters of laser-produced plasma, our experimental results show an oscillatory structure of the recorded transient ion current. The periodic behavior is analyzed for various targets and probe positions and, after extracting the continuous part, it is found to be connected with the ion frequency and the electron-ion collision frequency. We conclude that theories to describe these oscillations may provide new diagnostic techniques of laser-produced plasma.
PACS: 52.50.Jm – Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.) / 52.38.Mf – Laser ablation / 52.70.Ds – Electric and magnetic measurements
© EPLA, 2010
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