TY - JOUR
T1 - Electron density measurement in gas discharge plasmas by optical and acoustic methods
AU - Biagioni, A.
AU - Anania, M. P.
AU - Bellaveglia, M.
AU - Chiadroni, E.
AU - Cianchi, A.
AU - Di Giovenale, D.
AU - Di Pirro, G.
AU - Ferrario, M.
AU - Filippi, F.
AU - Mostacci, A.
AU - Pompili, R.
AU - Shpakov, V.
AU - Vaccarezza, C.
AU - Villa, F.
AU - Zigler, A.
N1 - Publisher Copyright:
© 2016 IOP Publishing Ltd and Sissa Medialab srl.
PY - 2016/8/1
Y1 - 2016/8/1
N2 - Plasma density represents a very important parameter for both laser wakefield and plasma wakefield acceleration, which use a gas-filled capillary plasma source. Several techniques can be used to measure the plasma density within a capillary discharge, which are mainly based on optical diagnostic methods, as for example the well-known spectroscopic method using the Stark broadening effect. In this work, we introduce a preliminary study on an alternative way to detect the plasma density, based on the shock waves produced by gas discharge in a capillary. Firstly, the measurements of the acoustic spectral content relative to the laser-induced plasmas by a solid target allowed us to understand the main properties of the acoustic waves produced during this kind of plasma generation; afterwards, we have extended such acoustic technique to the capillary plasma source in order to calibrate it by comparison with the stark broadening method.
AB - Plasma density represents a very important parameter for both laser wakefield and plasma wakefield acceleration, which use a gas-filled capillary plasma source. Several techniques can be used to measure the plasma density within a capillary discharge, which are mainly based on optical diagnostic methods, as for example the well-known spectroscopic method using the Stark broadening effect. In this work, we introduce a preliminary study on an alternative way to detect the plasma density, based on the shock waves produced by gas discharge in a capillary. Firstly, the measurements of the acoustic spectral content relative to the laser-induced plasmas by a solid target allowed us to understand the main properties of the acoustic waves produced during this kind of plasma generation; afterwards, we have extended such acoustic technique to the capillary plasma source in order to calibrate it by comparison with the stark broadening method.
KW - Plasma diagnostics - interferometry, spectroscopy and imaging
KW - Plasma generation (laser-produced, RF, x ray-produced)
UR - http://www.scopus.com/inward/record.url?scp=84985898392&partnerID=8YFLogxK
U2 - 10.1088/1748-0221/11/08/C08003
DO - 10.1088/1748-0221/11/08/C08003
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AN - SCOPUS:84985898392
SN - 1748-0221
VL - 11
JO - Journal of Instrumentation
JF - Journal of Instrumentation
IS - 8
M1 - C08003
ER -