https://doi.org/10.1140/epjd/e2009-00317-0
The spatial distribution of argon clusters in gas jet*
School of Nuclear Science and Technology, Sichuan University, 610064 Chengdu, P.R. China
Corresponding author: ycw@scu.edu.cn
Received:
31
May
2009
Revised:
10
July
2009
Published online:
22
December
2009
The spatial distribution of argon clusters in gas jet is tested using the Rayleigh scattering method. A pulsed laser is used to acquire the whole evolution of the cluster inside one event. The measured results at a fixed axial position show that the argon clusters grow in less than one millisecond after the nozzle is opened and the cluster size keeps constant during the whole open period of 20 ms. Further results show that the scattering signal along the radial direction is almost Gaussian-distributed and the full width half maximum (FWHM) increases almost linearly when the distance from nozzle increases. The scattering signal along the axial direction is Landau-distributed and the area near the nozzle is most effective for laser cluster interaction.
PACS: 36.40.-c – Atomic and molecular clusters / 52.40.Mj – Particle beam interactions in plasmas / 52.50.Jm – Plasma production and heating by laser beams
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2009
