Abstract
The measurement of the plasma density is of crucial importance in laser-plasma accelerators. We measured the spatial and the temporal plasma/gas densities in a capillary gas-cell by using the interferometric and the Raman scattering methods. By using transverse interferometry, we were able to measure directly the spatial distribution of the electron density between the entrance and the location of gas injection in the capillary, and we compared the result with that from a computational fluid dynamics (CFD) simulation. By using longitudinal interferometry along the capillary’s axis, we were able to obtain the temporal evolution of the density of hydrogen gas. Furthermore, we used the stimulated Raman forward scattering method with a terawatt-level high-power laser beam for real-time measurement of the localized electron density inside the capillary. We found that the interferometry and the Raman scattering methods gave consistent results for the plasma density.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
W. P. Leemans, A. J. Gonsalves, H.-S. Mao, K. Nakamura, C. Benedetti, C. B. Schroeder, Cs. Tóth, J. Daniels, D. E. Mittelberger, S. S. Bulanov, J.-L. Vay, C. G. R. Geddes and E. Esarey, Phys. Rev. Lett. 113, 245002 (2014).
M. Fuchs, R. Weingartner, A. Popp, Z. Major, S. Becker, J. Osterhoff, I. Cortrie, B. Zeitler, R. Hörlein, G. D. Tsakiris, U. Schramm, T. P. Rowlands-Rees, S. M. Hooker, D. Habs, F. Krausz, S. Karsch and F. Grüner, Nat. Phys. 5, 826 (2009).
S. Kneip, C. McGuffey, J. L. Martins, S. F. Martins, C. Bellei, V. Chvykov, F. Dollar, R. Fonseca, C. Huntington, G. Kalintchenko, A. Maksimchuk, S. P. D. Mangles, T. Matsuoka, S. R. Nagel, C. A. J. Palmer, J. Schreiber, K. T. Phuoc, A. G. R. Thomas, V. Yanovsky, L. O. Silva, K. Krushelnick and Z. Najmudin, Nat. Phys. 6, 980 (2010).
J. Osterhoff, A. Popp, Z. Major, B. Marx, T. P. Rowlands-Rees, M. Fuchs, M. Geissler, R. Hörlein, B. Hidding, S. Becker, E. A. Peralta, U. Schramm, F. Grüner, D. Habs, F. Krausz, S. M. Hooker and S. Karsch, Phys. Rev. Lett. 101, 085002 (2008).
M. Hansson, L. Senje, A. Persson, O. Lundh, C.-G. Wahlström, F. G. Desforges, J. Ju, T. L. Audet, B. Cros, S. Dobosz Dufrénoy and P. Monot, Phys. Rev. ST Accel. Beams 17, 031303 (2014).
I. Nam, M. Kim, T. H. Lee, S. W. Lee and H. Suk, Curr. Appl. Phys. 15, 468 (2015).
A. J. Gonsalves, T. P. Rowlands-Rees, B. H. P. Broks, J. J. A. M. van der Mullen and S. M. Hooker, Phys. Rev. Lett. 98, 025002 (2007).
J. Ju and B. Cros, J. Appl. Phys. 112, 113102 (2012).
C. Ciocarlan, S. M. Wiggins, M. R. Islam, B. Ersfeld, S. Abuazoum, R. Wilson, C. Aniculaesei, G. H. Welsh, G. Vieux and D. A. Jaroszynski, Phys. Plasmas 20, 093108 (2013).
W. Lu, M. Tzoufras, C. Joshi, F. S. Tsung, W. B. Mori, J. Vieira, R. A. Fonseca and L. O. Silva, Phys. Rev. ST Accel. Beams 10, 061301 (2007).
M. D. Perry, C. Darrow, C. Coverdale and J. K. Crane, Opt. Lett. 17, 523 (1992).
W. Jones and B. Launder, Int. J. Heat Mass Transfer 15, 301 (1972).
C. Kim, G. H. Kim, J. U. Kim, I. S. Ko and H. Suk, Rev. Sci. Instrum. 75, 2865 (2004).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Nam, I., Kim, M., Lee, Sw. et al. Spatial and temporal measurements of plasma/gas densities in a capillary gas-cell for laser-plasma accelerators. Journal of the Korean Physical Society 69, 957–961 (2016). https://doi.org/10.3938/jkps.69.957
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.3938/jkps.69.957