Skip to main content Accessibility help
×
Home
Hostname: page-component-55597f9d44-mm7gn Total loading time: 0.195 Render date: 2022-08-16T16:45:03.977Z Has data issue: true Feature Flags: { "shouldUseShareProductTool": true, "shouldUseHypothesis": true, "isUnsiloEnabled": true, "useRatesEcommerce": false, "useNewApi": true } hasContentIssue true

Ion focusing effect of electron cloud produced by laser-plasma interaction

Published online by Cambridge University Press:  06 March 2006

SHUJI MIYAZAKI
Affiliation:
Department of Material Science and Engineering, Utsunomiya University, Tochigi, Japan
NOBUYASU OKAZAKI
Affiliation:
Department of Electrical and Electronic Engineering, Utsunomiya University, Tochigi, Japan
RYO SONOBE
Affiliation:
Department of Electrical and Electronic Engineering, Utsunomiya University, Tochigi, Japan
QING KONG
Affiliation:
Institute of Modern Physics, Fudan University, Shanghai, China
SHIGEO KAWATA
Affiliation:
Department of Electrical and Electronic Engineering, Utsunomiya University, Tochigi, Japan
A.A. ANDREEV
Affiliation:
Institute for Laser Physics, St Petersburg, Russia
JIRI LIMPOUCH
Affiliation:
Institute of Physics, Czech Technical University Academy of Sciences of the Czech Republic, Praha, Czech Republic

Abstract

We propose a focusing mechanism of high-energy ions by an electron cloud produced by a laser interaction with slab plasma. In our 2.5-dimensional (2.5D) particle-in-cell simulations, the laser intensity is 2 × 1020 W/cm2, the laser wavelength λ is 1.053 μm, and the laser spot size is 2.5λ. When the high intensity laser irradiates slab plasma, electrons are accelerated, oscillate around the plasma and produce the electron cloud locally at the sides of the plasma. Because the electrons are localized transversely, a static electric potential is formed to focus ions and at the same time the ions are accelerated longitudinally. Though the longitudinal ion acceleration has been studied well, the ion focusing effect is reported for the first time in this paper. In our calculations, the maximum energy and intensity of the protons are 8.61 MeV and 1.89 × 1017 W/cm2, and the diameter of the proton bunch accelerated are focused to 71.2% of its initial size.

Type
Research Article
Copyright
© 2006 Cambridge University Press

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Allen, M., Sentoku, Y., Audebert, P., Blazevic, A., Cowan, T., Fuchs, J., Gauthier, J.C., Geissel, M., Hegelich, M., Karsch, S., Morese, E., Patel, P.K. & Roth, M. (2003). Proton spectra from ultraintense laser-plasma interaction with thin foils: Experiments, theory, and simulation. Phys. Plasmas 10, 32833289.Google Scholar
Chen, H. & Wilks, S.C. (2005). Evidence of enhanced effective hot electron temperatures in ultraintense laser-solid interactions due to reflexing. Laser Part. Beams 23, 411416Google Scholar
Hafizi, B., Esarey, E. & Sprangle, P. (1997). Laser-driven acceleration with Bessel beams. Phys. Rev. E 55, 35393545.Google Scholar
Kawata, S., Maruyama, T., Watanabe, H. & Takahashi, I. (1991). Inverse-bremsstrahlung electron acceleration. Phys. Rev. Lett. 66, 20722075.Google Scholar
Kawata, S., Kong, Q., Miyazaki, S., Miyauchi, K., Sonobe, R., Sakai, K., Nakajima, K., Masuda, S., Ho, Y.K., Miyanaga, N., Limpouch, J. & Andreev, A.A. (2005). Electron bunch acceleration and trapping by ponderomotive force of an intense short-pulse laser. Laser Part. Beams 23, 6167.Google Scholar
Kong, Q., Miyazaki, S., Kawata, S., Miyauchi, K., Nakajima, K., Masuda, S., Miyanaga, N. & Ho, Y.K. (2003). Electron bunch acceleration and trapping by the ponderomotive force of an intense short-pulse laser. Phys. Plasmas 10, 46054678.Google Scholar
Lebo, I.G., Demchenko, N.N., Iskakov, A.B., Limpouch, J., Rozanov, V.B. & Tishkin, V.F. (2004). Simulation of high-intensity laser-plasma interactions by use of the 2D Lagrangian code “ATLANT-HE”. Laser Part. Beams 22, 267273.Google Scholar
Limpouch, J., Klimo, O., Bina, V. & Kawata, S. (2004). Numerical studies on the ultrashort pulse K-α emission sources based on femtosecond laser-target interactions. Laser Part. Beams 22, 147156.Google Scholar
Malka, G. & Miquel, J.L. (1997). experimental observation of electrons accelerated in vacuum to relativistic energies by a high-intensity laser. Phys. Rev. Lett. 78, 33143317.Google Scholar
Mourou, G., Barty, C.P.J. & Perry, M.D. (1998). Ultrahigh-intensity lasers: Physics of the extreme on a tabletop. Phys. Today 51, 2228.Google Scholar
Nakamura, T. & Kawata, S. (2003). Origin of protons accelerated by an intense laser and the dependence of their energy on the plasma density. Phys. Rev. E 67, 026403.Google Scholar
Passoni, M. & Lontano, M. (2004). One-dimensional model of the electrostatic ion acceleration in the ultraintense laser-solid interaction. Laser Part. Beams 22, 163169.Google Scholar
Pommiers, L. & Lefebvre, E. (2003). Simulation of energetic proton emission in laser-plasma interaction. Laser Part. Beams 21, 573581.Google Scholar
Ramirez, J., Ramis, R. & Sanz. J. (2004). One-dimensional model for a laser-ablated slab under acceleration. Laser Part. Beams 22, 183188.Google Scholar
Shorokhov, O. & Pukhov, A. (2004). Ion acceleration in overdense plasma by short laser pulse. Laser Part. Beams 22, 175181.Google Scholar
Strickland, D. & Mourou, G. (1985). Compression of amplified chirped optical pulses. Opt. Commun. 56, 219221.Google Scholar
Wilks, S.C., Langdon, T.E., Roth, M., Singh, M., Hatchett, S., Key, M.H., Pennington, D., Mackinnon, A. & Snavely. R.A. (2001). Energetic proton generation in ultra-intense laser-solid interactions. Phys. Plasmas 8, 542549.Google Scholar

Save article to Kindle

To save this article to your Kindle, first ensure coreplatform@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.

Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

Ion focusing effect of electron cloud produced by laser-plasma interaction
Available formats
×

Save article to Dropbox

To save this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you used this feature, you will be asked to authorise Cambridge Core to connect with your Dropbox account. Find out more about saving content to Dropbox.

Ion focusing effect of electron cloud produced by laser-plasma interaction
Available formats
×

Save article to Google Drive

To save this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you used this feature, you will be asked to authorise Cambridge Core to connect with your Google Drive account. Find out more about saving content to Google Drive.

Ion focusing effect of electron cloud produced by laser-plasma interaction
Available formats
×
×

Reply to: Submit a response

Please enter your response.

Your details

Please enter a valid email address.

Conflicting interests

Do you have any conflicting interests? *