Hot electron refluxing in the short intense laser pulse interactions with solid targets and its influence on K-α radiation

• Autorzy: Horný W. , Klimo O.

Identyfikatory

DOI

10.1515/nuka-2015-0045

• Konferencja: Kudowa Summer School „Towards Fusion Energy” (12th ; 9-13.06.2014 ; Kudowa Zdrój, Poland)
• Języki publikacji: EN

Abstrakty

EN

Fast electrons created as a result of the laser beam interaction with a solid target penetrate into the target material and initialize processes leading to the generation of the characteristic X-ray K-α radiation. Due to the strong electric field induced at the rear side of a thin target the transmitted electrons are redirected back into the target. These refl uxing electrons increase the K-α radiation yield, as well as the duration of the X-ray pulse and the size of the radiation emitting area. A model describing the electron refl uxing was verifi ed via particle- -in-cell simulations for non-relativistic electron energies. Using this model it was confi rmed that the effect of the electron refluxing on the generated X-ray radiation depends on the target thickness and the target material. A considarable increase of the number of the emitted K-α photons is observed especially for thin targets made of low-Z materials, and for higher hot electron temperatures.

Słowa kluczowe

EN

electron recirculation; electron refluxing; K-α radiation; laser–plasma interactions; particle-in-cell simulation

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2015
• Tom: Vol. 60, No. 2
• Strony: 233--237
• Opis fizyczny: Bibliogr. 11 poz., rys.

Twórcy

autor

Horný W.

• Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, 115 19 Prague 1, Czech Republic and Institute of Plasma Physics of the Czech Academy of Sciences, Za Slovankou 1782/3, 182 00 Prague 8, Czech Republic, Tel.: [phone], Fax: [phone]

autor

Klimo O.

• Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, 115 19 Prague 1, Czech Republic

Bibliografia

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