Joint wakefield acceleration by laser pulse and by self-injected electron bunches

• Дата: 2016
• Автори: Maslov, V.I., Svystun, O.M., Onishchenko, I.N., Yegorov, A.M.
• Формат: Стаття
• Мова: English
• Опубліковано: Національний науковий центр «Харківський фізико-технічний інститут» НАН України 2016
• Назва видання: Вопросы атомной науки и техники
• Теми: Plasma electronics
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/115433
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Joint wakefield acceleration by laser pulse and by self-injected electron bunches / V.I. Maslov, O.M. Svystun, I.N. Onishchenko, A.M. Yegorov // Вопросы атомной науки и техники. — 2016. — № 6. — С. 144-147. — Бібліогр.: 8 назв. — англ.

The multi-bunches self-injection, observed in laser-plasma accelerators in the bubble regime, may be challenging. Namely, it affects the energy gain of electrons accelerated by laser wakefield. With time the first witness bunches turn into drivers and contribute to acceleration of the last witness bunches. Thus, the combined joint acceleration occurs of last self-injected bunches by laser pulse and by first self-injected bunches which have become drivers. It is shown that the charges of originally self-injected bunches equal more pC, the charges of additionally self-injected and accelerated bunches with the greatest energy are much less. It is also shown that the energies of additionally selfinjected and accelerated bunches are more than the energies of originally self-injected bunches which have become drivers. It is demonstrated that originally self-injected bunch in the second wake bubble in the case of injection of a single laser pulse and in the third wake bubble in the case of injection of short chain of laser pulses after deceleration is self-cleaned as a result of radial defocusing by transversal fields.