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Plasma scale length impact onto electron acceleration at intensities above 1018 W/cm2доклад на конференции
- Авторы: Savel’ev A., Tsymbalov I., Shulyapov S., Ivanov K., Krestovskih D., Rusakov A., Bychenkov V., Ksenofontov P., Brantov A., Nedorezov V., Lapik A., Volkov R.
- Международная Конференция (Семинар (workshop)) : Complex Systems of Charged Particles and their Interactions with Electromagnetic Radiation 2016
- Даты проведения конференции: 13-15 апреля 2016
- Дата доклада: 13 апреля 2016
- Тип доклада: Приглашенный
- Докладчик: не указан
- Место проведения: Москва, Russia
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Аннотация доклада:
We search for optimal target conditions for electron acceleration followed by gamma-ray production. We report on experimental and numerical data on relativistic laser plasma interaction with plasma having different density gradients and compositions. Experiments were made at intensities of 3000-5000 PW/cm2 with 50 fs high contrast laser pulses. Plasma scalelength control was achieved using artificial nanosecond pre-pulse. Prominent increase in gamma-yield was observed for optimally designed plasma plumes as compared to the flat surface case. The hugest increase was obtained with specially designed sandwich-like structures irradiated by optimized nanosecond pre-pulse. Numerical simulations with the PIC code Mandor revealed mechanisms responsible for the observed processes.
- Добавил в систему: Савельев-Трофимов Андрей Борисович