نوع مقاله : مقاله فنی
نویسندگان
1 گروه فیزیک اتمی و مولکولی، بخش فیزیک، دانشکده علوم پایه، دانشگاه تربیت مدرس، صندوق پستی: 14115-175، تهران - ایران
2 پژوهشکده پلاسما و گداخت هستهای، پژوهشگاه علوم و فنون هستهای، سازمان انرژی اتمی، صندوق پستی: 51113-14399، تهران- ایران
کلیدواژهها
عنوان مقاله English
نویسندگان English
In this article, the behavior of a short pulse, pre-ionized flashlamp for pumping the laser-induced plasma has been experimentally studied. The total discharged energy is nearly 2 joules to generate 1 microsecond optical pulses. For this means, an especially designed discharge circuit with a single high voltage switch where consists of three trigatron switches in series was implemented. The observations show that the flashlamp doesn’t obey the classical Goncz’s V-I characteristics with a constant under experimental conditions. The flashlamp behavior can be more suitably described with a Freundlich’s equation. Moreover, the parameter is a function of the discharge current with a different behavior on the leading and falling edges of the current pulse. The shortest flashlamp optical pulses were achieved with about 5 microseconds delay time among the pre-ionization and the main discharge of flashlamp.
کلیدواژهها English