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Dispositivos de plasma para guiar y colimar una alta densidad de electrones MeV
R Kodama1, Y Sentoku, Z L Chen
1Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita Osaka 565-0871, Japan. ryo@ile.osaka-u.ac.jp
Nature
|December 24, 2004
Resumen
Los investigadores desarrollaron nuevos dispositivos de plasma para controlar intensos rayos de partículas energéticas pulsadas intensas. Estos dispositivos aumentan significativamente la densidad de energía de los electrones, avanzando en las aplicaciones de astrofísica de laboratorio y ciencias nucleares.
Área de la Ciencia:
- Laboratorio de astrofísica en el laboratorio.
- Ciencia nuclear de alta densidad de alta densidad.
- Aceleración de partículas impulsada por láser.
Sus antecedentes:
- Los láseres ultra intensos permiten estudios en astrofísica de laboratorio y ciencia nuclear, incluida la fusión láser.
- Las interacciones láser-materia generan partículas cargadas de alta energía (por ejemplo, electrones MeV) con altas densidades de corriente.
- La divergencia del haz de partículas limita la densidad de corriente a distancias de la fuente, lo que dificulta las aplicaciones.
Objetivo del estudio:
- Desarrollar dispositivos para dirigir rayos de partículas energéticas intensos e pulsados.
- Para aumentar la densidad de energía de los electrones MeV generados en las interacciones láser-materia.
- Para permitir aplicaciones revolucionarias en la física de alta densidad de energía.
Principales métodos:
- Utilizó dispositivos de alta conductividad compuestos de plasmas transitorios.
- Empleó una fibra de plasma creada en un blanco de cono hueco.
- Electrones MeV guiados y colimados, análogos a las fibras ópticas y los colimadores.
Principales resultados:
- Se logró un aumento de más de diez veces en la densidad de energía de los electrones MeV.
- Se ha demostrado una guía y colimación efectivas de haces de electrones utilizando estructuras de plasma.
- Superó las limitaciones impuestas por la divergencia del haz de partículas.
Conclusiones:
- Los dispositivos de plasma transitorio pueden mejorar significativamente la densidad de energía de los electrones MeV generados por láser.
- Las fibras de plasma ofrecen un método novedoso para controlar y enfocar haces de partículas cargadas energéticamente.
- Estos avances son prometedores para aplicaciones en la física de alta densidad de energía y la óptica de partículas cargadas.
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