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Aceleración de átomos neutros en fuertes campos láser de pulso corto
U Eichmann1, T Nubbemeyer, H Rottke
1Max-Born-Institute, Max-Born-Strasse 2a, 12489 Berlin, Germany. ulli.eichmann@mbi-berlin.de
Nature
|October 30, 2009
Resumen
Los investigadores descubrieron fuerzas cinemáticas extremadamente fuertes en átomos neutros utilizando láseres de pulso corto. La fuerza ponderomotriz sobre los electrones impulsa esto, lo que resulta en magnitudes de aceleración sin precedentes para los átomos neutros en campos externos.
Área de la Ciencia:
- Física atómica y molecular Física atómica y molecular
- Física del láser Física del láser
- Física del plasma es la física del plasma.
Sus antecedentes:
- Las partículas cargadas en campos eléctricos oscilantes experimentan fuerzas ponderomotrices.
- Estas fuerzas son cruciales en fenómenos como las trampas de Paul y la aceleración de partículas basada en láser.
- Anteriormente, las fuerzas similares sobre los átomos neutros en campos de luz se consideraban débiles.
Objetivo del estudio:
- Para investigar y observar fuerzas cinemáticas extremadamente fuertes y no consideradas previamente sobre los átomos neutros.
- Para identificar el mecanismo físico subyacente que impulsa estas fuertes fuerzas.
- Explorar el potencial de nuevas aplicaciones en física fundamental y aplicada.
Principales métodos:
- Utilizando campos láser de pulso corto para interactuar con átomos neutros.
- Analizando las fuerzas cinemáticas y aceleraciones resultantes.
- Identificando el papel de la fuerza ponderomotriz en los electrones.
Principales resultados:
- Observación de fuerzas cinemáticas extremadamente fuertes en átomos neutros en campos láser de pulso corto.
- Identificación de la fuerza ponderomotriz sobre los electrones como el mecanismo de conducción.
- Se logró una aceleración ultrarrosa de los átomos neutros, alcanzando aproximadamente 10-14 veces la gravedad de la Tierra (g).
Conclusiones:
- El estudio demuestra una aceleración récord de los átomos neutros en campos externos.
- Este fenómeno, impulsado por las fuerzas ponderomotrices de los electrones, abre nuevas vías para la investigación.
- Se destaca el potencial para nuevas aplicaciones en física fundamental y aplicada.
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