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Control arbitrario de la polarización con un ondulador APPLE-II segmentado

Kento Inaba1, Yoshiyuki Ohtsubo1, Akane Agui1

  • 1NanoTerasu Center, National Institutes for Quantum Science and Technology (QST), Sendai, Miyagi 980-8572, Japan.

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Resumen

Un nuevo ondulador APPLE-II ofrece control flexible de la polarización de rayos X para espectroscopia. Esta tecnología permite una sintonización precisa de la polarización de fotones, avanzando en aplicaciones de rayos X blandos y tenues.

Palabras clave:
ondulador APPLE-IIcontrol de polarizaciónonduladores segmentados

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Área de la Ciencia:

  • Física
  • Ciencia de materiales
  • Espectroscopia

Sus antecedentes:

  • Las fuentes avanzadas de rayos X son cruciales para la espectroscopia.
  • El control de la polarización de fotones mejora el análisis de materiales.
  • Los onduladores existentes tienen limitaciones en la versatilidad de la polarización.

Objetivo del estudio:

  • Desarrollar y evaluar un novedoso ondulador APPLE-II de cuatro segmentos.
  • Lograr un control arbitrario de la polarización en la región de rayos X blandos a tenues.
  • Permitir una versátil espectroscopia de absorción de rayos X en NanoTerasu BL13U.

Principales métodos:

  • Se utilizó un diseño de ondulador APPLE-II de cuatro segmentos.
  • Se emplearon desplazadores de fase electromagnéticos para ajustar la fase de la radiación de sincrotrón.
  • Se investigó el control de la polarización en el rango de energía de 180-3000 eV.

Principales resultados:

  • Se demostró el control arbitrario de la polarización lineal a partir de luz polarizada circularmente.
  • Se generó y controló con éxito radiación polarizada elípticamente.
  • Se lograron versátiles estados de polarización, incluido el control sobre los ángulos de elipticidad.

Conclusiones:

  • El ondulador desarrollado proporciona un control de polarización sin precedentes para la espectroscopia de rayos X.
  • Esta tecnología mejora significativamente las capacidades de las fuentes de luz de sincrotrón.
  • El trabajo futuro incluye la exploración de la generación de tercer armónico para la polarización circular de rayos X tenues.