Emission Line Spectra from Low-density Laboratory Plasmas

نویسندگان

  • P. Beiersdorfer
  • G. V. Brown
  • J. J. Drake
  • M.-F. Gu
  • S. M. Kahn
  • J. K. Lepson
  • D. A. Liedahl
  • C. W. Mauche
  • D. W. Savin
  • S. B. Utter
چکیده

Estamos realizando mediciones en el laboratorio de las ĺıneas de emisión de iones importantes en la astrof́ısica, en el rango espectral de rayos-X de entre 1 y 400 Å , que cubrirán las misiones espaciales Chandra, XMM, Astro-E y EUVE. Los datos, obtenidos en un ambiente controlado a densidades similares a las de coronas estelares, son usados para verificar la exactitud y completez de códigos de modelaje espectral. Nuestro trabajo incluye la compilación de ĺıneas de emisión de fierro, de capa L entre 6 y 18 Å y de capa M de 50 a 200 Å. Muchas ĺıneas son identificadas por primera vez y se determinan los flujos correspondientes, faltantes en los modelos. Nuestras medidas también permiten determinar la exactitud de los cálculos de excitación de ĺıneas, incluyendo excitación colisional, recombinación dielectrónica y excitación resonante. Estos resultados permiten calibrar casos espećıficos de diagnósticos de cocientes de ĺıneas. Se dan ejemplos de datos obtenidos recientemente.

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تاریخ انتشار 2000