Accession Number : ADP007048

Title :   X-Ray Generation by High Irradiance Exawatt-Per-Square Centimeter Subpicosecond Lasers,

Corporate Author : LOS ALAMOS NATIONAL LAB NM

Personal Author(s) : Kyrala, G. A. ; Fulton, R. D. ; Casperson, D. E. ; Wahlin, E. K. ; Jones, L. A.

Report Date : 22 MAY 1992

Pagination or Media Count : 5

Abstract : We have studied the interaction of 290-fsec, 308-nm laser pulses with Aluminum targets at irradiances exceeding ((5 x 10 to the 18th W)/sq. cm.) (5 EW/sq. cm). The x-ray spectrum shows a hot electron component with a characteristic temperature of 30 keV, and a low temperature component of 1 keV. Imaging of the x-rays shows an emission region of few micrometers for the hot component and a larger region for the 1 keV emission. The x-ray brightest lines radiating 0.6% of the incident laser light energy. The spectral luminosity of the L sub alpha line was measured to be (3 x 10 to the 14th W)/sq. cm./eV/sr.

Descriptors :   *ALUMINUM, *X RAY LASERS, *X RAY LASERS, *X RAY SPECTRA, *COHERENT OPTICAL RADIATION, PULSED LASERS, LUMINOSITY, LUMINOSITY, IRRADIATION, COHERENT RADIATION, SHORT WAVELENGTHS, OPTICAL IMAGES, SYMPOSIA.

Subject Categories : Optics
      Electrical and Electronic Equipment
      Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE