Time resolved x-ray pinhole photography of compressed laser fusion targets

Conference · Mon Jul 26 04:00:00 EDT 1976

OSTI ID:7350357

Attwood, D T

Use of the Livermore x-ray streak camera to temporally record x-ray pinhole images of laser compressed targets is described. Use is made of specially fabricated composite x-ray pinholes which are near diffraction limited for 6 A x-rays, but easily aligned with a He--Ne laser of 6328 A wavelength. With a 6 ..mu..m x-ray pinhole, the overall system can be aligned to 5 ..mu..m accuracy and provides implosion characteristics with space--time resolutions of approximately 6 ..mu..m and 15 psec. Acceptable criteria for pinhole alignment, requisite x-ray flux, and filter characteristics are discussed. Implosion characteristics are presented from our present experiments with 68 ..mu..m diameter glass microshell targets and 0.45 terawatt, 70 psec Nd laser pulses. Final implosion velocities in excess of 3 x 10/sup 7/ cm/sec are evident.

• Research Organization: California Univ., Livermore (USA). Lawrence Livermore Lab.
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 7350357
• Report Number(s): UCRL-77743; CONF-760828-8
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101 -- Fusion Energy-- Plasma Research-- Confinement
Heating
& Production
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
FUELS
HEATING
IMPLOSIONS
LASER IMPLOSIONS
LASER-RADIATION HEATING
MICROSPHERES
PHOTOGRAPHY
PLASMA DIAGNOSTICS
PLASMA HEATING
SPECTRA
STREAK PHOTOGRAPHY
THERMONUCLEAR FUELS
X-RAY SPECTRA