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Convenient method for the direct measurement of uranium in soil samples using high-resolution Ge(Li) gamma-ray spectroscopy
None
Date:
July 26, 1974
Creator:
Coles, D. G.; Meadows, J. W. T. & Lindeken, C. L.
System:
The UNT Digital Library
Advanced concepts in fusion--fission hybrid reactors
None
Date:
July 26, 1974
Creator:
Maniscalco, J. A. & Wood, L. L.
System:
The UNT Digital Library
Time resolved x-ray pinhole photography of compressed laser fusion targets
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.
Date:
July 26, 1976
Creator:
Attwood, D. T.
System:
The UNT Digital Library