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Application of a low energy x-ray spectrometer to analyses of suspended air particulate matter

Description: A semiconductor detector x-ray spectrometer has been constructed for the analysis of elements in air particulate specimens. The excitation radiation is provided, either directly or indirectly, using a low power (40 watts) Ag anode x- ray tube. Less than 100 ng for most of the elements in the range Mg $Yields$ Zr, Pb are easily detected within two 1-minute counting intervals. A calibration technique for light element analysis and an experimental method which compensates for particle size effects… more
Date: September 12, 1975
Creator: Giauque, R. D.; Garrett, R. B.; Goda, L. Y.; Jaklevic, J. M. & Malone, D. F.
Item Type: Refine your search to only Article
open access

Argus target chamber

Description: A target chamber for application in the laser fusion program must satisfy some very basic requirements. (1) Provide a vacuum on the order of 10$sup -6$ torr. (2) Support a microscopically small target in a fixed point in space and verify its location within 5 micrometers. (3) Contain an adjustable beam focusing system capable of delivering a number of laser beams onto the target simultaneously, both in time and space. (4) Provide access for diagnostics to evaluate the results of target irradiat… more
Date: November 12, 1975
Creator: Rienecker, F. Jr.; Glaros, S.S. & Kobierecki, M.
Item Type: Refine your search to only Article
open access

Beam-line cryopump

Description: A cryopumping module using metallic surfaces at liquid helium temperature for condensation of hydrogen and deuterium gas has been constructed. This pump, a prototype of four units which will provide pumping for the Livermore 200 kV test stand, will be used to verify the concept and establish engineering parameters. Upon completion of engineering tests and evaluation the pump will be installed in an operating beam line. The design point pumping capacity is 80,000 liters per second for hydrogen a… more
Date: November 12, 1975
Creator: Duffy, T.J. & Oddon, L.D.
Item Type: Refine your search to only Article
open access

Compound ellipsoidal focusing system for fusion lasers

Description: Isentropic compression of laser fusion targets requires highly uniform illumination over the entire target surface, and near normal incidence. For a two beam laser, this is best achieved using a fast catadioptric system. In designing such a system, the total thickness of refracting material must be minimized, to avoid loss of optical quality through small scale self focusing. Such a system is being fabricated for use with the ARGUS laser. It consists of a pair of nested ellipsoidal reflectors, … more
Date: November 12, 1975
Creator: Glaros, S.S. & Glass, A.J.
Item Type: Refine your search to only Article
open access

Energy storage and power conditioning system for the Shiva laser

Description: An optimal energy delivery system for the world's largest glass laser system has been designed based on computer modeling and operation of laser hardware. Components of the system have been tested on operating lasers at LLL. The Shiva system is now under construction and will be completed in 1977. The energy supply described here will provide cost-effective, reliable power and facilitate the gathering of data in pursuit of controlled thermonuclear reactions. (auth)
Date: November 12, 1975
Creator: Allen, G. R.; Gagnon, W. L.; Rupert, P. R. & Trenholme, J. B.
Item Type: Refine your search to only Article
open access

Far infrared spectroscopy of solids. I. Impurity states in Al$sub 2$O$sub 3$. II. Electron-hole droplets in Ge

Description: Far infrared Fourier transform spectroscopy was used to study the low lying vibronic states of Mn$sup 3+$ in Al$sub 2$O$sub 3$ and the plasma absorption of electron-hole droplets in Ge. The transmission of Mn-doped samples of Al$sub 2$O$sub 3$ was measured in the frequency range from 3 to 30 cm$sup -1$ in applied magnetic fields up to 50 kG. Absorption lines were observed due to both ground and excited state transitions. Polarization measurements established that these absorption lines were due… more
Date: September 12, 1975
Creator: Aurbauch, R.L.
Item Type: Refine your search to only Thesis or Dissertation
open access

Intense, pulsed, ion-diode sources and their application to mirror machines

Description: Startup conditions for future mirror fusion experiments require a rapidly formed target plasma of approximately 0.5 coulomb of ions with energy of 50 to 100 keV. Theory suggests that very intense ion-flux emission satisfying these requirements can be extracted from a pulsed ion diode. Developing such sources would be an ideal CTR application of the high-power, single-shot capability of pulsed power technology. Recent experimental results are reviewed in which approximately 2 kA/cm/sup 2/ of D/s… more
Date: November 12, 1975
Creator: Prono, D. S.; Shearer, J. W. & Briggs, R. J.
Item Type: Refine your search to only Article
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