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in subjects: "Lithium Fluorides"  
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The effect of visible light on Harshaw Model 8801 thermoluminescent dosimeters

Description: It has been known for some time that illumination of lithium fluoride (LiF) thermoluminescent dosimeters, particularly with ultraviolet wavelengths, causes these dosimeters to emit thermoluminescence (TL), similar to that caused by exposure to radiation. However the effect of incandescent light on dosimeters is not well documented. In this study the growth, saturation and spectral dependence of this luminescence is studied for open dosimeter cards illuminated with room incandescent light, and f… more
Date: September 1, 1990
Creator: Sonder, E.; Ahmed, A. B.; McMahan, K. L.; Colwell, D. S. & Smith, P. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Magnetic fusion energy materials technology program, annual progress report for period ending June 30, 1976

Description: Activities in research programs are reported on materials for use in thermonuclear reactor development. Information and data are included on radiation effects on stainless steel 316, nickel-base alloys, molybdenum-base alloys, vanadium alloys, and SAP. Results of compatibility studies involving iron-base alloys and lithium are also included along with research results on magnet development. (JRD)
Date: September 1, 1976
Creator: Scott, J. L. (comp.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Glue Film Thickness Measurements by Spectral Reflectance

Description: Spectral reflectance was used to determine the thickness of thin glue layers in a study of the effect of the glue on radiance and reflectance measurements of shocked-tin substrates attached to lithium fluoride windows. Measurements based on profilometry of the components were found to be inaccurate due to flatness variations and deformation of the tin substrate under pressure during the gluing process. The accuracy of the spectral reflectance measurements were estimated to be ±0.5 μm, which was… more
Date: September 20, 2010
Creator: Marshall, B. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hugoniot and spall data from the laser-driven miniflyer

Description: The laser-driven miniflyer has been developed as a small-sized complement to the propellant or gas-driven gun with which to make material property measurements. Flyer velocities typically range from 0.5 to 1.5 km/s, depending on the energy of the launching laser and the flyer dimensions. The 10--50 {micro}m-thick flyers, 1--3 mm in diameter, and comparably small targets require very little material and are easy to recover for post-experiment analysis. To measure and improve the precision of the… more
Date: September 1, 1995
Creator: Warnes, R. H.; Paisley, D. L. & Tonks, D. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Production of lithium positive ions from LiF thin films on the anode in PBFA II

Description: The production of positive lithium ions using a lithium-fluoride-coated stainless steel anode in the particle beam fusion accelerator PBFA II is considered from both the experimental and theoretical points of view. It is concluded that the mechanism of Li{sup +} ion production is electric field desorption from the tenth-micron-scale crystallites which compose the columnar growth of the LiF thin film. The required electric field is estimated to be of the order of 5 MV/cm. An essential feature of… more
Date: September 1, 1995
Creator: Green, T.A.; Stinnett, R.W. & Gerber, R.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Deformation and Fracture of Polycrystalline Lithium Fluoride

Description: Techniques for forming polycrystalline LiF from the melt and for fabricating test specimens were developed and evaluated using single-crystal LiF as a control. Large -grain polycrystalline specimens tested in fourpoint loading always showed some plastic deformation (0.078 to 0.798%) before fracture, but the plastic flow was sharpiy reduced from that of single crystals. An etch was developed revealing dislocations on all crystallographic faces of LiF. Details of plastic deformation in polycrysta… more
Date: September 14, 1962
Creator: Scott, W. D.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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Energy transfer between thulium and praseodymium ions in solids

Description: New thulium-to-praseodymium upconversion and cross-relaxation energy transfer mechanisms are observed. YLiF{sub 4} has several subsets of dopant ions, which exhibit a variety of transfer efficiencies. Dual-pulse laser excitation of dimers in CsCdBr{sub 3} is used to demonstrate a probable upconversion pathway.
Date: September 1, 1993
Creator: Cockroft, N. J. & Murdoch, K. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

THE HIGH-TEMPERATURE CHEMISTRY OF FISSION-PRODUCT ELEMENTS. Summary Report, August 1, 1962-July 31, 1963

Description: The high-temperature chemistry of oxides of ruthenium, palladium, rhondium, and iridium and chlorides of iridium, osmium, rhodium, and ruthenium is discussed with respect to crystal structure, thermodynannic properties, vaporization, formation, and dissociation. (N.W.R.)
Date: September 1, 1963
Creator: Merten, U & Bell, W E
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Activation Energy for Grain Growth in Bismuth Coatings

Description: The knowledge of both activation energy and diffusion coefficient is needed for a predictive processing of grain size in coatings. However, for metals as Bismuth there is insufficient information available in the literature for these parameters. To determine these values, a method is adopted wherein an examination of the grain size is conducted for coatings deposited isothermally. The exponent for grain growth with time is determined, thereby enabling quantification of the activation energy and… more
Date: September 9, 2005
Creator: Jankowski, Alan Frederic; Hayes, Jeffrey P.; Smith, R. F.; Reed, B. W.; Kumar, M. & Colvin, J. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Electron capture from occupied surface states within the band gap of LiF(100)

Description: Measurements of scattered neutral fractions for Na, K, and Cs multicharged ions grazingly incident on Li(100) as function of projectile velocity suggest that near resonant processes are active in the final neutral formation, involving occupied surface states within the band gap of the alkali halide target. Observed scattered negative fractions for incident 0, F. and B projectiles are consistent with such a scenario as well. A model treatment of the projectile charge fraction velocity dependence… more
Date: September 1, 1996
Creator: Yan, Q. & Meyer, F.W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Energy gain of highly charged ions in front of LiF

Description: We present estimates of the energy gain of highly charged ions approaching a LiF surface, based on a modified classical-over-barrier model for insulators. The analysis includes the energy gain by image acceleration as well as the deceleration due to charge-up of the surface in a staircase sequence. The role of the frequency-dependent dielectric response of LiF is emphasized. The resulting velocity dependent total energy gain is studied in detail and the results are compared with experimental da… more
Date: September 24, 1996
Creator: Haegg, L.; Reinhold, C. O. & Burgdoerfer, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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