Illuminating the degradation of lithium fluoride mirror coatings in humid environments

2020 ◽  
Author(s):  
Devin M. Lewis ◽  
Caleb M. Plewe ◽  
Alexandra K. Gallion ◽  
Joshua J. Vawdrey ◽  
R. Steven Turley ◽  
...  
Keyword(s):  
Lithium Fluoride

Storing energy in lithium fluoride crystals irradiated with femtosecond laser pulses

2016 ◽  
Vol 80 (1) ◽  
pp. 85-88 ◽  
Author(s):  
V. P. Dresvyanskiy ◽  
M. A. Moiseeva ◽  
A. V. Kuznetsov ◽  
D. S. Glazunov ◽  
B. Chadraa ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Lithium Fluoride ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Fluoride Crystals

scholarly journals Characterization of Ectophosphatase Activities in Trypanosomatid Parasites of Plants

2000 ◽  
Vol 90 (9) ◽  
pp. 1032-1038 ◽  
Author(s):  
P. M. L. Dutra ◽  
C. O. Rodrigues ◽  
A. Romeiro ◽  
L. A. M. Grillo ◽  
F. A. Dias ◽  
...  
Keyword(s):  
Lithium Fluoride ◽  
External Surface ◽  
Sodium Orthovanadate ◽  
Intact Cells ◽  
Phosphatase Activities ◽  
Cerium Phosphate ◽  
Cytochemical Analysis ◽  
Trypanosomatid Parasites ◽  
Phosphate Deposits

In the present work ectophosphatase activities of three trypanosomatid parasites of plants were characterized using intact cells. Phytomonas françai, Phytomonas mcgheei, and Herpetomonas sp. hydrolyzed p-nitro-phenylphosphate at a rate of 5.40, 7.28, and 25.58 nmol Pi/mg of protein per min, respectively. Experiments using classical inhibitors of acid phosphatases such as sodium orthovanadate (NaVO3) and sodium fluoride (NaF) showed a decrease in phosphatase activities. Lithium fluoride (LiF) and aluminum chloride (AlCl3) were also used. Although AlCl3 had no effect, LiF was able to promote a decrease in the phosphatase activities. Interestingly, the inhibition caused by LiF was enhanced by the addition of AlCl3 during the reaction, probably due to the formation of fluoroaluminate complexes. This effect was confirmed by cytochemical analysis. In this assay, electron-dense cerium phosphate deposits were visualized on the external surface of the three parasites.

The Mechanism of Ablation of Corneal Tissue by the Neodymium Doped Yttrium-Lithium-Fluoride Picosecond Laser

Cornea ◽  
1994 ◽  
Vol 13 (6) ◽  
pp. 479???486
Author(s):  
Daniel B. Brown ◽  
William J. O??Brien ◽  
Richard O. Schultz
Keyword(s):  
Lithium Fluoride ◽  
Picosecond Laser ◽  
Corneal Tissue ◽  
Yttrium Lithium Fluoride

High-angle Kikuchi patterns

1954 ◽  
Vol 221 (1145) ◽  
pp. 224-242 ◽  
Keyword(s):  
Lithium Fluoride ◽  
High Efficiency ◽  
Cylindrical Specimen ◽  
Angle Of Incidence ◽  
High Angle ◽  
Lead Sulphide ◽  
Marked Contrast ◽  
Experimental Conditions ◽  
Low Intensity ◽  
Glancing Angle

A cylindrical specimen chamber and camera have been used to study the high-angle Kikuchi patterns obtained by reflexion of electrons, of energy 6 to 50 keV, from the cleavage surfaces of crystals with the sodium chloride structure. Angles of scattering ranging from 0 to 164° were covered. The relative intensity of the pattern at different scattering angles was measured using a photographic technique. The intensity distribution was found to become less steep as the energy of the incident electrons decreased. In photographs taken with a large value of the glancing angle of incidence, defect bands were found, starting near the shadow edge of the pattern; these changed to excess bands at higher angles of scattering. The most striking feature of the results is the remarkable intensity and clarity at the highest scattering angles of the pattern produced by crystals such as lead sulphide and potassium iodide, the constituents of which have a relatively high elastic scattering cross-section. In marked contrast, a relatively low intensity and low clarity was found at these angles for lithium fluoride under the same experimental conditions. An investigation of the width of Kikuchi bands, visible over the whole available angular range, showed that the electrons forming these bands had the same energy as that of the incident electrons within the experimental error of 10%. A possible mechanism is discussed by means of which electrons can be diffused through large angles with high efficiency, relative to small angles, and with relatively little loss of energy.

F L V a + a and F L F color centers in lithium fluoride crystals

2001 ◽  
Vol 90 (4) ◽  
pp. 552-554 ◽  
Author(s):  
L. I. Shchepina ◽  
S. S. Kolesnikov ◽  
V. M. Kalikhman ◽  
I. V. Teryaeva
Keyword(s):  
Lithium Fluoride ◽  
Color Centers ◽  
Fluoride Crystals

Optical Dielectric Function of the Lithium-Fluoride Crystal

1973 ◽  
Vol 30 (26) ◽  
pp. 1313-1315 ◽  
Author(s):  
W. Paul Menzel ◽  
Chun C. Lin ◽  
Doyle F. Fouquet ◽  
Earl E. Lafon ◽  
Roy C. Chaney
Keyword(s):  
Dielectric Function ◽  
Lithium Fluoride ◽  
Fluoride Crystal ◽  
Optical Dielectric
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