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Entrapment of 10–160‐keV xenon implanted under UHV conditions in polycrystalline aluminum has been investigated by Rutherford backscattering. The saturation xenon distributions were found to be strongly affected by radiation‐enhanced outdiffusion. Different from silicon the loss of xenon...
Preliminary experimental results are reported which demonstrate the application of photoacoustic spectroscopy to the measurement of excited‐state absorption spectra with nanosecond time resolution.
The recombination of KrF∗+ R + R → R KrF∗+ R ( R =Ar, Kr) has been modelled. The rate constants calculated by using the classical phase‐space theory are k r (Ar) =9×10 −32 cm 6 /sec and k r (Kr) =5×10 −31 cm 6 /sec.
Multiple liquid phase epitaxy of In 1− x Ga x P 1− z As z ‐InP double heterojunctions, from a single set of In‐rich melts, is demonstrated, and is shown to be a useful technique for the study of the problem of lattice matching at heterojunction interfaces and for growing large numbers of...
We have observed two new emission features in electron‐beam‐excited mixtures of molecular fluorine with either neon or helium. One feature is a continuum centered at 1080 Å which we attribute to NeF∗. The other emission feature is a band system extending from 1500–1600 Å which we...
Epitaxial growth over chemically etched channels is used to fabricate inverted‐ridge‐waveguide (IRW) lasers with current and lateral optical confinement; the former is provided by a two‐step LPE process which results in a p ‐ n ‐ p ‐ n structure in regions away from the channel, and...
Calculations have been carried out for the photoionization cross sections of excited states of atomic argon and krypton, relevant to the KrF laser. At λ=2486 Å, it is found that photoabsorption due to the 3 P 0,2 metastable states is relatively unimportant, while the cross sections for the...
By combination of a liquid‐crystal light valve with a simple additional device, a great brightness intensification of the displayed digits is achievable solely by efficient use of ambient light. In a plastic plate, doped with fluorescent molecules, ambient light is collected, guided, and...
The optical extraction efficiencies and temporal characteristics of a pulsed optically cascaded SF 6 +D 2 chemical laser are presented. It is shown that the directly coupled cascade P 3 (7) → P 2 (8) → P 1 (9) yields approximately 53% of the total multiline energy, while the rotationally...
The growth of the pyroelectric coefficient p ( T ) of 6‐μm films of polyvinylidene fluoride during poling with a field of 100 MV m −1 was measured for the poling temperatures T p =100, 80, 60, 40, and 20 °C. Decreasing T p greatly reduced the growth rate of p ( T ), but not the value of p (...
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