Now showing items 1-10 of 177
Ion beam modification of metals: Compositional and microstructural changes
(Elsevier, 1989)
Ion implantation has become a highly developed tool for modifying the structure and properties of metals and alloys. In addition to direct implantation, a variety of other ion beam techniques such as ion beam mixing, ion ...
On the Asymptotic Stability of Reactors with Arbitrary Feedback
(The American Institute of Physics, 1970-01)
A theorem for the boundedness and asymptotic stability of a point reactor with an arbitrary feedback is stated and proved. The criteria obtained are shown to be essentially the same as those given by Akcasu and Dolfes. The ...
Modified slater integrals for an ion in a solid
(Elsevier, 1967-05-22)
Expressions for the Slater integrals are derived for an ion of the first transition series when placed in a solid. Reasonable agreement is obtained with experimental data for Co++ in spinel.
A discrete ordinates solution of the Fokker-Planck equation characterizing charged particle transport
(Elsevier, 1980-11-01)
A formalism for obtaining a discrete ordinates solution of the time and space-dependent Fokker-Planck equation governing the transport of charged particles in multispecie plasmas is developed. In the absence of macroscopic ...
On the dynamic structure factor, S(q,[omega]), of polymers in dilute solution
(Elsevier, 1981-08)
In principle, interpretation of dynamic scattering experiments requires theoretical calculation of either intermediate scattering functions S(q,t) or dynamic structure factors S(q,[omega]). Although dynamic scattering ...
Efficiency and angular resolution calculations for a prototype multiple Compton scatter camera
(Elsevier, 1994-06-15)
Monte Carlo simulations were performed to optimize the layer thickness of a Compton camera which utilizes multiple Compton scatterings. The optimum layer thickness was found to be less than 0.5 mm for 150 keV, 2 mm for 511 ...
Digital techniques for real-time pulse shaping in radiation measurements
(Elsevier, 1994-12-30)
Recursive algorithms for real-time digital pulse shaping in pulse height measurements have been developed. The differentiated signal from the preamplifier (exponential pulse) is amplified and then digitized. Digital data ...
Effects of random fluctuations in external magnetic field on plasma conductivity
(The American Institute of Physics, 1983-02)
The electrical conductivity for a weakly ionized magnetized plasma in which the external magnetic field is subject to random fluctuations is calculated using a stochastic differential equation approach. Calculation of the ...
Temperature dependence of deformation-assisted crystallization in amorphous Fe78B13Si9Fe78B13Si9
(The American Institute of Physics, 1998-09-28)
Low-energy ball milling of amorphous Fe78B13Si9Fe78B13Si9 has been performed at temperatures between 25 and 250 °C. Primary crystallization is observed after milling at elevated temperatures, but not after annealing at the ...