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Full-Text Articles in Physics
Crossed Field Trochoidal Trajectory Devices For Investigating The Reflection Of Slow Electrons From Metallic Surfaces, Stan Lemaster
Crossed Field Trochoidal Trajectory Devices For Investigating The Reflection Of Slow Electrons From Metallic Surfaces, Stan Lemaster
Masters Theses & Specialist Projects
The objective of this study was to build preliminary devices . which could be used to measure electron reflection coefficient values using crossed electric and magnetic fields. The technique for using crossed fields to measure reflection coefficients was developed at Air Force Cambridge Research Laboratories. The reflection coefficient is the ratio of the number of electrons in a reflected beam to the number of electrons in an incident beam striking a surface.
The work described herein was a part of a project authored by AFCRL under contract AF19 (628)-5940; Project 8605 (with Western Kentucky University being the contractor) which was …
Nuclear-Structure Studies Of The Chromium Isotopes: The Cr50(P,P')Cr50 And Cr50(D,P)Cr51 Reactions, Stephen J. Mecca
Nuclear-Structure Studies Of The Chromium Isotopes: The Cr50(P,P')Cr50 And Cr50(D,P)Cr51 Reactions, Stephen J. Mecca
Stephen J. Mecca
The Cr50(p,p’)Cr50 and Cr50(d,p)Cr51 reactions have been studied using 7.5-MeV protons and deuterons from the MIT-ONR electrostatic generator and the MIT multiple-gap spectrograph to analyze reaction protons. Fifteen levels in Cr50 up to an excitation energy of 3.929 MeV and 156 levels in Cr51 up to an excitation energy of 7.931 MeV were observed. The ground-state Q value for the (d,p) reaction was measured as 7.041±0.006 MeV. A zero-range, distorted-wave Born-approximation (DWBA) analysis was used to obtain values for the orbital angular momentum of the transferred neutrons …
Solid State Electrolysis Of Yttria Stablized Zirconia, John Newman
Solid State Electrolysis Of Yttria Stablized Zirconia, John Newman
Masters Theses & Specialist Projects
Zirconium dioxide, or zirconia, is seemingly an ideal refractory oxide, having a high melting point (2680°C), low thermal expansion and also a considerable resistance to most forms of chemical attack. Early researchers soon found that zirconia, in the pure form, was actually of very limited use as a refractory because of sudden and disruptive volume changes accompanying a change in crystal structure which occurs at a temperature of about 1100 o C. It was discovered that this crystal structure change could be suppressed by the addition of one of a number of alkaline earth or rare earth oxides. These additive …