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Full-Text Articles in Physics
Electrical Conductivity Measurements Of Lithium-Ammonia Solutions, Mariana Constantin Barbu
Electrical Conductivity Measurements Of Lithium-Ammonia Solutions, Mariana Constantin Barbu
Masters Theses
The topic covered in this thesis is the study of electronic interactions for liquid metal-ammonia solutions, lithium-ammonia solutions in particular. To obtain a theoretical understanding of so-called correlated electron systems.
The work focuses on sample creation and measurement of electrical conductivity of lithium-ammonia solutions varying with temperature for different concentrations. We have taken measurements in liquid lithium-ammonia mixtures using four-wire method to minimize the contact resistance. We have shown how it is possible to carry out accurate measurements of the electrical conductivity in these systems with the four wire measurements.
Optical Solitons In A Three-State Medium, Talal Ghannam
Optical Solitons In A Three-State Medium, Talal Ghannam
Masters Theses
When a beam of light propagates within a typical medium, absorption is a common phenomenon. This happens when the frequency of the light is close to a resonant frequency of the atoms composing the medium. But in the past few decades, it has been shown that in certain circumstances, carefully chosen pulse shapes are able to propagate without significant absorption even when the frequency of the light is close to an atomic resonant frequency. It was called Self Induced Transparency (SIT).
This phenomenon was intensively studied in the two-state systems. On the other hand, the three-state systems seems not to …