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| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
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Wu, Yong-Shi | Algebraic solution for a two-level atom in radiation fields and the Freeman resonances | Using techniques of complex analysis in an algebraic approach, we solve the wave equation for a two-level atom interacting with a monochromatic light field exactly. A closed-form expression for the quasienergies is obtained, which shows that the Bloch-Siegert shift is always finite, regardless of ... | Bloch-Siegert shift; Freeman resonances; Quasienergies | 2006-02 |
| 2 |
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Sokolsky, Pierre | Comparison of air fluorescence and ionization measurements of E.M. shower depth profiles: test of a UHECR detector technique | Measurements are reported on the fluorescence of air as a function of depth in electromagnetic showers initiated by bunches of 28.5 GeV electrons. The light yield is compared with the expected and observed depth profiles of ionization in the showers. It validates the use of atmospheric fluorescence... | Air fluorescence; Electromagnetic shower; Ultra-high energy cosmic rays; Ionization | 2006-02 |
| 3 |
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Vardeny, Zeev Valentine | Photophysics of excitons in quasi-one-dimensional organic semiconductors: single-walled carbon nanotubes and ∏-conjugated polymers | The nature of the primary photoexcitations in semiconducting single-walled carbon nanotubes (S-SWCNTs) is of strong current interest. We have studied the emission spectra of S-SWCNTs and two different rr-conjugated polymers in solutions and films, and have also performed ultrafast pump-probe spectro... | Photophysics; Excitons; Quasi-one-dimensional; Single-walled carbon nanotubes; pi-conjugated polymers | 2006-02 |
| 4 |
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Mishchenko, Eugene | Small-angle impurity scattering and the spin Hall conductivity in two-dimensional semiconductor systems | An arbitrarily small concentration of impurities can affect the spin Hall conductivity in a two-dimensional semiconductor system. We develop a Boltzmann-like equation that can be used for impurity scattering with an arbitrary angular dependence, and for an arbitrary angular dependence of the spin-o... | Spin Hall conductivity; Impurity scattering; Spin-orbit coupling | 2006-02 |
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