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Bryn Mawr College

2001

Articles 1 - 4 of 4

Full-Text Articles in Physics

Microwave Ionization Of An Atomic Electron Wave Packet, Michael Noel, Lung Ko, T. F. Gallagher Jul 2001

Microwave Ionization Of An Atomic Electron Wave Packet, Michael Noel, Lung Ko, T. F. Gallagher

Physics Faculty Research and Scholarship

A short microwave pulse is used to ionize a lithium Rydberg wave packet launched from the core at a well-defined phase of the field. We observe a strong dependence on the relative phase between the motion of the wave packet and the oscillations of the field. This phase dependent ionization is also studied as a function of the relative frequency. Our experimental observations are in good qualitative agreement with a one-dimensional classical model of wave packet ionization.


Polarization Effects In Quantum Coherences Probed By Two-Color, Resonant Four-Wave Mixing In The Time Domain, Elizabeth Mccormack, E. Sarajlic Feb 2001

Polarization Effects In Quantum Coherences Probed By Two-Color, Resonant Four-Wave Mixing In The Time Domain, Elizabeth Mccormack, E. Sarajlic

Physics Faculty Research and Scholarship

We present a combined theoretical and experimental study of the effects of laser polarization on optical coherences produced in two-color, resonant four-wave mixing (TC-RFWM). A time-dependent model incorporating diagrammatic perturbation theory and spherical tensor formalism is used to interpret observations of quantum beats due to molecular hyperfine structure in time-resolved TC-RFWM in nitric oxide. Good agreement is found between the model and the observed time-resolved signals for two distinct excitation schemes and a variety of polarization configurations including both polarization and population gratings. Measured hyperfine energy intervals are reported for the X(2)Pi (1/2) , v = 0 ground state and …


Microwave Ionization Of An Atomic Electron Wave Packet, Michael W. Noel, Lung Ko, T. F. Gallagher Jan 2001

Microwave Ionization Of An Atomic Electron Wave Packet, Michael W. Noel, Lung Ko, T. F. Gallagher

Physics Faculty Research and Scholarship

A short microwave pulse is used to ionize a lithium Rydberg wave packet launched from the core at a well-defined phase of the field. We observe a strong dependence on the relative phase between the motion of the wave packet and the oscillations of the field. This phase dependent ionization is also studied as a function of the relative frequency. Our experimental observations are in good qualitative agreement with a one-dimensional classical model of wave packet ionization.


A New Mechanism For Spin-Lattice Relaxation Of Heavy Nuclei In The Solid State: 207pb Relaxation In Lead Nitrate, John B. Grutzner, Kevin W. Stewart, Roderick E. Wasylishen, Michael D. Lumsden, Cecil Dybowski, Peter A. Beckmann Jan 2001

A New Mechanism For Spin-Lattice Relaxation Of Heavy Nuclei In The Solid State: 207pb Relaxation In Lead Nitrate, John B. Grutzner, Kevin W. Stewart, Roderick E. Wasylishen, Michael D. Lumsden, Cecil Dybowski, Peter A. Beckmann

Physics Faculty Research and Scholarship

No abstract provided.