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Investigation Of Alignment Dynamics In Mg-Ne And Mg-Ar Two-Photon Fractional Collisions, David Allen Olsgaard
Investigation Of Alignment Dynamics In Mg-Ne And Mg-Ar Two-Photon Fractional Collisions, David Allen Olsgaard
Physics Theses & Dissertations
A new technique is used to observe the dynamics of electronic alignment in a dissociating collision complex. The technique requires the absorption of two optical photons during a single binary collision. Two exciting light fields are tuned into the wings of the 3s1s0-3p1 and 3p1p1-5s1s0 resonances of Mg where strong collisions with rare gas atoms induce transitions between corresponding molecular states. The alignment produced in the intermediate state by the first excitation is probed by the second laser as a function of relative linear laser polarization and laser …
Search For The Mössbauer Effect In 109ag, Shokrollah Rezaie-Serej
Search For The Mössbauer Effect In 109ag, Shokrollah Rezaie-Serej
Physics Theses & Dissertations
The 88-keV first-excited nuclear state in 109Ag has a mean lifetime of 57.1 sec and a corresponding natural linewidth of 1.15 x 10-17 eV which is nearly six orders of magnitude narrower than the width for the 93-keV 13.2-μsec state in 67Zn. The 93-keV transition in 67Zn has the narrowest linewidth for which the Mossbauer effect has been observed. The 88-keV transition in 109Ag is obviously a very difficult case for the observation of the Mossbauer effect and provides a stringent test for exploring the practical limits of inhomogeneous line broadening in real single …