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Full-Text Articles in Physics

A Simple Model For Impurity Photoabsorption In Silicon, Gust Bambakidis Jun 1984

A Simple Model For Impurity Photoabsorption In Silicon, Gust Bambakidis

Physics Faculty Publications

A simple model for absorption of infrared radiation by impurity atoms in silicon crystals has been developed and applied to electronic excitations ofthe Group V donors Bi, Sb, As, and P, and the Group III acceptors B, AI, Ga, and In. The model is based on the quantum-defect method for approximating bound donor or acceptor wave functions outside the core region of the impurity. For each donor species, the relative oscillator strengths have been calculated for the transitions from the ground state to the first four excited levels. For each acceptor species, the relative oscillator strengths were calculated for transitions ...


Narrow 0+ State In 20Ne And 06+ And 07+ Rotational Bands, H. T. Richards, G. Caskey, J. H. Billen, S. R. Riedhauser, Daniel J. Steck Jun 1984

Narrow 0+ State In 20Ne And 06+ And 07+ Rotational Bands, H. T. Richards, G. Caskey, J. H. Billen, S. R. Riedhauser, Daniel J. Steck

Physics Faculty Publications

A reanalysis of old data removes the (0+,2+) ambiguity for a very narrow state at Ex(20Ne)=11.55 MeV and gives a unique 0+ assignment. Such a 0+ state corresponds well to a predicted state at 11.494 MeV of unusually small reduced widths for decay to both the ground and first excited state of 16O. This new 0+ state is a better 06+ band head for the 8p-4h states at 15.159 MeV (6+) and 18.538 MeV (8+) than the currently accepted 0+ state at 12.44 MeV. Possible 2+ and 4 ...


Relativistic Invariance And Zitterbewegung, James A. Lock Mar 1984

Relativistic Invariance And Zitterbewegung, James A. Lock

Physics Faculty Publications

We examine the question of what it is about the structure of relativistic quantum mechanics that causes the nonintuitive phenomenon of the Zitterbewegung of particle position to exist. Further, we examine various assumptions concerning the measurement process which are implicit in the observation of Zitterbewegung.


Delineation Of A Coal Burn Edge With Seismic Refraction, Karen D. Sontag, Paul J. Wolfe Jan 1984

Delineation Of A Coal Burn Edge With Seismic Refraction, Karen D. Sontag, Paul J. Wolfe

Physics Faculty Publications

No abstract provided.