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Observation of high-lying resonances in the H- ion


Please use this identifier to cite or link to this item: http://hdl.handle.net/1928/6907

Observation of high-lying resonances in the H- ion

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dc.contributor.author Harris, Philip G.
dc.date.accessioned 2008-09-09T17:36:21Z
dc.date.available 2008-09-09T17:36:21Z
dc.date.issued 2008-09-09T17:36:21Z
dc.date.submitted May 1990
dc.identifier.uri http://hdl.handle.net/1928/6907
dc.description.abstract This dissertation reports the observation of several series of resonances, for which both electrons are in excited states, in the photodetachment cross section of H-. These ‘P doubly-excited states interfere with the continuum in which they are embedded, and appear as dips in the production cross section of excited neutral hydrogen. The experiment was performed by intersecting an 800 MeV H- beam with a (266 nm) laser beam at varying angles; the relativistic Doppler shift then “tuned” the photon energy in the barycentric frame. The process was observed by using a magnet strong enough to strip the electrons from the excited hydrogen atoms in selected states n and detecting the resulting protons, which allowed the isolation of the individual n channels. Three resonances are clearly visible in each channel. The data support recent theoretical calculations for the positions of doubly excited ‘P resonances, and verify a new Rydberg-like formula for the modified Coulomb potential. en_US
dc.description.sponsorship This work was supported by the Division of Chemical Sciences, Office of Basic Energy Sciences, Ofice of Energy Research, U.S. Department of Energy, and was also funded in part by the U.S. Army Strategic Defense Command. en_US
dc.language.iso en_US en_US
dc.subject Hydrogen ion en_US
dc.subject High-lying resonances en_US
dc.subject.lcsh Electron nuclear double resonance.
dc.subject.lcsh Hydrogen ions.
dc.title Observation of high-lying resonances in the H- ion en_US
dc.type Dissertation en_US
dc.description.degree Doctor of Physics en_US
dc.description.level Doctoral en_US
dc.description.department University of New Mexico. Dept. of Physics & Astronomy en_US
dc.description.advisor Bryant, Howard
dc.description.committee-member Donahue, Joey
dc.description.committee-member Finley, J. Daniel III
dc.description.committee-member McNeil, Bob
dc.description.committee-member Bassalleck, Bernd

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