{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/25308"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/25308","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Photoionization of excited states of atomic hydrogen in a strong electric field","abstract":"The photoionization of excited states of atomic hydrogen in a strong external electric field is examined theoretically and experimentally. A theoretical treatment which predicts novel effects in the excitation of the broad resonant states in the continuum from pure parabolic Stark states is presented. The study of these effects is not possible in complex atoms, since only in the hydrogen atom are the fine-structure splittings of the low-lying states small enough to allow the excitation of pure parabolic states in fields of laboratory strength. The first observation of broad resonances in the photoionization of atomic hydrogen in an electric field is reported. The various properties of the resonant structure are compared to theory. Under conditions in which pure parabolic n=2 intermediate states are excited, it is found that the resonant structure above the zero-field ionization limit can be selectively enhanced or suppressed through the choice of the intermediate state, in agreement with theory.","abstract_html":"The photoionization of excited states of atomic hydrogen in a strong external electric field is examined theoretically and experimentally. A theoretical treatment which predicts novel effects in the excitation of the broad resonant states in the continuum from pure parabolic Stark states is presented. The study of these effects is not possible in complex atoms, since only in the hydrogen atom are the fine-structure splittings of the low-lying states small enough to allow the excitation of pure parabolic states in fields of laboratory strength. The first observation of broad resonances in the photoionization of atomic hydrogen in an electric field is reported. The various properties of the resonant structure are compared to theory. Under conditions in which pure parabolic n=2 intermediate states are excited, it is found that the resonant structure above the zero-field ionization limit can be selectively enhanced or suppressed through the choice of the intermediate state, in agreement with theory.","abstract_has_math":false,"creators":["Glab, Wallace Lee"],"institution":null,"degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Physics","degree_department":null,"school":null,"contributors":["Nayfeh, Munir H."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011-06-06T18:38:36Z","date_published":"2011-06-06T18:38:36Z","updated_at":"2026-07-22T22:25:24Z","subjects":["photoionization of excited states","atomic hydrogen","strong electric field","parabolic Stark states"],"languages":["en"],"rights":["1984 Wallace Lee Glab"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["4966821"],"render_values":[{"text":"4966821","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/25308","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Nayfeh, Munir H."]},{"key":"dc:creator","label":"Author","values":["Glab, Wallace Lee"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2011-06-06T18:38:36Z","10000-01-01","1984"]},{"key":"dc:type","label":"Dc Type","values":["Dissertation / Thesis","text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Physics"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["photoionization of excited states","atomic hydrogen","strong electric field","parabolic Stark states"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["1984 Wallace Lee Glab"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["4966821","http://hdl.handle.net/2142/25308"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["The photoionization of excited states of atomic hydrogen in a strong external electric field is examined theoretically and experimentally. A theoretical treatment which predicts novel effects in the excitation of the broad resonant states in the continuum from pure parabolic Stark states is presented. The study of these effects is not possible in complex atoms, since only in the hydrogen atom are the fine-structure splittings of the low-lying states small enough to allow the excitation of pure parabolic states in fields of laboratory strength. The first observation of broad resonances in the photoionization of atomic hydrogen in an electric field is reported. The various properties of the resonant structure are compared to theory. Under conditions in which pure parabolic n=2 intermediate states are excited, it is found that the resonant structure above the zero-field ionization limit can be selectively enhanced or suppressed through the choice of the intermediate state, in agreement with theory.","Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-06T18:38:36Z No. of bitstreams: 1 1984_glab.pdf: 4176665 bytes, checksum: 45a1bdf8081a87e87b3b65d3cec275da (MD5)","Made available in DSpace on 2011-06-06T18:38:36Z (GMT). No. of bitstreams: 1 1984_glab.pdf: 4176665 bytes, checksum: 45a1bdf8081a87e87b3b65d3cec275da (MD5) Previous issue date: 1984","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Carolyn Mead (cmead2@illinois.edu) on 2011-06-06T18:38:36Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:15:44-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: Thesis","Thesis","U of I Only"]},{"key":"dc:title","label":"Title","values":["Photoionization of excited states of atomic hydrogen in a strong electric field"]}]}],"canonical_facts":{"dc:contributor":["Nayfeh, Munir H."],"dc:creator":["Glab, Wallace Lee"],"dc:date":["2011-06-06T18:38:36Z","10000-01-01","1984"],"dc:description":["The photoionization of excited states of atomic hydrogen in a strong external electric field is examined theoretically and experimentally. A theoretical treatment which predicts novel effects in the excitation of the broad resonant states in the continuum from pure parabolic Stark states is presented. The study of these effects is not possible in complex atoms, since only in the hydrogen atom are the fine-structure splittings of the low-lying states small enough to allow the excitation of pure parabolic states in fields of laboratory strength. The first observation of broad resonances in the photoionization of atomic hydrogen in an electric field is reported. The various properties of the resonant structure are compared to theory. Under conditions in which pure parabolic n=2 intermediate states are excited, it is found that the resonant structure above the zero-field ionization limit can be selectively enhanced or suppressed through the choice of the intermediate state, in agreement with theory.","Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-06T18:38:36Z No. of bitstreams: 1 1984_glab.pdf: 4176665 bytes, checksum: 45a1bdf8081a87e87b3b65d3cec275da (MD5)","Made available in DSpace on 2011-06-06T18:38:36Z (GMT). No. of bitstreams: 1 1984_glab.pdf: 4176665 bytes, checksum: 45a1bdf8081a87e87b3b65d3cec275da (MD5) Previous issue date: 1984","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Carolyn Mead (cmead2@illinois.edu) on 2011-06-06T18:38:36Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:15:44-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: Thesis","Thesis","U of I Only"],"dc:identifier":["4966821","http://hdl.handle.net/2142/25308"],"dc:language":["en"],"dc:rights":["1984 Wallace Lee Glab"],"dc:subject":["photoionization of excited states","atomic hydrogen","strong electric field","parabolic Stark states"],"dc:title":["Photoionization of excited states of atomic hydrogen in a strong electric field"],"dc:type":["Dissertation / Thesis","text"],"thesis:degree_discipline":["Physics"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."]},"updated_at":"2026-07-22T22:25:24Z"}