FINAL-STATE INTERACTIONS IN THE ZERO-KINETIC-ENERGY-PHOTOELECTRON SPECTRUM OF H-2
A rotationally resolved zero-kinetic-energy (ZEKE) photoelectron spectrum has been recorded for the lowest energy valence band of H2. A coherent laser-based extreme ultraviolet (XUV) source, tuned from 128 200-128 900 cm-1 excites the molecules to the ionization limit, and near-threshold electrons,...
| Main Authors: | , |
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| Format: | Journal article |
| Language: | English |
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1992
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| _version_ | 1797097251890266112 |
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| author | Merkt, F Softley, T |
| author_facet | Merkt, F Softley, T |
| author_sort | Merkt, F |
| collection | OXFORD |
| description | A rotationally resolved zero-kinetic-energy (ZEKE) photoelectron spectrum has been recorded for the lowest energy valence band of H2. A coherent laser-based extreme ultraviolet (XUV) source, tuned from 128 200-128 900 cm-1 excites the molecules to the ionization limit, and near-threshold electrons, in a narrow energy bandwidth (a few cm-1) just below the ionization limit, are detected by field ionization as a function of laser wavelength. The rotational components for the H2+ X 2Σg+ (2-0) vibrational band show different relative intensities, compared to the conventional photoelectron spectrum and to the predictions of theoretical calculations. The perturbed intensities of the N+ = 0 ← J″ = 0 and the 0 ← 2 rotational lines are shown to be attributable to an interaction of the pseudocontinuum of near-threshold N+ = 0 np J′ = 1 Rydberg states, with the interloper N+ = 2, 26p J′ = 1 state. The enhanced intensity of the 2 ← 0 rotational line is attributable to a "complex resonance" involving the v′ = 3 R(0) 8p0 transition. © 1992 American Institute of Physics. |
| first_indexed | 2024-03-07T04:52:50Z |
| format | Journal article |
| id | oxford-uuid:d5906eb7-ef0c-4296-8dbc-bbdaa8da73c7 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T04:52:50Z |
| publishDate | 1992 |
| record_format | dspace |
| spelling | oxford-uuid:d5906eb7-ef0c-4296-8dbc-bbdaa8da73c72022-03-27T08:26:50ZFINAL-STATE INTERACTIONS IN THE ZERO-KINETIC-ENERGY-PHOTOELECTRON SPECTRUM OF H-2Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:d5906eb7-ef0c-4296-8dbc-bbdaa8da73c7EnglishSymplectic Elements at Oxford1992Merkt, FSoftley, TA rotationally resolved zero-kinetic-energy (ZEKE) photoelectron spectrum has been recorded for the lowest energy valence band of H2. A coherent laser-based extreme ultraviolet (XUV) source, tuned from 128 200-128 900 cm-1 excites the molecules to the ionization limit, and near-threshold electrons, in a narrow energy bandwidth (a few cm-1) just below the ionization limit, are detected by field ionization as a function of laser wavelength. The rotational components for the H2+ X 2Σg+ (2-0) vibrational band show different relative intensities, compared to the conventional photoelectron spectrum and to the predictions of theoretical calculations. The perturbed intensities of the N+ = 0 ← J″ = 0 and the 0 ← 2 rotational lines are shown to be attributable to an interaction of the pseudocontinuum of near-threshold N+ = 0 np J′ = 1 Rydberg states, with the interloper N+ = 2, 26p J′ = 1 state. The enhanced intensity of the 2 ← 0 rotational line is attributable to a "complex resonance" involving the v′ = 3 R(0) 8p0 transition. © 1992 American Institute of Physics. |
| spellingShingle | Merkt, F Softley, T FINAL-STATE INTERACTIONS IN THE ZERO-KINETIC-ENERGY-PHOTOELECTRON SPECTRUM OF H-2 |
| title | FINAL-STATE INTERACTIONS IN THE ZERO-KINETIC-ENERGY-PHOTOELECTRON SPECTRUM OF H-2 |
| title_full | FINAL-STATE INTERACTIONS IN THE ZERO-KINETIC-ENERGY-PHOTOELECTRON SPECTRUM OF H-2 |
| title_fullStr | FINAL-STATE INTERACTIONS IN THE ZERO-KINETIC-ENERGY-PHOTOELECTRON SPECTRUM OF H-2 |
| title_full_unstemmed | FINAL-STATE INTERACTIONS IN THE ZERO-KINETIC-ENERGY-PHOTOELECTRON SPECTRUM OF H-2 |
| title_short | FINAL-STATE INTERACTIONS IN THE ZERO-KINETIC-ENERGY-PHOTOELECTRON SPECTRUM OF H-2 |
| title_sort | final state interactions in the zero kinetic energy photoelectron spectrum of h 2 |
| work_keys_str_mv | AT merktf finalstateinteractionsinthezerokineticenergyphotoelectronspectrumofh2 AT softleyt finalstateinteractionsinthezerokineticenergyphotoelectronspectrumofh2 |