Detailed comparison of theory and experiment of strong-field photodetachment of the negative hydrogen ion
We study the strong-field interaction of a negative hydrogen ion in a short infrared laser pulse. An imaging technique is employed in a fast ion beam to record angular-resolved energy distributions of the photodetached electrons. The spectrum exhibits four excess photon channels. A detailed analysis...
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| Veröffentlicht in: | Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2003-12, Vol.68 (6), Article 063404 |
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| container_title | Physical review. A, Atomic, molecular, and optical physics |
| container_volume | 68 |
| creator | Reichle, Rainer Helm, Hanspeter Kiyan, Igor Yu |
| description | We study the strong-field interaction of a negative hydrogen ion in a short infrared laser pulse. An imaging technique is employed in a fast ion beam to record angular-resolved energy distributions of the photodetached electrons. The spectrum exhibits four excess photon channels. A detailed analysis of the energy and angular distribution is presented, including a comparison with recent theories. From our data we determine elastic-scattering phase shifts of the partial continuum waves in the lowest-order detachment channel. Quantitative agreement with scattering theory is obtained. A quantum interference effect predicted in a recent Keldysh-like theory is observed at energies close to threshold. We propose an analogy to a double-slit model which explains the interference features in a simple and intuitive way. We also verify the applicability of the Wigner threshold law in the strong-field regime and discuss its role in the observed quantum interference. |
| doi_str_mv | 10.1103/PhysRevA.68.063404 |
| format | Article |
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An imaging technique is employed in a fast ion beam to record angular-resolved energy distributions of the photodetached electrons. The spectrum exhibits four excess photon channels. A detailed analysis of the energy and angular distribution is presented, including a comparison with recent theories. From our data we determine elastic-scattering phase shifts of the partial continuum waves in the lowest-order detachment channel. Quantitative agreement with scattering theory is obtained. A quantum interference effect predicted in a recent Keldysh-like theory is observed at energies close to threshold. We propose an analogy to a double-slit model which explains the interference features in a simple and intuitive way. 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A, Atomic, molecular, and optical physics</title><description>We study the strong-field interaction of a negative hydrogen ion in a short infrared laser pulse. An imaging technique is employed in a fast ion beam to record angular-resolved energy distributions of the photodetached electrons. The spectrum exhibits four excess photon channels. A detailed analysis of the energy and angular distribution is presented, including a comparison with recent theories. From our data we determine elastic-scattering phase shifts of the partial continuum waves in the lowest-order detachment channel. Quantitative agreement with scattering theory is obtained. A quantum interference effect predicted in a recent Keldysh-like theory is observed at energies close to threshold. We propose an analogy to a double-slit model which explains the interference features in a simple and intuitive way. We also verify the applicability of the Wigner threshold law in the strong-field regime and discuss its role in the observed quantum interference.</description><subject>ANGULAR DISTRIBUTION</subject><subject>ATOMIC AND MOLECULAR PHYSICS</subject><subject>COMPARATIVE EVALUATIONS</subject><subject>ELASTIC SCATTERING</subject><subject>ELECTRON DETACHMENT</subject><subject>ELECTRONS</subject><subject>ENERGY SPECTRA</subject><subject>HYDROGEN IONS 1 MINUS</subject><subject>INTERFERENCE</subject><subject>ION BEAMS</subject><subject>LASER RADIATION</subject><subject>PHASE SHIFT</subject><subject>PHOTON-ATOM COLLISIONS</subject><subject>PHOTONS</subject><subject>PULSES</subject><issn>1050-2947</issn><issn>1094-1622</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2003</creationdate><recordtype>article</recordtype><recordid>eNo1kE1LAzEQhoMoWKt_wFPA89Z87GY3x1K1CgVF9Bx2k9lupE2WJBT335tSO3OYYd6ZF-ZB6J6SBaWEP34MU_yEw3IhmgURvCTlBZpRIsuCCsYuj31FCibL-hrdxPhDcpSNnCH7BKm1OzBY-_3YBhu9w77HaQAfJtw6g-F3hGD34NJRiCl4ty16CzuDx8Enb7KDHs56PsQOtm2yB8DDZILfgsPWu1t01be7CHf_dY6-X56_Vq_F5n39tlpuCs1Lnoqq6spacmiAm7qCjvO2pryqaqA96zoDmlBqBMlDLZucHTNCCAIdYw3RHZ-jh5Ovj8mqqG0CPWjvHOikGBGZjZR5i522dPAxBujVmH9sw6QoUUek6oxUiUadkPI_uOxtFg</recordid><startdate>20031201</startdate><enddate>20031201</enddate><creator>Reichle, Rainer</creator><creator>Helm, Hanspeter</creator><creator>Kiyan, Igor Yu</creator><scope>AAYXX</scope><scope>CITATION</scope><scope>OTOTI</scope></search><sort><creationdate>20031201</creationdate><title>Detailed comparison of theory and experiment of strong-field photodetachment of the negative hydrogen ion</title><author>Reichle, Rainer ; Helm, Hanspeter ; Kiyan, Igor Yu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c343t-55b4793e8e3d75eb33a713557e1f2bbdec011d60713c98989b2d6660eb2280cb3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2003</creationdate><topic>ANGULAR DISTRIBUTION</topic><topic>ATOMIC AND MOLECULAR PHYSICS</topic><topic>COMPARATIVE EVALUATIONS</topic><topic>ELASTIC SCATTERING</topic><topic>ELECTRON DETACHMENT</topic><topic>ELECTRONS</topic><topic>ENERGY SPECTRA</topic><topic>HYDROGEN IONS 1 MINUS</topic><topic>INTERFERENCE</topic><topic>ION BEAMS</topic><topic>LASER RADIATION</topic><topic>PHASE SHIFT</topic><topic>PHOTON-ATOM COLLISIONS</topic><topic>PHOTONS</topic><topic>PULSES</topic><toplevel>online_resources</toplevel><creatorcontrib>Reichle, Rainer</creatorcontrib><creatorcontrib>Helm, Hanspeter</creatorcontrib><creatorcontrib>Kiyan, Igor Yu</creatorcontrib><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>Physical review. 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| ispartof | Physical review. A, Atomic, molecular, and optical physics, 2003-12, Vol.68 (6), Article 063404 |
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| language | eng |
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| source | American Physical Society Journals |
| subjects | ANGULAR DISTRIBUTION ATOMIC AND MOLECULAR PHYSICS COMPARATIVE EVALUATIONS ELASTIC SCATTERING ELECTRON DETACHMENT ELECTRONS ENERGY SPECTRA HYDROGEN IONS 1 MINUS INTERFERENCE ION BEAMS LASER RADIATION PHASE SHIFT PHOTON-ATOM COLLISIONS PHOTONS PULSES |
| title | Detailed comparison of theory and experiment of strong-field photodetachment of the negative hydrogen ion |
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