dorsal/arxiv
View SchemaEnhanced dielectronic recombination of lithium-like Ti19+ ions in external ExB fields
| Authors | Timo Bartsch, Stefan Schippers, Michael Beutelspacher, Sebastian Boehm, Manfred Grieser, Gerald Gwinner, Amir A. Saghiri, Guido Saathoff, Reinhold Schuch, Dirk Schwalm, Andreas Wolf, Alfred Mueller |
|---|---|
| Categories | |
| ArXiv ID | physics/0003055 |
| URL | https://arxiv.org/abs/physics/0003055 |
| DOI | 10.1088/0953-4075/33/12/106 |
| Journal | Journal of Physics B 33, L453 (2000) |
Abstract
Dielectronic recombination(DR) of lithium-like Ti19+(1s2 2s) ions via 2s->2p core excitations has been measured at the Heidelberg heavy ion storage ring TSR. We find that not only external electric fields (0 <= Ey <= 280 V/cm) but also crossed magnetic fields (30 mT <= Bz <= 80 mT) influence the DR via high-n (2p_j nl)-Rydberg resonances. This result confirms our previous finding for isoelectronic Cl14+ ions [Bartsch T et al, PRL 82, 3779 (1999)] that experimentally established the sensitivity of DR to ExB fields. In the present investigation the larger 2p_{1/2}-2p_{3/2} fine structure splitting of Ti19+ allowed us to study separately the influence of external fields via the two series of Rydberg DR resonances attached to the 2s -> 2p_{1/2} and 2s -> 2p_{3/2} excitations of the Li-like core, extracting initial slopes and saturation fields of the enhancement. We find that for Ey > 80 V/cm the field induced enhancement is about 1.8 times stronger for the 2p_{3/2} series than for the 2p_{1/2} series.
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"abstract": "Dielectronic recombination(DR) of lithium-like Ti19+(1s2 2s) ions via 2s-\u003e2p\ncore excitations has been measured at the Heidelberg heavy ion storage ring\nTSR. We find that not only external electric fields (0 \u003c= Ey \u003c= 280 V/cm) but\nalso crossed magnetic fields (30 mT \u003c= Bz \u003c= 80 mT) influence the DR via high-n\n(2p_j nl)-Rydberg resonances. This result confirms our previous finding for\nisoelectronic Cl14+ ions [Bartsch T et al, PRL 82, 3779 (1999)] that\nexperimentally established the sensitivity of DR to ExB fields. In the present\ninvestigation the larger 2p_{1/2}-2p_{3/2} fine structure splitting of Ti19+\nallowed us to study separately the influence of external fields via the two\nseries of Rydberg DR resonances attached to the 2s -\u003e 2p_{1/2} and 2s -\u003e\n2p_{3/2} excitations of the Li-like core, extracting initial slopes and\nsaturation fields of the enhancement. We find that for Ey \u003e 80 V/cm the field\ninduced enhancement is about 1.8 times stronger for the 2p_{3/2} series than\nfor the 2p_{1/2} series.",
"arxiv_id": "physics/0003055",
"authors": [
"Timo Bartsch",
"Stefan Schippers",
"Michael Beutelspacher",
"Sebastian Boehm",
"Manfred Grieser",
"Gerald Gwinner",
"Amir A. Saghiri",
"Guido Saathoff",
"Reinhold Schuch",
"Dirk Schwalm",
"Andreas Wolf",
"Alfred Mueller"
],
"categories": [
"physics.atom-ph",
"astro-ph"
],
"doi": "10.1088/0953-4075/33/12/106",
"journal_ref": "Journal of Physics B 33, L453 (2000)",
"title": "Enhanced dielectronic recombination of lithium-like Ti19+ ions in external ExB fields",
"url": "https://arxiv.org/abs/physics/0003055"
},
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