Please use this identifier to cite or link to this item:
https://open.uns.ac.rs/handle/123456789/31730
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Savić Igor | - |
dc.contributor.author | Gerlich Dieter | - |
dc.contributor.author | Asvany Oskar | - |
dc.contributor.author | Jusko Pavol | - |
dc.contributor.author | Schlemmer Stephan | - |
dc.date.accessioned | 2020-12-14T20:35:16Z | - |
dc.date.available | 2020-12-14T20:35:16Z | - |
dc.date.issued | 2015 | - |
dc.identifier.issn | 0026-8976 | - |
dc.identifier.uri | https://open.uns.ac.rs/handle/123456789/31730 | - |
dc.description.abstract | © 2015 Taylor & Francis. Complexes of the triatomic hydrogen ion with helium were synthesised in a low-temperature 22-pole rf ion trap at He number densities of up to 10<sup>16</sup> cm<sup>-</sup><sup>3</sup>. Absolute ternary rate coefficients for sequentially attaching He atoms have been determined from the growth of complexes with increasing storage time. The number of helium-tagged ions is significantly reduced when increasing the nominal temperature from 4 to 25 K. Competition between attachment and dissociation via collisions leads to stationary H<inf>e</inf><inf>n</inf>-H<sup>+</sup><inf>3</inf> (n up to 9) distributions. State-specific excitation of the trapped H<sup>+</sup><inf>3</inf> ions via IR transitions significantly reduces the formation of complexes. Tuning the laser to Δv<inf>2</inf> = 1 transitions in the range of 2726 cm<sup>-</sup><sup>1</sup> leads to LIICG lines, i.e., to spectra caused by laser-induced inhibition of complex growth. In addition, almost 100 lines have been found between 2700 and 2765 cm<sup>-</sup><sup>1</sup>, which are attributed to laser-induced dissociation of the in situ formed He-H<sup>+</sup><inf>3</inf> complex ions. These lines are not yet assigned; however, their absorption strength, statistics and predissociation lifetimes provide interesting information on both the stable complexes as well as on scattering resonances in low-energy H<sup>+</sup><inf>3</inf>+He collisions. New calculations of the potential energy surface will help to analyse the dissociation spectrum. There are some indications that para-H<sup>+</sup><inf>3</inf> is enriched under the conditions of the present experiment. | - |
dc.language.iso | en | - |
dc.relation.ispartof | Molecular Physics | - |
dc.source | CRIS UNS | - |
dc.source.uri | http://cris.uns.ac.rs | - |
dc.title | Controlled synthesis and analysis of He-H<sup>+</sup> <inf>3</inf> in a 3.7 K ion trap | - |
dc.type | Journal/Magazine Article | - |
dc.identifier.doi | 10.1080/00268976.2015.1037802 | - |
dc.identifier.scopus | 2-s2.0-84941260008 | - |
dc.identifier.url | https://www.cris.uns.ac.rs/record.jsf?recordId=98208&source=BEOPEN&language=en | - |
dc.identifier.url | https://api.elsevier.com/content/abstract/scopus_id/84941260008 | - |
dc.relation.lastpage | 2332 | - |
dc.relation.firstpage | 2320 | - |
dc.relation.issue | 15-16 | - |
dc.relation.volume | 113 | - |
dc.identifier.externalcrisreference | (BISIS)98208 | - |
item.grantfulltext | none | - |
item.fulltext | No Fulltext | - |
crisitem.author.dept | Prirodno-matematički fakultet, Departman za fiziku | - |
crisitem.author.orcid | 0000-0002-9954-7457 | - |
crisitem.author.parentorg | Prirodno-matematički fakultet | - |
Appears in Collections: | PMF Publikacije/Publications |
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