@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

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    dct:description """
              The formation of the negative hydrogen ion (H-) in collisions between a positive ion and a neutral atomic or molecular target is studied experimentally at impact energies of a few keV. The doubly-differential cross sections for H- formation are measured as a function of the kinetic energy and emission angle for the collision systems OH+ + Ar and O+ + H2O à 412 eV/a.m.u. These H- ions can be emitted at high energies (keV) in hard quasi-elastic two-body collisions involving a large momentum transfer to the H center. However, H- ions are preferentially emitted at low energy (eV) due to soft many-body (>2) collisions resulting in a low momentum transfer. The formation of H- ions by electron capture follows excitation or ionization of the molecule. The molecular fragmentation dynamics is modeled to simulate the emission of H- ions. The overall good agreement between the simulation and the experiment leads to the understanding of most of the experimental observations.
            """ ;
    dct:identifier "tel-00915849" ;
    dct:issued "2026-05-07T21:41:13.314821"^^xsd:dateTime ;
    dct:language "fr" ;
    dct:modified "2026-05-07T21:41:13.314827"^^xsd:dateTime ;
    dct:publisher <https://rec.harvest-normandie.data4citizen.com/organization/cce9db95-46d9-4dc2-84b6-764215d0a002> ;
    dct:title "Experimental investigation of the negative hydrogen ion emission in positively charged ion-atom/ion-molecule collisions" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "CCSD" ] ;
    dcat:distribution <https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-tel-00915849v1/resource/9e65e36d-c3bf-4d7d-8dd6-d42af8b207ba> ;
    dcat:keyword "anions",
        "dynamique-moleculaire",
        "electron-spectroscopy",
        "electronic-excitation",
        "electrons-capture",
        "excitation-electronique",
        "hydrogen-ions",
        "infoeu-reposemanticsdoctoralthesis",
        "interaction-ion-molecule",
        "ion-molecule-collisions",
        "ions-hydrogene",
        "molecular-dynamics",
        "physphysphys-atm-phphysics-physicsphysics-physicsatomic-and-molecular-clusters-physicsat",
        "spectrometrie-de-masse-a-temps-de-vol",
        "spectroscopie-electronique",
        "theses",
        "time-of-flight-mass-spectrometry" ;
    dcat:landingPage <https://theses.hal.science/tel-00915849> .

<https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-tel-00915849v1/resource/9e65e36d-c3bf-4d7d-8dd6-d42af8b207ba> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2026-05-07T21:41:13.331767"^^xsd:dateTime ;
    dct:modified "2026-05-07T21:41:13.296541"^^xsd:dateTime ;
    dct:title "Experimental investigation of the negative hydrogen ion emission in positively charged ion-atom/ion-molecule collisions" ;
    dcat:accessURL <https://theses.hal.science/tel-00915849> .

<https://rec.harvest-normandie.data4citizen.com/organization/cce9db95-46d9-4dc2-84b6-764215d0a002> a foaf:Agent ;
    foaf:name "test_moissonnage_selune" .

<https://theses.hal.science/tel-00915849> a foaf:Document .