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  • 1
    ISSN: 0392-6737
    Keywords: Inelastic scattering of atoms and molecules
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto Sono state misurate le distribuzioni degli stati di carica all’equilibrio di ioni che derivano da solidi. Come particelle incidenti sono stati usati proiettili ionici sia atomici (C+, N+, O+) che molecolari (0.025〈E/M〈0.108 MeV/u). I dati degli ioni atomici proiettile sono ben in accordo coi dati di altri autori in un intervallo nel quale essi si sovrappongono. Le frazioni di stati di carica di ioni di frammenti molecolari fuoriuscenti dietro un foglio di carbonio sono fortemente influenzati dall’esplosione di Coulomb e possibilmente dal potenziale di risveglio.
    Notes: Summary Equilibrium charge state distributions of ions emerging from solids have been measured. As incident particles were used both atomic (C+, N+, O+) and molecular (N 2 + , CO+) projectile ions (0.025〈E/M〈0.108 MeV/u). The data of atomic projectile ions agree well with the data of other authors in a range in which they overlap. Charge state fractions of emerging molecular-fragment ions behind a carbon foil are strongly influenced by the Coulomb explosion and possibly by the wake potential.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0392-6737
    Keywords: Inelastic scattering of atoms and molecules
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto Sono state determinate le sezioni d’urto doppie differenziali assolute per la ionizzazione del bersaglio e la perdita dell’elettrone proiettile in collisioni di ioni H+, H 2 + ,3He+ e3He++ (da 0.4 a 2.0 Me V/u) con bersagli di gas He e Ar ad angoli di emissione degli elettroni da 0° a 60°. I risultati sperimentali sono qualitativamente ben descritti dalle approssimazioni di Born per onde piane che comprendono la schermatura del proiettile nella ionizzazione del bersaglio e dell’atomo bersaglio nel caso di perdita dell’elettrone.
    Abstract: Резюме Определяются абсолютные дважды дифференшиальные поперечные сечения для ионизации мишени и потери электровов налетающими частишами при соударениях ионов H+, H 2 + ,3He+ и3He++ (от 0.4 до 2.0 Me V/u) в случае газовых Не и Ar мишеней при углах эмиссии электронов от 0° до 60°. Экспериментальные результаты качественно хорощо описываются с помощью плоско-волнового борновского приближения, включая экранирование налетающей частицы при ионизации мишени в случае потери электрона.
    Notes: Summary Absolute double differential cross-sections for target ionization and projectile electron loss were determined in collisions of H+, H2 +,3He+ and3He++ ions (0.4 to 2.0 Me V/u) with He and Ar gas targets at electron emission angles from 0° up to 60°. The experimental results are qualitatively well described by plane-wave Born approximations including screening of the projectile in target ionization and of the target atom in the case of electron loss.
    Type of Medium: Electronic Resource
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