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  • 42.55.Gp  (1)
  • Ionizing radiations (ultraviolet, X-rays, γ-rays, ions, electrons, positrons, neutrons, and mesons, etc)  (1)
  • Lasing processes  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Development and characterisation of an XeCl excimer laser-generated soft-X-ray plasma source and its applications (1996)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 18 (1996), S. 1241-1255 
    Details
    ISSN: 0392-6737
    Schlagwort(e): thermodynamics of plasmas ; Ionizing radiations (ultraviolet, X-rays, γ-rays, ions, electrons, positrons, neutrons, and mesons, etc) ; Biophysical instrumentation and techniques ; X-ray spectra ; PACS 42.55Gp ; Excimer lasers
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Summary A large-aperture, long-pulse XeCl excimer laser has been used to generate a soft-X-ray plasma source. Several laser optical configurations have been employed to optimise X-ray emission, including positive-branch unstable resonators and injection by seeding the gain region of the laser with a small commercial excimer laser, resulting in power densities in the range 1012–1014 W cm−2. The characteristics of the plasma source for each different laser configuration and for different target materials are investigated. The most suitable source conditions (spectral energy distribution, time duration, etc.) for specific applications are discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02453259
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Characterization of a high-uniformity, X-ray preionized XeCl laser (1987)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 9 (1987), S. 873-891 
    Details
    ISSN: 0392-6737
    Schlagwort(e): Lasing processes
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Beschreibung / Inhaltsverzeichnis: Riassunto Si presentano le caratteristiche costruttive e operative di un laser a XeCl preionizzato a raggi X e funzionante in regime di scarica autosostenuta. Si sono ottenuti impulsi laser con energie specifiche di 3.3 J/l e durata di 150 ns. L’uniformità spaziale del fascio laser di dimensioni (3.5×3.5) cm2 è risultata migliore del 90%. La massima efficienza intrinseca raggiunta senza l’uso di un circuito esterno di preimpulso è stata del 3.6%. L’introduzione del preimpulso ad alta tensione per intensificare la preionizzazione ha consentito di migliorare l’accoppiamento in energia depositata nel mezzo attivo e di ottenere un punto di lavoro piú stabile a tensione di pompaggio piú bassa.
    Kurzfassung: Резюме Описываются конструкция и характеристики рентгеновского предионизационного XeCl лазера. Были получены лазерные импульсы с удельной энергией 3.3 Дж/литр и длительностью 150 нс. Пространственная однородность лазерного пучка с размерами (3.5×3.5) см2 была лучше 90%. Была получена внутренняя эффективность вплоть до 3.6% без использования внешнего предимпульсного тока. Успешно опробовано введение предимпульса высокого напряжения для интенсификации предионизации. Получено улучшение связи энергии в активной среде и более надежные условия работы лазера при меньшем напряжении.
    Notizen: Summary The construction and the operating characteristics of a X-ray preionized discharge XeCl laser are described. A specific laser output energy of 3.3 J/l with a pulsewidth of 150 ns and a spatial beam uniformity better than 90% in a (3.5×3.5) cm2 cross-section was achieved. Intrinsic efficiency up to 3.6% has been obtained without the use of an external prepulse circuit. A fast, high-voltage prepulse to intensify the preionization has been successfully tried out, obtaining a better energy coupling to the gas and more reliable conditions at lower working voltage.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02453756
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  • 3
    Digitale Medien
    Digitale Medien
    Space and time resolved discharge evolution of a large volume X-ray triggered XeCl laser system (1992)
    Springer
    Applied physics 55 (1992), S. 84-91 
    Details
    ISSN: 1432-0649
    Schlagwort(e): 42.55.Gp ; 52.80.Mg
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The spatial distribution and the temporal development of the net gain have been measured in a ten liter active volume switchless discharge XeCl laser. The experimental results are compared with both zero-dimensional and two-dimensional kinetic code predictions. The comparison between the results of the kinetic codes and of some measurements relevant to the time-dependent discharge homogeneity allows a deeper insight into the influence of the streamer evolution on the discharge characteristics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00348619
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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