Extracting ion emission lines from femtosecond-laser plasma x-ray spectra heavily contaminated by spikes (Articolo in rivista)

Type
Label
  • Extracting ion emission lines from femtosecond-laser plasma x-ray spectra heavily contaminated by spikes (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1063/1.2780872 (literal)
Alternative label
  • Gasilov, SV; Faenov, AY; Pikuz, TA; Villoresi, P; Poletto, L; Stagira, S; Calegari, F; Vozzi, C; Nisoli, M (2007)
    Extracting ion emission lines from femtosecond-laser plasma x-ray spectra heavily contaminated by spikes
    in Journal of applied physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Gasilov, SV; Faenov, AY; Pikuz, TA; Villoresi, P; Poletto, L; Stagira, S; Calegari, F; Vozzi, C; Nisoli, M (literal)
Pagina inizio
  • 063303 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://dx.doi.org/10.1063/1.2780872 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 102 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 6 (literal)
Note
  • Scopu (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • National Laboratory for Ultrafast and Ultraintense Optical Science, Department of Physics, CNR-INFM, Politecnico di Milano, Italy and Institute for Mathematical Modeling of Russian Academy of Science, Miusskaja Square 4A, 125047 Moscow, Russia Joint Institute for High Temperatures of Russian Academy of Sciences, Izhorskaja Street 13/19, 127412 Moscow, Russia and Kansai Photon Science Institute (KPSI), Japan Atomic Energy Agency (JAEA), 8-1 Umemidai, Kizugawa-shi, Kyoto 619-0215, Japan Laboratory for Ultraviolet and X-Ray Optical Research-CNR-INFM, DEI, Università di Padova, via Gradenigo 6/B, I-35131 Padova, Italy National Laboratory for Ultrafast and Ultraintense Optical Science, Department of Physics, CNR-INFM, Politecnico di Milano, Piazza L. da Vinci, 32, I-20133 Milano, Italy (literal)
Titolo
  • Extracting ion emission lines from femtosecond-laser plasma x-ray spectra heavily contaminated by spikes (literal)
Abstract
  • Nowadays charged-coupled device (CCD) detectors are widely used for the registration of multicharged ions x-ray spectra. These spectra are generated in a plasma during interaction of ultrashort, ultraintense laser pulses with solid targets. Strong parasitic radiation from the plasma affects CCD detectors and contaminates resulting spectra, so that spectral features can be completely covered by noise even during measurements with a very short accumulation time. In this work we propose a 'mean to median' (M2M) algorithm for noise suppression in femtosecond laser plasma x-ray spectra. Series of spectra is necessary for the identification of corrupted data points by the developed method. The algorithm was tested with model spectra which reflect main features of experimental data. In practice we used it for extracting information about spectral lines of Ne-like Fe ions and He-like Al ions which allowed us to calculate plasma parameters. It is demonstrated that M2M method is able to clean spectra with more than 10% of corrupted pixels. Fluctuations in intensity of spectral lines induced by laser instability do not affect validity of the proposed method.(C) 2007 American Institute of Physics. (literal)
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