Počet záznamů: 1

Spectroscopic Characterization of a Steam Arc Cutting Torch

  1. 1.
    0366111 - UFP-V 2012 RIV US eng J - Článek v odborném periodiku
    Sember, Viktor - Mašláni, Alan - Křenek, Petr - Heinrich, M. - Nimmervoll, R. - Pauser, H. - Hrabovský, Milan
    Spectroscopic Characterization of a Steam Arc Cutting Torch.
    Plasma Chemistry and Plasma Processing. Roč. 31, č. 5 (2011), s. 755-770 ISSN 0272-4324
    Grant CEP: GA ČR GAP205/11/2070
    Výzkumný záměr: CEZ:AV0Z20430508
    Klíčová slova: Plasma cutting * Optical emission spectroscopy * Steam arc * Supersonic plasma jet
    Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
    Impakt faktor: 1.602, rok: 2011
    http://www.springerlink.com/content/m4185257378320u2/fulltext.pdf http://www.springerlink.com/content/m4185257378320u2/fulltext.pdf

    Optical emission spectroscopy has been used to investigate the characteristics of a plasma jet produced by a steam arc cutting torch operated in air at atmospheric pressure. A procedure has been developed for simultaneous determination of temperature and pressure in the plasma jet as well as an effective nonequilibrium factor. It is based on comparison of a few experimental and simulated spectral quantities. The experimental data were obtained from the spectrum of Hβ and OII lines centred at 480 nm. The existence of the shock wave structure characteristic of an underexpanded jet can clearly be deduced from the measured properties. In the first expansion region, the centreline pressure drops from about 1.4 atm at the nozzle exit to about 0.7 atm a few tenths of millimeter downstream. On the contrary, the centreline temperature remains almost unchanged within this region and reaches the value of about 23 000 K
    Trvalý link: http://hdl.handle.net/11104/0201196