Eksperimental and theoretical determination of temperature in plasmas

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Eksperimental and theoretical determination of temperature in plasmas

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dc.contributor.author Zmerli, Besma
dc.contributor.author Bennesib, Nebil
dc.contributor.author Dimitrijević, S. Milan
dc.contributor.editor Popović, Luka Č.
dc.date.accessioned 2011-01-10T10:15:37Z
dc.date.available 2011-01-10T10:15:37Z
dc.date.issued 2007
dc.identifier.uri http://hdl.handle.net/123456789/1450
dc.description.provenance Submitted by Slavisha Milisavljevic (slavisha) on 2011-01-10T10:15:37Z No. of bitstreams: 1 I02.pdf: 326159 bytes, checksum: 023d582d0c52306fa4cd4937950a825b (MD5) en
dc.description.provenance Made available in DSpace on 2011-01-10T10:15:37Z (GMT). No. of bitstreams: 1 I02.pdf: 326159 bytes, checksum: 023d582d0c52306fa4cd4937950a825b (MD5) Previous issue date: 2007 en
dc.language.iso sr en_US
dc.publisher Nenad Milovanović & Milan S. Dimitrijević, Astronomical Observatory, Belgrade en_US
dc.title Eksperimental and theoretical determination of temperature in plasmas en_US
mf.subject.keywords When plasma is in thermodynamic equilibrium, all species has the same temperature T. In practice, plasmas are generally not in equilibrium, so different temperatures can be obtained: We define kinetic temperature for particles having a mass m and a velocity v distributed around v by the Maxwell law. Using the Boltzmann law, giving repartition in the different states of an atom, we obtain the excitation temperature Texc and using the Saha equation, we derive the ionisation temperature. The electronic temperature Te is obtained by the classical kinetic gas theory; using the ion mass instead of the electron mass we deduce the ionic temperature Ti. Radiation temperature Trad is obtained using the Planck law. In a complete thermodynamic equilibrium CTE, we have equality of all these temperatures (Tcin = Texc = Tion = Te = Ti = Trad). The electronic temperature Te can be obtained using spectral lines broadening. For example, when the Doppler effect is predominant, the width of lines is proportional to the square root of Te. Using the hydrogen lines, we can found tables and empirical laws giving relations between widths and Te for an electronic density condition of plasma. Some authors use noble gas lines for determining Te. The first common and useful behaviour law of the width is an inverse proportional law to the root square of temperature; this law was performed by a power one. But this can not be a general law, because in some lines, the width increase with temperature and more consistent laws are developed relating the temperature variation with the structure of the emitter. en_US
mf.contributor.editor-in-chief Dimitrijević, S. Milan

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