Modelling of a pinched cascaded arc light source using argon

Broks, Bhp Bart; Keizer, JG Joris; Zijlmans, Rab Rens; Mullen, van der Jjam Joost

doi:10.1088/0963-0252/15/4/033

Cited by 8 publications

(7 citation statements)

References 39 publications

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“…Figure 2 gives ξ ei total as a function of λ for four different T evalues [20], ξ ff is taken constant [19] and the data for the freebound Biberman factor ξ fb is obtained from [21]. This figure shows that in the visible range the variation in ξ ei total is limited within a factor of 1.5.…”

Section: Theorymentioning

confidence: 95%

Absolute measurements of the continuum radiation to determine the electron density in a microwave-induced argon plasma

Iordanova¹,

Vries²,

Guillemier³

et al. 2007

J. Phys. D: Appl. Phys.

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A method for the determination of the electron density (ne) using the continuum radiation is presented. The radiation is calibrated with a standard tungsten ribbon lamp and thus expressed in absolute units. This method is applied to a microwave-induced argon plasma, created by a surfatron (2.45 GHz), for which the standard settings are: wavelength region at 648 nm, power of 60 W, pressure of 15 mbar, gas flow of 70 sccm and axial distance from the launcher of 3 cm. Due to the low degree of ionization, the influence of electron–ion interactions can be neglected; the radiation is predominantly generated by free–free interactions between electrons and atoms. The method provides the electron density values in the order of 1019 m−3 for different plasma settings. It is observed that the measured ne follows the well-known trends—it decreases in the direction of the propagating surface wave and increases with power.

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Section: Theorymentioning

confidence: 95%

Absolute measurements of the continuum radiation to determine the electron density in a microwave-induced argon plasma

Iordanova¹,

Vries²,

Guillemier³

et al. 2007

J. Phys. D: Appl. Phys.

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“…As the calculation of the integral in equation ( 1) is very time consuming, a number of approximation equations have been proposed, see, e.g. [41,42] where two equations for the lowest and highest limits of equation (1) were tested. In contrast to works [40,41], here all the contributions from ε ε , ea ei ff , and ε ei fb were considered, and the integral in equation ( 1)…”

Section: Bremsstrahlung Continuum Due To Electron-atom Electron-ion F...mentioning

confidence: 99%

Characterization of a planar 8 mm atmospheric pressure wide radiofrequency plasma source by spectroscopy techniques

Nikiforov

Ionita

Dinescu

et al. 2015

Plasma Phys. Control. Fusion

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Classification numbers: PACS: 52.70.Kz, 52.80.TnAtmospheric pressure planar RF 13.56 MHz discharge in Ar gas generated in long gap is investigated. The discharge operation with and without dielectric barrier on the electrodes is studied as a function of the applied power and gas flow. The source afterglow is characterized and analyzed for possible large scale biomedical applications where low gas temperature is required. The discharge is studied by relative and absolute emission spectroscopy. The gas temperature as low as 330±50 K is determined from rotationalvibrational band of OH emission. The absolute value of the discharge continuum irradiation is used to determine the electron density and the electron temperature. The electron-atom and electron-ion contributions to the Bremsstrahlung radiation are calculated and compared with measured spectra. The electron density of 1.91×10 20 m -3 and electron temperature of 1.750.25 eV are measured in the discharge without dielectric barrier. It is found that presence of the dielectric has negligible effect on electron temperature whereas electron number density is almost 6 times lower in the discharge with dielectric barrier.

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“…To solve this problem, a twotemperature model was usually suggested. 35,36 Essentially, more comprehensive characteristic investigation of plasma window provides basis for more windowless sealing applications. And the simulation model will be reliable for optimization and innovation of plasma window's design.…”

Section: Discussionmentioning

confidence: 99%

Quantitative characterization of arc discharge as vacuum interface

Huang

Wang

et al. 2014

Physics of Plasmas

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An arc discharge with channel diameters of 3 mm and 6 mm and lengths between 30 mm and 60 mm was experimentally investigated for its potential to function as plasma window, i.e., interface vacuum regions of different pressures. Electron temperature of the plasma channel measured spectroscopically varied in the range of 7000 K to 15 000 K, increasing with discharge current while decreasing with gas flow rate. That plasma window had a slightly positive I-V characteristics over the whole range of investigated current 30 A-70 A. Measurements of pressure separation capability, which were determined by input current, gas flow rate, discharge channel diameter, and length, were well explained by viscosity effect and "thermal-block" effect. The experimental results of global parameters including temperature, gas flow rate, and voltage had a good agreement with the simulation results calculated by an axis-symmetry Fluent-based magneto-hydrodynamic model. V C 2014 AIP Publishing LLC. [http://dx.

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Modelling of a pinched cascaded arc light source using argon

Cited by 8 publications

References 39 publications

Absolute measurements of the continuum radiation to determine the electron density in a microwave-induced argon plasma

Absolute measurements of the continuum radiation to determine the electron density in a microwave-induced argon plasma

Characterization of a planar 8 mm atmospheric pressure wide radiofrequency plasma source by spectroscopy techniques

Quantitative characterization of arc discharge as vacuum interface

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