SPIREs: A Finite-Difference Frequency-Domain electromagnetic solver for inhomogeneous magnetized plasma cylinders

Melazzi, Davide; Curreli, Davide; Manente, Marco; Carlsson, Johan; Pavarin, Daniele

doi:10.1016/j.cpc.2012.01.020

Cited by 30 publications

(22 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure shows the collisional absorbed power as a function of plasma density for specific plasma parameters (i.e., P = 1 mTorr, B 0 = 50 G, and T e = 3 eV). We found good agreement between our obtained results with those presented by Melazzi et al As evidenced by the curves shown in Figure , the absorbed power increases and the peak value occurs at a lower plasma density as the excitation frequency increases from 6.78 to 27.12 MHz. This can be explained according to the skin depth as described by Chen:

d_{s} = ((), \frac{c}{ω_{p}}) {[\frac{2 ((), 1 + δ^{2})}{1 + {(1 + δ^{2})}^{\frac{1}{2}}}]}^{\frac{1}{2}},

where δ = v / ω and c / ω p is the collisionless skin depth.…”

Section: Resultssupporting

confidence: 91%

The effect of Landau damping on the power absorption in a helicon plasma source driven by an m = 0 antenna

Soltani

Habibi

Zakeri-Khatir

2017

Contrib. Plasma Phys

View full text Add to dashboard Cite

Landau damping is one of the most important mechanisms for the description of wave dissipation and efficient power absorption in helicon plasma sources. Numerical analysis using the MATLAB code is carried out to determine the dispersion relation of the helicon plasma and calculate the axial wavenumber for m = 0 mode in both Trivelpiece-Gould (TG) and helicon plasma density regimes. In addition, the MATLAB code is coupled to the CST Microwave Studio (Ms) code to examine the collisionless power absorption due to Landau damping in a helicon source driven by a single-loop antenna. The effects of some parameters, such as the electron temperature (T e ), the external magnetic field strength (B 0 ), and the antenna excitation frequency (f ), on the Landau damping are investigated for electron density ranging from 1 × 10 16 to 1 × 10 20 m -3 . Our findings indicate that, for a given set of plasma parameters, Landau damping shows different behaviors on the power deposition. For instance, increasing the excitation frequency has considerable effect on the collisionless absorbed power in the range of values from 3 × 10 17 to 3 × 10 19 m -3 of the electron density. Also, for f = 13.56 MHz, T e = 3 eV, and B 0 = 100 G, there is a specific electron density (i.e., n e = 2 × 10 18 m -3 ) beyond which increasing the electron temperature causes a decrease in the collisionless power absorption; the opposite is true for lower plasma density (i.e., n e < 2 × 10 18 m -3 ). Furthermore, the obtained results show that Landau damping has considerable effect on the power absorption in the helicon source at low pressure regime (e.g., P = 1 mTorr) with low external magnetic field strength (e.g., B 0 < 200 G).

show abstract

d_{s} = ((), \frac{c}{ω_{p}}) {[\frac{2 ((), 1 + δ^{2})}{1 + {(1 + δ^{2})}^{\frac{1}{2}}}]}^{\frac{1}{2}},

where δ = v / ω and c / ω p is the collisionless skin depth.…”

Section: Resultssupporting

confidence: 91%

The effect of Landau damping on the power absorption in a helicon plasma source driven by an m = 0 antenna

Soltani

Habibi

Zakeri-Khatir

2017

Contrib. Plasma Phys

View full text Add to dashboard Cite

show abstract

“…[54,55] on HP performance and wave structures excited by many types of antenna in uniform and non-uniform density profiles. Simulation codes have been also developed, such as ANTENA2 [56,57]; HELIC [58][59][60], which is an open-source code [61]; and, more recently, SPIREs [62] and ADAMANT [63].…”

Section: Highly Efficient Plasma Production and Its Mechanismmentioning

confidence: 99%

Helicon high-density plasma sources: physics and applications

Shinohara

2018

Advances in Physics: X

View full text Add to dashboard Cite

Helicon high-density (up to ~10 13 cm −3) plasma sources using a radio frequency wave in the presence of a magnetic field under a low pressure are very promising for various application fields owing to the flexibility of external operational parameters. In addition, these sources have interesting inherent characteristics. Herein, the basic features of helicon wave plasmas including production mechanisms are briefly described, focusing on some similarities to other fields. Examples of specific helicon sources are also introduced. Then, an extensive variety of applications ranging from fundamental to practical applications, which are very influential for further development in each field, are introduced, emphasizing crucial points.

show abstract

“…The percentage proportion of S h and S N/2 is expressed by Eq. (19). Usually, the number of harmonics (i.e.…”

Section: Analysis Of the Order And Energy Densitymentioning

confidence: 99%

“…Frequency-domain finite difference (FDFD) method [18,19], a numerical method in frequency domain, has been widely used in the electromagnetic fields and shown its clear advantage over the time-domain numerical method in solving the periodic problem in this field or calculating the frequency characteristics of the magnetic field. Xie et al [20] developed a FDFD model of pipe-embedded building envelope and calculated the frequency thermal characteristics of this structure by using this FDFD model.…”

Section: Introductionmentioning

confidence: 99%

Experimental validation of frequency-domain finite-difference model of active pipe-embedded building envelope in time domain by using Fourier series analysis

Xie

et al. 2015

Energy and Buildings

View full text Add to dashboard Cite

a b s t r a c tActive pipe-embedded building envelope is a new kind of external building wall or roof which usually has pipes embedded in it to let water circulate in these pipes for heat transfer. This structure may effectively intercept the heat/coolth from the ambient environment to indoor space and provide extra space conditioning for the indoor space. Frequency-domain finite-difference (FDFD) model can predict the frequency thermal response of active pipe-embedded building envelope directly and provide some important guidelines for system control and system sizing. This paper presents the experimental validation of this model in time domain by using Fourier series analysis. An experiment test rig was developed for the thermal response measurements of the pipe-embedded building envelope under pre-defined conditions. First, the measured time series of surface temperatures are transformed into complex Fourier series by using Discrete Fourier Transform and applied into the FDFD model as the boundary condition for calculation. Then, the calculated frequency thermal responses by FDFD model can be easily transformed into time series by using Inverse Discrete Fourier Transform. Finally, the time-domain thermal responses of FDFD model are obtained. The results show that the calculated time-domain thermal responses of the active pipe-embedded building envelope by using FDFD model agree well with the experimental measurements.

show abstract

SPIREs: A Finite-Difference Frequency-Domain electromagnetic solver for inhomogeneous magnetized plasma cylinders

Cited by 30 publications

References 28 publications

The effect of Landau damping on the power absorption in a helicon plasma source driven by an m = 0 antenna

The effect of Landau damping on the power absorption in a helicon plasma source driven by an m = 0 antenna

Helicon high-density plasma sources: physics and applications

Experimental validation of frequency-domain finite-difference model of active pipe-embedded building envelope in time domain by using Fourier series analysis

Contact Info

Product

Resources

About