Developmental Aspects of Microwave–Plasma Interaction Experiments: Phase-1
| Autor: | V. P. Anitha, Priyavandana J. Rathod, Raj Singh, D. V. Giri |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Physics Permittivity Nuclear and High Energy Physics business.industry Electrical engineering Order (ring theory) 020206 networking & telecommunications 02 engineering and technology Electron Plasma Condensed Matter Physics 01 natural sciences symbols.namesake Electric field 0103 physical sciences Boltzmann constant 0202 electrical engineering electronic engineering information engineering symbols Electron temperature Atomic physics business Microwave |
| Zdroj: | IEEE Transactions on Plasma Science. 44:2226-2231 |
| ISSN: | 1939-9375 0093-3813 |
| DOI: | 10.1109/tps.2016.2552643 |
| Popis: | An experimental system, SYstem for Microwave PLasma Experiments (SYMPLE), is being developed in order to investigate the physics of linear and nonlinear interaction of a high-power microwave (HPM) with an overdense plasma (plasma frequency $f_{p} \,\, >$ microwave frequency $f_{\mu })$ . The physics of interaction has implications in inertial fusion. The developmental task is taken up in two phases: Phase-1 using moderate microwave power ( $\sim 3$ MW), satisfying the condition ${\scriptstyle{\raise2pt\hbox{$\scriptscriptstyle1$}\mkern-4mu/\mkern-2mu{\scriptscriptstyle 2}}}\varepsilon _{\textrm {o}}\textrm {E}_{\mu }^{2}/\textrm {n}_{\textrm {e}}\, \textrm {kT}_{\textrm {e}} \sim 1$ and Phase-2 involving HPM sources of much higher power. Here, $E_{\mu }$ is the microwave electric field, $n_{e}$ the plasma electron density, $T_{e}$ the electron temperature, $m$ the electron mass, $\varepsilon _{o}$ is the free space permittivity, and $k$ is the Boltzmann constant. The Phase-1 system consists of a pulsed ( $5~\mu \text{s}$ ), $S$ -band magnetron (3 MW, 3 GHz) coupled to a pulsed ( $100~\mu \text{s}$ ) washer-gun plasma ( $n_{e} \sim 1\times 10^{18}/\text{m}^{3})$ . The tasks associated with interfacing of the magnetron and plasma have involved the indigenous design and development of different subsystems, each satisfying the specific technical requisites of the Phase-1 system. These subsystems include a washer-gun plasma ( $n_{e} \sim 1\times 10^{18}/\text{m}^{3})$ driven by a pulse forming network, a line-type modulator (52-KV 120-A, 5- $\mu \text{s}$ pulsewidth, $\sim 450$ -ns rise time) that drives the $S$ -band magnetron, an HPM–plasma coupling system, and an HPM TE10 – TM01 mode converter. The developmental aspects of the subsystems form the subject of this paper. |
| Databáze: | OpenAIRE |
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