How to ionized plasma?
Answers from top 10 papers
More filters
Papers (10) | Insight |
---|---|
38 Citations | The general approach may be applied to other linear and nonlinear low‐frequency processes in a weakly ionized plasma. |
Thus, it has been suggested that highly ionized and dissociated plasmas are suitable for the surface production of negative ions. | |
40 Citations | Besides the treatment of the different interactions in a partially ionized plasma, this approach allows also for the currents of the heavy particles ions and atoms. |
As such, is is important that even for high temperature plasmas the transition regime between fully ionized and non-ionized plasmas be modeled. | |
9 Citations | Focused on a small sample of matter, the beams will be able to produce a high-density plasma and to permit investigation of interaction processes of heavy ions with hot ionized matter. |
We have found that this method is also limited for strongly ionized plasmas. | |
The single-fluid approach perfectly deals with slow processes in partially ionized plasmas, but fails for time-scales shorter than ion-neutral collision time. | |
We also propose an alternative to reduce the plasma density, based on an electrostatic plasma sheath. | |
24 Citations | This enables one to construct a self-consistent chemical model of partially ionized plasmas, correctly accounting for the close interrelation of charged and neutral components thereof. |
This plasma source is expected to be suitable for large-scale plasma processing. |
Related Questions
How to start up plasma in stellarator?4 answersPlasma start-up in stellarators involves a two-step process. The first step occurs after the turn-on of Electron Cyclotron Resonance Heating (ECRH) power, during which no measurable electron density is detected. The duration of this step depends on the level of injected power. The second step involves gas ionization and plasma expansion, with the density build-up and filling of the vessel volume depending on pressure, gas, and rotational transform. The optimization of plasma breakdown is crucial for successful plasma build-up. Start-up experiments on stellarator devices have shown that the plasma start-up delay time decreases with an increase in ECRH input power, but saturates under low pre-fill neutral gas pressure conditions. The delay time and electron density are both increasing functions of gas pressure. Higher rotational transform leads to faster start-up and higher plasma density. Neutral beam injection alone is not sufficient for plasma start-up in W7-X, and the ratio of beam-plasma interaction length to plasma volume is an essential quantity for successful start-up with neutral beams. Plasma production in stellarators can also be achieved using Ion Cyclotron Range of Frequencies (ICRF) antennas, with the slow wave responsible for plasma production at low densities and Alfvén resonances playing a role at high densities.
What is meant by ionizing food?5 answersIonizing food refers to the process of exposing food to ionizing radiation, such as gamma rays or high-energy electrons, in order to achieve various effects such as reduced storage losses, extended shelf life, and improved safety from parasites and microorganisms. This technology is used to preserve a variety of foods and consumables and has a sound regulatory foundation based on extensive research and verification of its safety. Food irradiation is endorsed by important health organizations and allowed in many countries worldwide. However, there are concerns regarding the potential hazardous effects of irradiated food on health, such as the occurrence of 2-alkylcyclobutanones or free radicals. Despite these concerns, the safety of irradiated products has been confirmed by key international and national organizations. It is important to note that irradiation is not a substitute for comprehensive food safety programs and good food-handling practices.
How is the cold plasma being used in energy drink ?5 answersCold plasma technology has various applications, but there is no specific mention of its use in energy drinks in the provided abstracts.
How to treat wounds with plasma?4 answersCold atmospheric plasma (CAP) has been shown to have antibacterial activity and promote cell proliferation, differentiation, and migration in vitro. CAP can eliminate refractory skin bacteria in vitro and positively affect wound healing in a rat scalding wound model. Direct CAP irradiation of low intensity and short duration did not lead to skin erythema or edema. The use of a combination of a wound-rinsing solution and cold atmospheric plasma has been proposed for treating wounds. Plasma flux treatment has been found to induce anti-inflammatory macrophages and promote the healing process in burn wounds, partly through the decrease in macrophage NF-κB. Plasma flux treatment shows potential for the treatment of burn wounds.
How can plasma be used to convert methane into hydrogen?5 answersPlasma can be used to convert methane into hydrogen through various processes. One approach is the use of atmospheric dielectric barrier discharge (DBD) plasma with catalysts such as 13X zeolite-based catalysts, Pd/13X, and Pd-Ga/13X. Another method involves a two-stage hybrid plasma-thermal system (HPTS), where the plasma stage converts methane into C2H6 and C3H8, which are then further converted into C2H4 and H2 in the thermal stage. Plasma-assisted steam methane reforming (SMR) is another promising approach, where plasma and a Ni-based catalyst are used to increase hydrogen yields. Plasma pyrolysis and plasma catalysis have also been explored, with gliding arc plasma showing high selectivity of acetylene and superior plasma catalytic behavior observed with a 0.1Pd0.5Ag/Al2O3 catalyst. These findings provide insights into the use of plasma for methane conversion to hydrogen, offering potential for efficient and safe hydrogen production.
What are the different methods of plasma-based treatment?5 answersPlasma-based treatment methods include a treatment system with an inductively coupled plasma source and a gas directing arrangement. Another method involves a plasma treatment device with a waveguide unit and a dielectric window. Additionally, a system for exhaust gas remediation utilizes a plasma reactor with an electrode that forms a plasma from the exhaust gas. A plasma treatment method involves generating a planar plasma in a chamber and adjusting the location of an observation lens to determine the effective influence region of the plasma. Medical devices for generating an aerosol and plasma may include a nebulizer and at least one electrode.