plasma-facing material

Tungsten–potassium: a promising plasma

Tungsten–potassium (potassium-doped tungsten or WK), initially known from the electric filament industry, is a promising plasma-facing material (PFM) in future fusion facilities like International Thermonuclear Experimental Reactor (ITER). However, the brittle nature of W and irradiation-induced defects of WK materials may result in a risk of deuterium–tritium reaction failure in fusion

Plasma

In nuclear fusion power research, the plasma-facing material (or materials) (PFM) is any material used to construct the plasma-facing components (PFC), those components exposed to the plasma within which nuclear fusion occurs, and particularly the material used for the lining or first wall of the reactor vessel.

Effect of high

2016/12/23The goal of this work is to assess Ta as a potential plasma-facing material for future fusion reactors in terms of its response to high-flux, low-energy He+ ion irradiation. Ta samples were irradiated with 100 eV He+ ions at various fluences up to 3.5 1025 ions m

Lithium research as a plasma facing component material at the

of energetic plasma flows in the DEVeX facility. A thin lithium film, which is deposited in-situ by a DC magnetron, is used as the plasma facing material though any material can be used to sputter coat the target. The key components of the DEVeX facility are

16th International Conference on Plasma

The performances of fusion devices and of future fusion power plants strongly depend on the plasma-facing materials and components. Resistance to heat and particle loads, compatibility in plasma operations, thermo-mechanical properties, as well as the response to neutron irradiation are critical parameters which need to be understood and tailored from atomistic to component levels.

Fundamentals of Plasma

In addition, understanding the relevant plasma-facing component issues, which vary with respect to fusion device design, is also lacking in fusion material's RD efforts. For example, the differences of plasma edge conditions for first wall versus divertor fusion materials are quite different.

16th International Conference on Plasma

The performances of fusion devices and of future fusion power plants strongly depend on the plasma-facing materials and components. Resistance to heat and particle loads, compatibility in plasma operations, thermo-mechanical properties, as well as the response to neutron irradiation are critical parameters which need to be understood and tailored from atomistic to component levels.

4.17 – Tungsten as a Plasma

As the most promising plasma-facing material for actual and future nuclear fusion devices, tungsten has to face and withstand a broad variety of severe operational conditions. These comprise high transient thermal loads, neutron irradiation-induced material degradation and transmutation, hydrogen and helium attack at the plasma-facing surface, and thermal fatigue under steady state heat fluxes

Erosion and Deposition of Tungsten as Plasma Facing Material at

Erosion and Deposition of Tungsten as Plasma Facing Material at the Central Column Heat Shield of ASDEX Upgrade X. Gong*,a, K. Kriegerb, J. Rothb, H. Maierb, R.Neub, V. Rohdeb and ASDEX Upgrade Teamb aInstitute of Plasma Physics, Academia Sinica, Hefei, Anhui, 230031 China

Liquid Metals as Plasma

article{osti_1389595, title = {Liquid Metals as Plasma-facing Materials for Fusion Energy Systems: From Atoms to Tokamaks}, author = {Stone, Howard A. and Koel, Bruce E. and Bernasek, Steven L. and Carter, Emily A. and Debenedetti, Pablo G. and Panagiotopoulos, Athanassios Z.}, abstractNote = {The objective of our studies was to advance our fundamental understanding of liquid metals as plasma

Assessment of Material Properties of Tungsten as Plasma Facing Material

extend from the plasma facing surface down to the CuCrZr-coolant tube. For a possible improvement on material specification, 5 different tungsten grades manufactured by different companies and by different densification technologies (forging and rolling) are

DESIGN OF PLASMA FACING COMPONENTS FOR THE SST

The Plasma Facing Components (PFC) like Divertors Baffles, Poloidal limiters and Passive stabilizers form the first material boundary around the plasma and hence receive high heat and particle fluxes. The PFC design should ensure efficient heat and particle

Hydrogen Recycling at Plasma Facing Materials

Studies on Tritium Interactions with Plasma Facing Material at the Tritium Process Laboratory Of Jaeri Pages 213-221 Hayashi, T. (et al.) Preview Buy Chapter 25,95 € Tritium Recycling and Inventory in Eroded Debris of Plasma-Facing Materials Pages 223-237

The Tungsten

The plasma-facing materials in fusion reactors will face very extreme servicing condition such as high temperatures, high thermal loads, extreme irradiation conditions induced by high-energy neutron, and high fluences of high-flux and low-energy plasma. Tungsten is considered as the most promising material for plasma-facing components (PFCs) in the magnetic confinement fusion devices, due to

Limitations for tungsten as plasma facing material in the

Plasma-facing materials (PFMs) are directly exposed to the target explosion. They protect the structural material from the irradiation. Thus, a PFM must have excellent structural stability, since severe cracking or mass loss would reduce its protective role.

DTA: Developing the next generation of plasma

2021/1/19Tungsten (W) is the primary material of choice to be used for plasma-facing components (first wall and divertor) because of its superior high-temperature properties, neutron irradiation resistance and low retention of implanted tritium.

Experimental simulation of materials degradation of plasma

Keywords: plasma-facing components (PFCs), ITER, tungsten, surface erosion (Some figures may appear in colour only in the online journal) 1. Introduction Currently extensive laboratory-scale studies are undergoing to investigate the erosion and degradation of

Limitations for tungsten as plasma facing material in the

Plasma-facing materials (PFMs) are directly exposed to the target explosion. They protect the structural material from the irradiation. Thus, a PFM must have excellent structural stability, since severe cracking or mass loss would reduce its protective role.

Investigations on tungsten heavy alloys for use as plasma facing material

An alternative solution for tungsten as a plasma facing material could be the use of W heavy alloys as they are produced com-mercially by several companies. They consist of up to 97% W and Ni/Fe (or Ni/Cu) admixtures, they are readily machinable and

Lithium research as a plasma facing component material at the

of energetic plasma flows in the DEVeX facility. A thin lithium film, which is deposited in-situ by a DC magnetron, is used as the plasma facing material though any material can be used to sputter coat the target. The key components of the DEVeX facility are

Lithium research as a plasma facing component material at the

of energetic plasma flows in the DEVeX facility. A thin lithium film, which is deposited in-situ by a DC magnetron, is used as the plasma facing material though any material can be used to sputter coat the target. The key components of the DEVeX facility are

DESIGN OF PLASMA FACING COMPONENTS FOR THE SST

The Plasma Facing Components (PFC) like Divertors Baffles, Poloidal limiters and Passive stabilizers form the first material boundary around the plasma and hence receive high heat and particle fluxes. The PFC design should ensure efficient heat and particle

DESIGN OF PLASMA FACING COMPONENTS FOR THE SST

The Plasma Facing Components (PFC) like Divertors Baffles, Poloidal limiters and Passive stabilizers form the first material boundary around the plasma and hence receive high heat and particle fluxes. The PFC design should ensure efficient heat and particle

Plasma Facing Component

Abstract: In Plasma Facing Components (PFCs) for nuclear fusion reactors, the protective material, carbon based or tungsten, has to be joined to the copper alloy heat sink for optimum heat transfer. High temperature vacuum brazing is a possible joining process as long as a proper interlayer is introduced to mitigate the residual stresses due to the mismatch of thermal expansion coefficient (CTE).

Assessment of Material Properties of Tungsten as Plasma Facing Material

extend from the plasma facing surface down to the CuCrZr-coolant tube. For a possible improvement on material specification, 5 different tungsten grades manufactured by different companies and by different densification technologies (forging and rolling) are

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