Construct · 1 fields · 1 citations

pinching: a standalone construct

One name. One construct. A landmark on the map.

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pinching1 CONSTRUCTPinch effectBENNETT · 1934

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Plasma physics

A current squeezes its own plasma

In plasma physics, the pinch (or pinch effect) is the self-compression of a current-carrying plasma or conductor: the magnetic field produced by the current exerts an inward Lorentz force on the moving charges, squeezing the column toward its axis. Bennett's 1934 Magnetically self-focussing streams derived the equilibrium between this magnetic pressure and the plasma's outward kinetic pressure, the result now called the Bennett pinch. The referent is a magnetohydrodynamic confinement phenomenon central to fusion-device designs, unrelated to a gardener nipping out a shoot tip.[1]

Unit
The equilibrium between magnetic pinch pressure and plasma pressure
Recovery means
Not applicable
Measured by
Characterized by the Bennett pinch relation linking current, density, and temperature at equilibrium

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Nearby constructs

axis1 fields · 1 citationsanchor · a standalone constructbranching3 fields · 4 citationsjingle · one word, three constructscolumn1 fields · 2 citationsanchor · a standalone construct

References

  1. Bennett, W. H. (1934). Magnetically self-focussing streams. Physical Review, 45(12), 890–897. https://doi.org/10.1103/PhysRev.45.890

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