In plasma physics, the Lundquist number (denoted by ) is the dimensionless ratio of an Alfvén wave crossing timescale to a resistive diffusion timescale. In SI units, it is given bywhere is a typical length scale, is the permeability of free space, is the Alfvén speed for a plasma with magnetic field , density , ion mass and is the plasma resistivity. High Lundquist numbers indicate highly conducting plasmas, while low Lundquist numbers indicate more resistive plasmas.

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  • In plasma physics, the Lundquist number (denoted by ) is the dimensionless ratio of an Alfvén wave crossing timescale to a resistive diffusion timescale. In SI units, it is given bywhere is a typical length scale, is the permeability of free space, is the Alfvén speed for a plasma with magnetic field , density , ion mass and is the plasma resistivity. High Lundquist numbers indicate highly conducting plasmas, while low Lundquist numbers indicate more resistive plasmas. Laboratory plasma experiments typically have Lundquist numbers between , while in astrophysical situations the Lundquist number can be greater than . Considerations of Lundquist number are especially important in magnetic reconnection.
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  • In plasma physics, the Lundquist number (denoted by ) is the dimensionless ratio of an Alfvén wave crossing timescale to a resistive diffusion timescale. In SI units, it is given bywhere is a typical length scale, is the permeability of free space, is the Alfvén speed for a plasma with magnetic field , density , ion mass and is the plasma resistivity. High Lundquist numbers indicate highly conducting plasmas, while low Lundquist numbers indicate more resistive plasmas.
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  • Nombre de Lundquist
  • Lundquist number
  • Número de Lundquist
  • Число Лундквиста
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