Analytic expression for electrical resistivity in near-solid density, laser-produced plasmas

Intense, subpicosecond lasers are capable of producing plasmas at or near solid density with temperatures of down to a few eV. Such a plasma is strongly coupled with respect to particle-particle interactions and the use of standard, Spitzer descriptions of plasma processes is not valid. Here we develop an expression for the electrical resistivity, p, in such a plasma. Since r governs laser light absorption via inverse bremsstrahlung, it must be calculated with some care to ensure that modeling of the plasma is correct.