Current distribution and plasma properties in injectors for electrothermal-chemical launch

Critical parameters, thermodynamic functions, and shock Hugoniot of aluminum fluid at high energy density

“…These two explanatory figures are generated, ignoring the photon gas, using n=0. 5. The pressure appears to behave ideally at low Page17 densities and/or high temperatures as expected.…”

“…Aluminum plasma is an example of such strongly coupled systems which are generated over a wide range of densities and temperatures in many of such high-energy-density applications stimulating a continuous need to study and investigate the properties of these plasmas. The need for accurate prediction of the properties of aluminum (Al) plasma over a wide region of the density-temperature (-T) phase space is particularly augmented by the growth of interest in new launch technologies [4,5], pulsed power machines designed to produce inertial confinement fusion plasmas [3,6] and for being a common component in shock experiments and space type vehicles. Such predictions for aluminum plasmas necessitate information about the population densities of different plasma species (neutral, excited, ionized, etc.)…”

Formation of plasma around wire fragments created by electrically exploded copper wire

“…It has been argued above that current is being diverted around the condensed fragments of an electrically exploding wire through the seemingly higher resistance plasma. This phenomenon is also reported on work conducted for the electric armour programme [7], for aircraft radome lightning segmented divertor strips [5,20] and segmented strip ETC igniters [21]. Arguments are presented in [7,21] that the effect is essentially geometrical, limited to an aspect ratio of gaps and fragments of about unity.…”

“…This phenomenon is also reported on work conducted for the electric armour programme [7], for aircraft radome lightning segmented divertor strips [5,20] and segmented strip ETC igniters [21]. Arguments are presented in [7,21] that the effect is essentially geometrical, limited to an aspect ratio of gaps and fragments of about unity. In the work described here, the fragment length is at least ten times that of the gap length.…”

Formation of thin films using pulse power and electromagnetic repulsion forces

“…There have been many experimental studies [1][2][3][4][5][6][7][8][9][10][11] and numerical calculations on the physics of electrically exploding wires [12][13][14][15][16][17][18][19] as well as studies for various applications including electrothermal-chemical guns, [20][21][22] electromagnetic rail guns, 23 fuses, 24 and Z-pinches for x-ray generators. Thin metal films with strong adhesion to plastic surfaces were formed using a metal plasma produced by applying pulse power.…”