Numerical studies have been conducted using the Leemodel code to compute the neutron yield (Yn)

of the PF1000 plasma focus device as a function of operating gas pressure (P). The result is compared

with the available experimental data. The operating gas Deuterium (D) is substituted with Deuterium-

Tritium (D-T) (1:1) gas mixture in the numerical studies and then the Yn is investigated with the

function of P.Associated plasma dynamic properties such as axial velocity va, radial shock front speed

vs, piston speed vp, andmaximumpinch temperature Tpinch (max) are studied and correlations of the

parameters with the pressure variation are established. Relevant plasma focus properties such as peak

discharge current Ipeak, pinch current Ipinch, ion density ni, and energy input into the pinch EINP are

discussed as functions of pressure thus provide correlation of Yn with other relevant plasma focus

properties over the operating gas pressure range. The neutron yield performance of the D-T gas

mixture is compared to that of theDgas and the optimum gas pressure for the highest neutron yield is

identified.