Electron collision cross section of mercury is presented in this report. The new collision cross section set is based on the set summarized by Hayashi[1]. Only three excitation collision cross sections (6³P₀, 6³P₁, 6³P₂) which are carried out using beam experiment by Hanne[2-4], are employed to the study. Other two excitation cross sections (6¹P₁, 6³D₃) are taken from Hayashi. The momentum transfer cross section and the ionization collision cross section are also taken from Hayashi. A Monte Carlo Simulation (MCS) technique[5] on the electron swarm is provided here for the evaluation of the cross section set. The electron transport characteristic is obtained by the MCS. The calculated electron drift velocity and ionization coefficient are compared with the experimental values. A good agreement is recognized between them over a wide range of E/N.
The MCS code (FFT-PJJ) used in the study was able to decide the position of collision correctly without error and it was described previously[5]. The initial electrons of 1.0×10⁴ emitted from the cathode center were calculated until reaching the anode.
The electron drift velocity and the electron mean energy as a function of E/N are calculated. The electron drift velocity agrees well with the measured values at 520 K reported by Nakamura et al [6] for E/N ≦ 1.5 Td. For E/N ＞ 1.5 Td, the present values are larger than that of Nakamura.
The ionization coefficient α_i/N is calculated by MCS in 200 Td ＜ E/N ＜ 3000 Td. Discrepancy that is smaller than ±6% is found between our present value and experimental value by others.

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