摘要
This study has measured the density-normalized effective ionization coefficients （α-η）/N, the electron drift velocity V e and the diffusion coefficient D L in nitrous oxide （N_2O） using a pulsed Townsend technique. The range of the overall density-normalized electric field strength E/N is from 100 Td to 400 Td （1 Td=10 17 V·cm2）. From the above plots of （α-η）/N, we have derived the limiting field strength, （E/N） lim ≈ 150 Td, which is the value of E/N at which （α-η）/N=0.
This study has measured the density-normalized effective ionization coefficients （α-η）/N, the electron drift velocity V e and the diffusion coefficient D L in nitrous oxide （N_2O） using a pulsed Townsend technique. The range of the overall density-normalized electric field strength E/N is from 100 Td to 400 Td （1 Td=10 17 V·cm2）. From the above plots of （α-η）/N, we have derived the limiting field strength, （E/N） lim ≈ 150 Td, which is the value of E/N at which （α-η）/N=0.
基金
supported by National Natural Science Foundation of China (No.51177101)
