论文信息 - Ionization cross‐sections for the production of positive ions from H2O by electron impact

Ionization cross‐sections for the production of positive ions from H2O by electron impact

Cross-section values for the direct and dissociative ionization of H2O by electron impact have been measured and compared with previously published data. The present measurements have been carried out from thresholds to 1 keV by utilizing a crossed electron beam and molecular beam collision geometry and an improved ion extraction technique. To the best of our knowledge, the present results for the double ionization of H2O are the first measurements.

[1] J. Kistemaker,et al. Gross‐ and Partial‐Ionization Cross Sections for Electrons on Water Vapor in the Energy Range 0.1–20 keV , 1966 .

[2] William J. Meath,et al. Cross sections for the direct and dissociative ionisation of NH3, H2O and H2S by electron impact , 1987 .

[3] F. Egger,et al. Cross-section for single ionization of H2O and D2O by electron impact from threshold up to 170 eV , 1976 .

[4] S. Srivastava,et al. Cross sections for direct and dissociative ionization of NH3 and CS2 by electron impact , 1991 .

[5] O. Orient,et al. Electron impact ionisation of H2O, CO, CO2 and CH4 , 1987 .

[6] W. J. Meath,et al. Dissociative ionization of NH3 and H2O molecules by electron impact , 1989 .

[7] Rudd,et al. Angular and energy dependence of cross sections for ejection of electrons from water vapor. I. 50-2000-eV electron impact. , 1986, Physical review. A, General physics.

[8] E. Krishnakumar,et al. Ionisation cross sections of rare-gas atoms by electron impact , 1988 .

[9] N. Djurić,et al. H2O and D2O total ionization cross-sections by electron impact , 1988 .

[10] D. Shemansky,et al. Detection of the hydroxyl radical in the Saturn magnetosphere , 1993, Nature.

[11] S. Srivastava,et al. Electron impact ionization and attachment cross sections for H2S , 1993 .

[12] E. Krishnakumar,et al. Cross sections for the production of N2(+), N(+) + N2(2+) and N(2+) by electron impact on N2 , 1990 .