Cross sections for the direct and dissociative ionisation of NH3, H2O and H2S by electron impact
作者： S P Khare , W J Meath
DOI: 10.1088/0022-3700/20/9/021
关键词: Ionization 、 Atomic physics 、 Ion 、 Molecule 、 Physics 、 Oscillator strength 、 Electron ionization
摘要: The semi-empirical approach of Jain and Khare (1976-7) which uses oscillator strength data as input, has been utilised to obtain the first theoretical cross sections for direct dissociative ionisation NH3, H2O H2S molecules by electron impact energies varying from threshold 10 keV. production major ions, namely NH3+, NH2+, H2O+, minor ion OH+, total are in satisfactory agreement with a number experimental values. For ions NH+, O+ H+, theory underestimates sections. produced no results available comparison.
sci-hub.se 参考文章(22)
D K Jain, S P Khare, Ionizing collisions of electrons with CO2, CO, H2O, CH4 and NH3 Journal of Physics B. ,vol. 9, pp. 1429- 1438 ,(1976) , 10.1088/0022-3700/9/8/023
W F Miller, R L Platzman, On the Theory of the Inelastic Scattering of Electrons by Helium Atoms Proceedings of the Physical Society. Section A. ,vol. 70, pp. 299- 303 ,(1957) , 10.1088/0370-1298/70/4/308
G. D. Zeiss, William J. Meath, J. C. F. MacDonald, D. J. Dawson, Dipole spectrum of water vapor and its relation to the energy loss of fast-charged particles. Radiation Research. ,vol. 63, pp. 64- 82 ,(1975) , 10.2307/3574308
Y.D. Kaushik, S.P. Khare, A. Kumar, Inelastic collisions of protons with water vapour Physica B+C. ,vol. 106, pp. 128- 134 ,(1981) , 10.1016/0378-4363(81)90021-8
T.D. Mārk, F. Egger, Cross-section for single ionization of H2O and D2O by electron impact from threshold up to 170 eV International Journal of Mass Spectrometry and Ion Physics. ,vol. 20, pp. 89- 99 ,(1976) , 10.1016/0020-7381(76)80035-6
T. D. Märk, F. Egger, M. Cheret, Ionization of ammonia and deuterated ammonia by electron impact from threshold up to 180 eV Journal of Chemical Physics. ,vol. 67, pp. 3795- 3802 ,(1977) , 10.1063/1.435321
C.E. Brion, A. Hamnett, G.R. Wight, M.J. Van der Wiel, Branching ratios and partial oscillator strengths for the photoionization of NH3 in the 15–50 eV region Journal of Electron Spectroscopy and Related Phenomena. ,vol. 12, pp. 323- 334 ,(1977) , 10.1016/0368-2048(77)85083-4
J. Schutten, F. J. de Heer, H. R. Moustafa, A. J. H. Boerboom, J. Kistemaker, Gross‐ and Partial‐Ionization Cross Sections for Electrons on Water Vapor in the Energy Range 0.1–20 keV The Journal of Chemical Physics. ,vol. 44, pp. 3924- 3928 ,(1966) , 10.1063/1.1726553
MITIO INOKUTI, Inelastic Collisions of Fast Charged Particles with Atoms and Molecules-The Bethe Theory Revisited Reviews of Modern Physics. ,vol. 43, pp. 297- 347 ,(1971) , 10.1103/REVMODPHYS.43.297
S.P. Khare, A. Kumar, Energy deposition by protons in molecular nitrogen Physica B-condensed Matter. ,vol. 100, pp. 135- 143 ,(1980) , 10.1016/0378-4363(80)90070-4