Elementary Processes in Hydrogen-Helium Plasmas: Cross - download pdf or read online

u 1\ b v 10 / 9 -10 10 -II 10 _I 10 10 / , ·· ··· · · ·· 1 . ...... .. 16 b 17 -18 10 ... TorE(eV) E u ... 10 2 - N ..... 6 eV. 85 eV. 6 eV. 85 eV. Equipartition of dissociation energy is assumed. (3) The state (2pou; n~AIQ21nu) is an autodissociating state. = I-~ I-- ~ - en ....... " I e + H2(X ' ~g)-e + H~(2pCTU; n l A Q2'IIu)~ ~ ~ -e+H*(2p)+ H*(2s) 10 '6 108 N u ,...

Ion); E . 55 n 2 3 4 n n n Vriens and Smeets (1980) The figures show two examples: (a) e + H{l) + e + H*(3), and (b) e + H*(2) + e + H*(3); their fitting coefficients for are given in Sect. 2. ~c{n+m) has been derived accuracy is claimed to be within ± 30%. dipo1e- allowed transitions, (n,l) + (m,l±l). semiempirica1ly and its It can also be applied for An analytic expression for the reaction rate coefficient a~~c{n+m) has been also derived by Vriens and Smeets (1980). (2) The cross section for e + H{l) + e + H*(3) excitation agrees to within 20% with recent quanta1 calculations (see Callaway and McDowell 1983).

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Elementary Processes in Hydrogen-Helium Plasmas: Cross Sections and Reaction Rate Coefficients by Professor Ratko K. Janev, William D. Langer, Dr. Douglass E. Post Jr., Dr. Kenneth Evans Jr. (auth.)


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