By Professor Ratko K. Janev, William D. Langer, Dr. Douglass E. Post Jr., Dr. Kenneth Evans Jr. (auth.)
Atomic and molecular tactics play a massive position in laboratory and astrophysical plasmas for quite a lot of stipulations, and ensure, partly, their electric, shipping, thermal, and radiation homes. The learn of those and different plasma houses calls for an information of the pass sections, response price coefficients, and inelastic strength transfers for a number of collisional reactions. during this assessment, we offer quantitative information regarding crucial collision procedures taking place in hy drogen, helium, and hydrogen-helium plasmas within the temperature variety from zero. 1 eV to twenty keY. the fabric awarded here's in accordance with released atomic and molecular collision information, theoretical calculations, and appro priate extrapolation and interpolation systems. This evaluation offers the houses of every response, graphs of the go sections and response expense coeffiCients, and the coefficients of analytical matches for those amounts. We current this data in a sort that might let researchers who're now not specialists in atomic physics to exploit the information simply. The authors thank their colleagues on the Princeton Plasma Physics Laboratory and within the atomic physics neighborhood who've made many beneficial feedback for the choice and presentation o. f t. he fabric. We gratefully recognize the superb technical advice of Elizabeth Carey for the typing, and Bernie Giehl for the drafting. This paintings was once supported partially by way of the U. S. division of strength agreement No. DE-AC02-76-CHO-3073. Princeton, united states R. ok. Janev W. D. Langer September, 1987 ok. Evans, Jr. , D. E.
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Extra resources for Elementary Processes in Hydrogen-Helium Plasmas: Cross Sections and Reaction Rate Coefficients
14 -6 10 10 e+H2 (Xl Ig)-e+ H;(SI I~ 2pcr) en ....... E ", - 168 Co> / 1\ . > b v f 169 II -10 10 I -II 10 - '- _I 10 . , E Co> " ,, , , ,, ··· ···· ·· N b , , . 4 eV. Cross Section: E Et h - 200 eV: a exc (c 1n) u Reference: E a DWA exc Mu-Tao et a1. (1982) 200 - 2 x 10 4 eV: a B se Comments: (1) DWA in the region below The distorted wave approximation cross section a exc 100 eV is consistent with the recent experimental data of Shemansky et al. (1985), and Khakoo and Trajmar (1986) to within 25%.
56 x 10- 6 T- 1 • 5 exp(-Sn) (1. 32 Sn Vriens and Smeets (1980) Mean Energy of Ejected Electrons:
1 eV. 37 eV,