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Measurement Of Thermal-Energy Charge-Transfer Rate Coefficient Of Mo6+ And Argon, Victor H.S. Kwong, Z. Fang, Yingtao Jiang, T. T. Gibbons, L. D. Gardner
Measurement Of Thermal-Energy Charge-Transfer Rate Coefficient Of Mo6+ And Argon, Victor H.S. Kwong, Z. Fang, Yingtao Jiang, T. T. Gibbons, L. D. Gardner
Electrical & Computer Engineering Faculty Research
The charge-transfer rate coefficient of Mo6+ and argon has been measured at mean ion energies of 8.8 and 1.4 eV using a laser-ablation ion source and an ion trap. The rate coefficient deduced from these measurements is 1.02(0.10)×10-10 cm3 s-1 and appears to be independent of the mean ion energy at this energy range. However, the measured value is an order of magnitude smaller than the Langevin rate coefficient.
Experimental Apparatus For Production, Cooling, And Storing Multiply Charged Ions For Charge-Transfer Measurements, Victor H. S. Kwong, T. T. Gibbons, Z. Fang, Jinhua Jiang, H. Knocke, Yingtao Jiang, B. Ruger, Su-Ching Huang, E. Braganza, W. Clark, L. D. Gardner
Experimental Apparatus For Production, Cooling, And Storing Multiply Charged Ions For Charge-Transfer Measurements, Victor H. S. Kwong, T. T. Gibbons, Z. Fang, Jinhua Jiang, H. Knocke, Yingtao Jiang, B. Ruger, Su-Ching Huang, E. Braganza, W. Clark, L. D. Gardner
Electrical & Computer Engineering Faculty Research
A novel method is described that combines the production of ions by laser ablation with an ion‐trap technique for the measurement of thermal‐energy charge‐transfer rates of multiply charged ions and neutrals. The charge‐transfer rate is determined by measuring the rate of loss of stored ions from the trap. Verification of the calibration of the apparatus is demonstrated through investigation of charge transfer of N2 and N2+, which has been studied by another group. We also have made the first measurement on the thermal‐energy charge‐transfer coefficient of Ar and W2+. The rate coefficient is 0.99(0.22)×10−11 …