Spectroscopic Studies of the Charge Transfer Reactions He(+) + Hg Yields He + (Hg(+))* and He2(+) + N2 yields 2He + (N2(+))* at Thermal Energy
Scientific journal article
PITTSBURGH UNIV PA SPACE RESEARCH COORDINATION CENTER
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The reactions He Hg yields He Hg and He2 N2 yields 2He N2 have been studied at thermal energy in a drift tube-mass spectrometer apparatus fitted with a sapphire window for observing the light emitted from the electronically excited ions. For the first reaction, over the wavelength range 300-900 nm, the only emissions observed from the Hg product ions are the 614.9 nm and 794.4 nm transitions, in approximately equal amounts. This equal branching in the case of reaction paths having substantially different energy defects, delta E Infinity 0.27 and 0.72 eV, respectively, is not explained by present theoretical models of the charge transfer process. For the second reaction, the emissions observed from the N2 product ions are from the first negative transition the most intense lines observed and their corresponding vibrational levels are 391.4 nm 0,0 427.8 nm 0,1, 470.9 nm 0,2, 522.8 nm 0,3 and 358.2 nm 1,0. The strongest of these lines is the 391.4 nm transition, with only a small intensity suggesting that undistorted Franck-Condon factors control the N2 excitation-ionization during the charge transfer.
- Lasers and Masers
- Quantum Theory and Relativity