ISSN:
0951-4198
Schlagwort(e):
Chemistry
;
Analytical Chemistry and Spectroscopy
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Physik
Notizen:
High-resolution double-charge-transfer spectroscopy has been used to measure the double-electron-capture reactions with CH4. Using kilo electron volt OH+, CI+ and F+ projectile ions it is possible in double-electron-capture reactions with CH4 molecules to populate the ground triplet state of CH42+. The energy of this state relative to the gound state of CH4 is found to be 38.2±0.4 eV, while the fiest excited triplet state is found at a double-ionization energy of 46.7±0.8 eV. In double-electron-capture reactions involving H+ projectile ions and CK4 molecules, low-lying singlet states of CH42+ are populated. The energies of the four lowest singlet states in CH42+ were measured to be 39.2±0.4, 40.5±0.4, 42.1±1 and 51.0±1 eV. High-resolution photon-induced Auger-electron spectra of the CH4 molecule have been recorded. The KLL Auger Spectrum shows four distinct structures in the 30-70 eV double-ionization evergy range centred at 40.3±0.1, 47.03, 53.2±0.3 and 6.9±0.3 eV. The previously published data on CH42+ have been reviewed.
Zusätzliches Material:
4 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/rcm.1290060708
