In electron impact dissociative ionization of CF4, using a time-of-flight apparatus, four cation pair coincidences have been observed between F ÷ ions and the fragment ions: CFf, CF~, CF÷, and C÷. Absolute cross sections and thresholds for cation pair production from the fragmentation of CF4 are rep
Optical emission of GeF+4(D̃) produced by ion impact ionization of GeF4
✍ Scribed by H. Van Lonkhuyzen; J.F.M. Aarts
- Book ID
- 103028131
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- English
- Weight
- 569 KB
- Volume
- 140
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
Emission spectra produced by l-20 keV He+, Ne+ and H+ impact on GeF, have been obtained and relative emission cross sections determined. By comparing the energy dependence of the ion impact data with that for charge-transfer ionization of SiF., leading to SiF: (d) and by reference to PE data of GeF,, the 255, 290 and 420 nm emissions are attributed to %A, B and c transitions, respectively of GeF: . We found the d-+c emission of SiF: in the spectral region 510 to 730 nm.
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