A thresho:d electron-impact excitation spectrum is presented for ethylene. Compared with previous threshold experiments, more accurate energy-positions have ken obtained for the observed processes. The fust observation of the 3B1u fit -+ n\*) excitation function is reoorted, in which a new temporary
Low energy electron-impact emission from gases
โ Scribed by Kozo Hirota; Motoyoshi Hatada; Teiichiro Ogawa
- Publisher
- Elsevier Science
- Year
- 1976
- Weight
- 806 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0020-7055
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
Low-energy (O-5 V above threshold) electron-impact excitation spectra and a trarismission spectrum are presented for acetylene. it is found that excitation via temporary negative ions plays a domimnt role. Assignments are suggested for the observed electronic excitation processes.
Electronic excitation by low energy electron impact has been \ludied for 1,3,5-trarfs-hexatriene. At = 4.2 cV. 3 weak absorption is observed. On the basis of the results of semi-empirical calculations this absorption can be assigned to the second triplet state.
A mixture of cis and tram 1,3,5-hcxatricne has been studied by electron impact at incident electron energies of 20 cV, 40 eV, 50 eV. and 70 eV, at scattering angles from 0" to 80", and with effective energy resolutions in the range from 0.05 eV to 0.15 PV. Singlet -L triplet transitions with maximum
In low-energy electron impact on neutral molecules, the free electron and the molecule often form an intermediate metastable electron-molecule compound. This compound may either release the excess electron by autodetachment (AD) or fragment by a reaction called dissociative electron attachment [DE