The double ionization and dissoctation of NH3 into the doubly ionized fragment N \*+ is investigated by electron impact. Two double ionization energies of NH, are directly measured at 34.8k0.2 and 39.4k0.5 eV. A third critical energy observed at 66 eV
On the doubly ionized states of ammonia
โ Scribed by F. Tarantelli; A. Tarantelli; A. Sgamellotti; J. Schirmer; L.S. Cederbaum
- Publisher
- Elsevier Science
- Year
- 1985
- Tongue
- English
- Weight
- 673 KB
- Volume
- 117
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
The Auger electron spectrum of ammonin is theoretically inves\igaled usrng the ab init Green's luncllon and configuration interaction methods. Both calculations can quantitatively reproduce the main fealures or the spectrum. The resulls allow an unambiguous assignment of the Auger bands. whch dGe.rs somewhal Irom that previously proposed on the basis of Hafiree-Fock calculations
๐ SIMILAR VOLUMES
Recently, Coolbaugh, Peifer and Garvey reported the observation that the mass spectral peaks attributed to doubly charged NH3 clusters (produced by electron impact ionization) are each composed of seven individual peaks. Two smaller peaks to the left of the parent peak (NH,) :' were explained as bei
## Abstract The observation of doubly charged ions in field ionization with blade or wire emitters does not in itself indicate that high excitation energies (โฅ 17 eV) are accessible through gas phase ionization with such emitters.