DURIP Theoretical/Experimental Investigations of Highly Energetic Dication Species
Abstract
The titanium sapphire laser has been modified with a thick etalon to achieve single frequency scanning capability. The Neodymium:YAG laser and dye laser have been modified with a home-built scanning system. Preliminary investigations using a medium pressure electrical discharge ion source gave reasonable quantities of NO(++) and several other dications. These ions survived the rather severe collisional environment of the ion source. The nature of this source, however, did not permit very controlled formation conditions. Consequently, the ion source has been replaced with an electron impact ionized supersonic expansion source. Construction of this source has been completed, and the first mass spectra of dications have just been obtained. A new ion source has been devised to optimize the production of doubly-charged molecular cations. Using the NF3 precursor, the species NF2(++) and NF(++) are observed. With HCL and DCL precursors, both HCL(++) and DCL(++) species are observed. Using CCl4, a wide variety of species are formed, including CCL(++), HCCL(++), and H2CCL(++), several of which may be previously unreported. With CF4, we observe CF(++), CF2(++) and CF3(++). We also observe the readily made species, NO(++) and CO(++) , starting from their parent neutrals. We are presently working on an eight- photon double ionization process in NO and a ten-photon process for N2 (to produce NO(++) and N2(++), respectively). (aw)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 15, 1989
- Accession Number
- ADA217771
Entities
People
- Stephen R. Leone
- W. C. Lineberger
Organizations
- University of Colorado Boulder