Accession Number:

ADA281367

Title:

Carbon Clusters Studied by Neutralization-Reionization Mass Spectrometry

Descriptive Note:

Final rept. 1991-1994

Corporate Author:

CORNELL UNIV ITHACA NY BAKER LAB

Personal Author(s):

Report Date:

1994-06-25

Pagination or Media Count:

5.0

Abstract:

The chemistry of Cn molecules and ions in plasmas carbon arcs, laser ablation and in the formation of polynuclear aromatics, diamond films, and soot has been the subject of extensive theoretical and experimental research. In these studies, ab initio calculations of isomeric carbon clusters CnOsup zero and Cn, n 2-4, yield structures and energies similar to previous reports, although five not two C4 structures have local energy minima. Dissociative ionization of structurally varied precursors was used to prepare C3 and C4 ionic and neutral isomers however, their mass spectra from collisionally activated dissociation CAD and neutralization-reionization NR under a wide variety of conditions are indistinguishable, indicating only one isomer or the same mixture of isomers.

Subject Categories:

  • Inorganic Chemistry
  • Physical Chemistry
  • Nuclear Physics and Elementary Particle Physics
  • Plasma Physics and Magnetohydrodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE