A Mechanism for the Formation of Electrically Charged Ammonia-Water Clusters in the Condensation Nuclei Personnel Detector.

Abstract

The report presents the results of investigations of the mechanism of formation of ionic clusters of ammonia and water molecules, which can react with acid vapor to form condensation nuclei. An apparatus designed especially for the study of near-atmospheric pressure ion-molecule reactions is described. Ionic species that react with the acid to form the condensation nuclei are presumed to be of the type H(+)(NH3)(H2O). These ionic clusters are the products of a series of ion-molecule reactions originating in a corona discharge. The formation of the clusters in moist air containing trace amounts of ammonia is proposed to proceed by the successive formation of N2(+) (initial ion formed in the discharge), N2H(+) and H2O(+), H3O(+), H(+)(H2O)2, . . . , H(+) (H2O)n, and H(+)(NH3)(H2O)n. A similar mechanism is proposed with O2(+) acting as the initial ion. (Author)

Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1971
Accession Number
AD0733308

Entities

People

  • Charles S. Harden

Tags

DTIC Thesaurus Topics

  • Barometric Pressure
  • Condensation
  • Condensation Nuclei
  • Detectors
  • Isothermal Processes
  • Molecules
  • Personnel Detectors
  • Phase Transformations
  • Warning Systems

Readers

  • Combustion science or combustion engineering.
  • Molecular Photonics/Laser Physics
  • Organic Chemistry