Accession Number:

AD0680677

Title:

MULTIPLE IONIZATION OF MERCURY BY SUCCESSIVE ELECTRON IMPACTS,

Descriptive Note:

Corporate Author:

NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) RADIO AND ELECTRICAL ENGINEERING DIV

Personal Author(s):

Report Date:

1968-05-13

Pagination or Media Count:

10.0

Abstract:

Mercury ions of charge multiplicity up to n 9 have been formed by repeated collisions of slow electrons less than 150 eV with ions trapped in an electron beam of high current density .05 Asq cm. Ion current is observed at electron energies below the ionization potential for all multiply charged ions up to n 8 and is ascribed to collision sequences involving metastable states of the ions eNeNmeeN 1, where N represents an ion of charge multiplicity n. All the breaks observed in the ionization probability curves for n or 3 can be explained in terms of collision sequences involving spectroscopically known metastable levels as limiting steps. Measured ionization potentials of the highly ionized species up to n 9 are in reasonable agreement with extrapolation of spectroscopic values. Author

Subject Categories:

  • Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE