Accession Number:

AD0679411

Title:

A TWO-STAGE DOUBLE-HEMISPHERICAL ELECTRON ENERGY SELECTOR,

Descriptive Note:

Corporate Author:

NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) DIV OF PURE CHEMISTRY

Personal Author(s):

• Maeda,K.
• Semeluk,G. P.
• Lossing,F. P.

Report Date:

1968-06-07

Pagination or Media Count:

14.0

Abstract:

The construction and performance of a two-stage electron energy selector of the double-hemispherical type are described. Energy half-widths of 0.06-0.12 V in the electron beam have been obtained with operating voltages of 10-30 V in the hemispherical stages. No magnetic shielding was employed. Resolved electron currents at a half-width of 0.07 V were obtained, in the form of a well-collimated beam which was passed axially through a cylindrical reaction chamber. Preliminary results without mass resolution on metastable-atom and positive-ion formation are reported, together with later results on formation of Ar and Kr using a quadrupole mass filter, in rare gases. Author

Descriptors:

• (*ATOMIC ENERGY LEVELS
• MEASUREMENT)
• (*MASS SPECTROSCOPY
• INSTRUMENTATION)
• MOLECULAR STRUCTURE
• ELECTRON BEAMS
• TEST METHODS
• TEST EQUIPMENT
• INTERACTIONS
• MAGNETIC FIELDS
• ELECTRIC FIELDS
• CONSTRUCTION
• SELECTION
• CANADA

Subject Categories:

• Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE