Accession Number:

ADA106785

Title:

Annual Technical Report 1 June 1980-31 May 1981.

Descriptive Note:

Interim rept.,

Corporate Author:

CHICAGO UNIV IL

Personal Author(s):

Report Date:

1981-07-24

Pagination or Media Count:

28.0

Abstract:

The University of Chicago UC and Hughes Research Laboratories HRL collaborative program aims at the development and construction of two 60 keV high resolution, high current density ion microscopesmicroprobes over a three year period. Using existing low resolution probes at UC and HRL, design studies have been conducted to determine a the energy spectra of gallium ions emitted by a liquid metal LM source b the optimum operating condition of the source c the limitations of various image display methods at high and low probe currents d the current yields of several metal ions from LM sources. Optical calculations have been performed to optimize the design of the new microprobe column. An overall system design has been formulated and assembly and engineering drawings completed. Equipment and parts to be procured have been selected. The UC existing probe has been used to continue basic research studies of ion-solid interactions. These include the interaction of molecular hydrogen ions with thin solid foils, ion-induced secondary electron emission, and damage to light element targets under gallium ion bombardment. Author

Subject Categories:

  • Test Facilities, Equipment and Methods
  • Particle Accelerators
  • Nuclear Physics and Elementary Particle Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE