Accession Number:

ADA169874

Title:

Recent Improvements in Real Time Gas Electron Diffraction,

Descriptive Note:

Corporate Author:

ARKANSAS UNIV FAYETTEVILLE DEPT OF CHEMISTRY AND BIOCHEMISTRY

Report Date:

1985-01-01

Pagination or Media Count:

2.0

Abstract:

A 40 KeV focused electron beam intersects an effusive gas jet and the scattering pattern generated is displayed on a fluorescent screen. Currently the screen is optically coupled by a transfer lens to the photodiode array sensor, where as many as 1024 independent and equidistant channels record the angular dependence and intensity profile of the scattered electrons. Thus, in a matter of minutes, entire scattering cross sections are available for analysis. In contrast to the feedback latency inherent in photographic practice, this rapid data collection and interpretation allows for immediate on-line optimization of experimental conditions.

Subject Categories:

  • Physical Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE