Accession Number:

ADA272110

Title:

Optical Metrology of Magnetically Trapped Hydrogen

Descriptive Note:

Final rept. 1 Jun 92-31 May 93,

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF PHYSICS

Personal Author(s):

Report Date:

1993-10-19

Pagination or Media Count:

4.0

Abstract:

Our goal is to carry out ultra precise laser spectroscopy on trapped atomic hydrogen in the microkelvin regime, and to develop methods for measuring the 1S-2S transition frequency. The major effort during this past year was to perfect methods for carrying out ultraviolet laser spectroscopy in our cold hydrogen trap. We carried out extensive investigations on the absorption of UV light in various window materials, achieving values of a few percent. In addition, we developed a new method for dealing with the heat deposited in the window by controlling the helium film that lines the low temperature cell in which the experiment is carried out. Other accomplishments include the development of improved instrumentation for spatially stabilizing and amplitude modulating the 243 nm laser beam, and improvements in the frequency control of the laser system.

Subject Categories:

  • Inorganic Chemistry
  • Physical Chemistry
  • Electricity and Magnetism
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE