Acoustic Microscopy at Cryogenic Temperatures.

Abstract

During the past year work has been accomplished on developing an acoustic microscope in superfluid helium. In order to test the apparatus, we have studied its behavior using focussed beams in water and a plane beam in helium. Images of various objects have been produced using water and liquid argon as propagating media. Some initial work has been done towards producing quarter wave matching layers to reduce the interface loss between the lens material and the liquid helium.

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Document Details

Document Type
Technical Report
Publication Date
Sep 29, 1978
Accession Number
ADA060391

Entities

People

  • Calvin Quate
  • J. Heiserman

Organizations

  • Stanford University

Tags

Communities of Interest

  • Advanced Electronics
  • Sensors

DTIC Thesaurus Topics

  • Acoustic Impedance
  • Acoustic Microscopes
  • Acoustics
  • Assembly
  • Blood
  • Blood Cells
  • Ceramic Materials
  • Films
  • Frequency
  • Materials
  • Materials Processing
  • Microscopes
  • Microscopy
  • Optical Materials
  • Silica Glass
  • Transducers
  • Waves

Fields of Study

  • Physics

Readers

  • Optical Physics and Photonics.
  • Thermal Physics or Thermal Science.
  • Wave Propagation and Nonlinear Chaotic Dynamics.