Acoustic Microscopy at Cryogenic Temperatures.

Abstract

This report summarizes our progress in development of high resolution acoustic microscopes for use at cryogenic temperatures. During the past year we have concentrated on development of efficient acoustic matching layers for use in liquid helium and extension of our techniques to temperatures below 0.5K in liquid helium. As a first step at these low temperatures, we have begun probing the acoustic properties of the liquid at frequencies at least 5 times higher than previously published results. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1980
Accession Number
ADA087677

Entities

People

  • Calvin Quate
  • J. Heiserman

Organizations

  • Stanford University

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustic Impedance
  • Acoustic Microscopes
  • Acoustic Properties
  • Elements
  • Films
  • Frequency
  • Low Temperature
  • Materials
  • Microscopy
  • New York
  • Plane Waves
  • Stainless Steel
  • Temperature Gradients
  • Thermal Conductivity
  • Transducers
  • Transmission Lines
  • United States

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Nanofabrication and Microfabrication.
  • Technical Research and Report Writing.