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Title: Solid evacuated microspheres of hydrogen

Abstract

A method is provided for producing solid, evacuated microspheres comprised of hydrogen. The spheres are produced by forming a jet of liquid hydrogen and exciting mechanical waves on the jet of appropriate frequency so that the jet breaks up into drops with a bubble formed in each drop by cavitation. The drops are exposed to a pressure less than the vapor pressure of the liquid hydrogen so that the bubble which is formed within each drop expands. The drops which contain bubbles are exposed to an environment having a pressure just below the triple point of liquid hydrogen and they thereby freeze giving solid, evacuated spheres of hydrogen.

Inventors:
 [1];  [2];  [3]
  1. (Urbana, IL)
  2. (Champaign, IL)
  3. (Livermore, CA)
Issue Date:
Research Org.:
Illinois Univ., Urbana (USA)
OSTI Identifier:
864449
Patent Number(s):
4366112
Assignee:
United States of America as represented by United States (Washington, DC) OSTI
DOE Contract Number:  
AT(11-1-)2234
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
solid; evacuated; microspheres; hydrogen; method; provided; producing; comprised; spheres; produced; forming; jet; liquid; exciting; mechanical; waves; appropriate; frequency; breaks; drops; bubble; formed; drop; cavitation; exposed; pressure; vapor; expands; contain; bubbles; environment; below; triple; freeze; giving; solid evacuated; appropriate frequency; vapor pressure; liquid hydrogen; mechanical waves; evacuated microspheres; producing solid; microspheres comprised; contain bubbles; exciting mechanical; /376/252/264/

Citation Formats

Turnbull, Robert J., Foster, Christopher A., and Hendricks, Charles D. Solid evacuated microspheres of hydrogen. United States: N. p., 1982. Web.
Turnbull, Robert J., Foster, Christopher A., & Hendricks, Charles D. Solid evacuated microspheres of hydrogen. United States.
Turnbull, Robert J., Foster, Christopher A., and Hendricks, Charles D. Fri . "Solid evacuated microspheres of hydrogen". United States. https://www.osti.gov/servlets/purl/864449.
@article{osti_864449,
title = {Solid evacuated microspheres of hydrogen},
author = {Turnbull, Robert J. and Foster, Christopher A. and Hendricks, Charles D.},
abstractNote = {A method is provided for producing solid, evacuated microspheres comprised of hydrogen. The spheres are produced by forming a jet of liquid hydrogen and exciting mechanical waves on the jet of appropriate frequency so that the jet breaks up into drops with a bubble formed in each drop by cavitation. The drops are exposed to a pressure less than the vapor pressure of the liquid hydrogen so that the bubble which is formed within each drop expands. The drops which contain bubbles are exposed to an environment having a pressure just below the triple point of liquid hydrogen and they thereby freeze giving solid, evacuated spheres of hydrogen.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1982},
month = {1}
}

Patent:

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