Method and means for producing solid evacuated microspheres of hydrogen

Patent · Thu Jan 01 00:00:00 EST 1976

OSTI ID:862668

Turnbull, Robert J ^[1]; Foster, Christopher A ^[2]; Hendricks, Charles D ^[3]

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1. Urbana, IL
2. Champaign, IL
3. Livermore, CA

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.

• Research Organization: Illinois Univ., Urbana (USA). Charged Particle Lab.
• DOE Contract Number: AT(11-1)-2234
• Assignee: United States of America as represented by United States Energy (Washington, DC)
• Patent Number(s): US 3985841
• OSTI ID: 862668
• Country of Publication: United States
• Language: English

Related Subjects

method
means
producing
solid
evacuated
microspheres
hydrogen
provided
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
/264/252/376/