PROCESS FOR CONTROLLING THE REACTIVITY OF THERMAL NUCLEAR REACTOR ESPECIALLY OF A HIGH TEMPERATURE REACTOR

Patent · Mon Jul 17 00:00:00 EDT 1961

OSTI ID:4776106

A process for controlling the reactivity of a thermal reactor consists in incorporating in the moderator a material in which the neutron capture cross section changes with the temperature and shows a resonance at a temperature higher than the reactor working temperature, so that the increase in absorption with increasing working temperature is sufficient to ensure the stability of the chain reaction in the proximity of the working temperature. Preferably the incorporated material consists of indium or rhodium in a powdery form mixed with the uranium and incorporated in the graphite moderator. According to another embodiment the indium or rhodium is used in the form of a carbide. (NPO)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-16-034105
• OSTI ID: 4776106
• Report Number(s): FR 1270023
• Resource Relation: Other Information: Orig. Receipt Date: 31-DEC-62
• Country of Publication: France
• Language: English

Related Subjects

REACTOR TECHNOLOGY
ABSORPTION
CAPTURE
CARBIDES
CONTROL SYSTEMS
CROSS SECTIONS
GRAPHITE MODERATOR
HIGH TEMPERATURE
INDIUM
MIXING
MODERATORS
NEUTRONS
PATENT
POWDERS
POWER PLANTS
REACTIVITY
REACTORS
RESONANCE
RHODIUM
STABILITY
TEMPERATURE
VARIATIONS