CRITICAL CURRENT FOR BURNOUT IN AN OGRA-TYPE DEVICE

Technical Report · Fri Oct 23 04:00:00 EDT 1959

DOI:https://doi.org/10.2172/4241223· OSTI ID:4241223

Simon, A.

A complete algebraic analysts was obtained for the variation of the steady state ion density n+ with injected current I in an OGRA-tane fusion device (i.e., a device based on trapping of ions by breakup of energetic molecular ions on collision with either the background gas or trapped ions). The most general variation of n+ with I is shown to be an s-curve with at most three rots of n+ for a given input I. A physical interpretation of these three roots is given. In addition algebraic expressions are obtained for the two currents at which the bends in the s-curve occur. It will be necessary to attain the larger current in order to build up a high density plasma when the density ia being increased from below. On the other hand, once the high density has been achieved it may be maintained by steady injection of a current larger than the lower value. Parameters corresponding roughly io the specifications of OGRA are used io obtaam some numerical results. The previously published formulas for burnout in DCX are extended to include effects of neutral backstreaming from the input beam and "ion- pumping." (aath)

• Research Organization: Oak Ridge National Lab., Tenn.
• DOE Contract Number: W-7405-ENG-26
• NSA Number: NSA-14-001024
• OSTI ID: 4241223
• Report Number(s): ORNL-2831
• Country of Publication: United States
• Language: English

Related Subjects

BURNOUT
CONFINEMENT
CURRENTS
DECOMPOSITION
GASES
INJECTION
INTERACTIONS
IONIZATION
IONS
MAGNETIC MIRRORS
MOLECULES
OGRA
PHYSICS
PLASMA
THERMOCOUPLES
VARIATIONS