Accession Number:

AD0602322

Title:

LIFETIMES OF NONEQUILIBRIUM CARRIERS IN MAGNETIC TRAPS,

Descriptive Note:

Corporate Author:

BOEING SCIENTIFIC RESEARCH LABS SEATTLE WASH

Report Date:

1964-04-01

Pagination or Media Count:

14.0

Abstract:

Nonequilibrium electrons and holes in approximately equal density are produced in p-InSb at 77 K by forcing a current greater than ohmic through the sample. The density decays exponentially after an initial rapid decay occurring in or equivalent to 200 nsec. The lifetime in the exponential region is 0.92 0.05 microsecond in the nonequilibrium carrier density range 0.9 to 2.1 x 10 to the 13th power cm to the -3rd power when no magnetic fields are applied. The excess carrier density in the presence of a magnetic trap compared with that in its absence after a given decay time is observed to be enhanced by as much as 65. The trap configuration used in these measurements is achieved by superposition of three static fields A a uniform axial one, H sub a B a symmetric non-uniform axial field emanating from two current coils located one each in the planes of the sample ends, H sub em, where em signifies end mirror C an axially symmetric transverse field in the form of a quadrupolar cusp, H sub wm, where wm signifies wall mirror. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE