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Title: Neutron flux measurements around PLT

Technical Report ·
DOI:https://doi.org/10.2172/5092223· OSTI ID:5092223

Using Indium activation foils, the toroidal and poloidal neutron emission patterns were determined for PLT plasmas which include ICRF and neutral beam heating. The activities produced the /sup 115/In (n,n') /sup 115m/In reaction were determined by counting the 336 keV ..gamma.. line of the /sup 115m/In decay. This activation cross section falls just below 2.5 MeV so that the influence of scattered neutrons of degraded energies is reduced. From the magnitude of the activity, the absolute calibration of the PLT fusion neutron emission is obtained with less than or equal to 40% accuracy.

Research Organization:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
DOE Contract Number:
AM02-76CH03073
OSTI ID:
5092223
Report Number(s):
PPPL-1696; TRN: 80-017599
Country of Publication:
United States
Language:
English