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Anantatmula, R.P.; Brehm, W.F.; Baldwin, D.L.; Bevan, J.L.
Hanford Engineering Development Lab., Richland, WA (USA)1978
Hanford Engineering Development Lab., Richland, WA (USA)1978
AbstractAbstract
[en] Radiation fields created by the production of 7Be in lithium of the Fusion Materials Irradiation Test (FMIT) Facility can be sufficiently high to prevent contact maintenance of system components. Preliminary experiments have shown that 7Be will adhere strongly to the FMIT piping and components and a good control method for 7Be must be developed. The initial experiments have been conducted in static stainless steel capsules and a Modified Thermal Convection Loop (MTCL). The average lithium film thickness on stainless steel was found to be 11 μm in the temperature range 4950 to 5710K from the capsule experiments. The diffusion coefficient for 7Be in stainless steel at 5430K was calculated to be 5.31 x 10-15 cm2/sec. The cold leg of the MTCL picked up much of the 7Be activity released into the loop. The diffusion trap, located in the cold leg of the MTCL, was ineffective in removing 7Be from lithium, at the very slow flow rates (< 3.79 x 10-4 m3/s) used in the MTCL. Pure iron has been shown to be superior to coblat and nickel as a getter material for 7Be
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Source
Dec 1978; 32 p; 1. topical meeting on fusion reactor materials; Miami Beach, FL, USA; 29 - 31 Jan 1979; CONF-790125--41; Available from NTIS., PC A03/MF A01
Record Type
Report
Literature Type
Conference
Report Number
Country of publication
ALKALI METALS, ALLOYS, BERYLLIUM ISOTOPES, BETA DECAY RADIOISOTOPES, CARBON ADDITIONS, CHROMIUM ALLOYS, CHROMIUM STEELS, CHROMIUM-NICKEL STEELS, CORROSION RESISTANT ALLOYS, DAYS LIVING RADIOISOTOPES, DIMENSIONS, ELECTRON CAPTURE RADIOISOTOPES, ELEMENTS, EVEN-ODD NUCLEI, HAZARDS, HEALTH HAZARDS, HEAT RESISTING ALLOYS, IRON ALLOYS, IRON BASE ALLOYS, ISOTOPES, LIGHT NUCLEI, METALS, MOLYBDENUM ALLOYS, NICKEL ALLOYS, NUCLEI, RADIOISOTOPES, STAINLESS STEELS, STEELS, TRANSITION ELEMENT ALLOYS, TRANSITION ELEMENTS
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