Evaporation of lead and lithium from molten Pb17Li — Transport of aerosols

✍ Scribed by H Feuerstein; H Gräbner; J Oschinski; S Horn; S Bender

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 377 KB
• Volume: 17
• Category: Article
• ISSN: 0920-3796
• DOI: 10.1016/0920-3796(91)90058-x

✦ Synopsis

Evaporation of Pb and Li from molten Pb-17Li was investigated between 350 and 800°C in vacuum, argon and helium covergas. Results were also obtained from other experimental facilities. Similarities were found to observations from sodium cooled reactors.

The results show that Pb and Li evaporate independent on each other. The two dements show different behavior along the transport pathway. Deposits of the evaporated metals contained between 0.2 and 98 at% Li. As in the reactor RAPSODIE for sodium, evaporation rates for lithium were smaller in helium than in argon, however evaporation rates of lead were the same in both gases.

No aerosol problems will exists with normal blanket operation. Under experimental conditions, aerosol concentrations were in the range of 10 -9 to 10 -6 g//m 3. Aerosols can easily be trapped with sintered metal filters.