| 摘要 |
The invention relates to a method and device for the exposure of samples to radiation to test their ageing, and more specifically to a device having a chamber (30) comprising: a sample-holder cage (40) rotating about an axis (H-H), and means (15) for placing at least one electromagnetic radiation lamp (10) in a fixed position and supplying said lamp, in the central part of the cage (40) The invention provides for an air circulation system with a swirling air flow about the axis (H-H) of the cage, the air flow having essentially components that are tangential and/or radial to the periphery of the cage, and essentially an axial component (H) in the central part of the cage, Preferably, the cage (40) is mounted rotationally on an axially hollowed-out hub (50), the air flow (1) getting discharged in the axial hollow of the hub. Preferably the cylindrical chamber (30) comprises air inlet louvers (31) positioned appreciably on the periphery of the cage (40) that are directed non-radially. It is provided, according to the invention, that the device is designed to work with the axis (H-H) of the rotary cage (40) positioned in a horizontal direction.
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