Speaker
Description
Radon and its decay products constitute significant sources of background in rare-event experiments, including dark matter and neutrino searches, due to their unavoidable origin from naturally occurring uranium. Both 222Rn and its long-lived progeny, 210Pb, can diffuse from detector material surfaces, resulting in persistent background contributions in low-background experiments. To study this effect, a dedicated system was developed comprising a radon source, a vacuum chamber with a strong electric field, and a thin film for collecting radon daughters, enabling the deposition of 210Pb onto a Nylon-6 thin film. This presentation will describe the hardware setup of the system and discuss results on the diffusion behavior of 210Pb and 210Po under different humidity conditions.
| Keyword-1 | Dark matter |
|---|---|
| Keyword-2 | Diffusion |
| Keyword-3 | Radon |