The invention discloses a device and method for detecting
radon in a
scintillation chamber, and relates to the technical field of
nuclear radiation detection. The device for measuring
radon in the
scintillation chamber comprises a plurality of single-layer
scintillation chamber bodies, wherein each single-layer scintillation chamber comprises a shell; the shells are connected together in a stackedmanner from bottom to top, and partition plates are arranged in the cavity of each shell; the corresponding partition plates divide the cavity of each shell into a plurality of sector chambers, and the inner wall surfaces of the sector chambers are coated with
scintillation crystals; the distance between any two points in each sector chamber is less than the range of alpha particles produced by 222Rn decay; all the sector chambers communicate with one another in sequence, and a
wavelength displacement
optical fiber penetrates through the cavity of each shell; the
tail ends of the
wavelength displacement fibers are connected to a
photomultiplier tube or a
silicon photomultiplier; the
photomultiplier tube or
silicon photomultiplier is connected to an electronic readout
system; and the
wavelength-shifted fibers are used to collect
flicker produced by the
impact of the alpha particles on the
scintillation crystals on the inner walls of the sector chambers. The concentration of the
radon can be determined from the relationship between
alpha particle counting and the concentration of the radon, which is identified and recorded by the electronic readout
system.