The bubbler is an insulated copper cell(φ0× 00mm)containing 0ml of tritiated water. It is placed in asemiconductor cold 其鼓泡器是一个φ0× 00mm 的铜室,内装0ml 氚水,置于半导体冷阱中,冷阱工作温度在8—℃之间时,恒温精度在±0.0 ℃以内。