Hadad Kamal, Sarshough Samira, Faghihi Reza, Taheri Mehran
Department of Nuclear Engineering, Shiraz University, Shiraz, Iran.
Appl Radiat Isot. 2013 Apr;74:23-5. doi: 10.1016/j.apradiso.2012.12.008. Epub 2012 Dec 26.
In this study, the sensitivities and calibration factors of polystyrene (PS) to (220)Rn and (222)Rn have been investigated. The sensitivity of compact disks (CD/DVD) as thick polycarbonates (PC) to (220)Rn and (222)Rn has been also obtained by applying a new etching condition. Five different brands of X-ray radiology and MRI films with polystyrene base and four brands of CD/DVDs have been studied to assess their applicability as a passive detector for indoor radon monitoring. The comparison between the sensitivities of PS samples, CD/DVDs (as thick PC) and Lexan PC to (222)Rn and (220)Rn shows an improved sensitivity of PS over conventional PC currently being used as solid state nuclear track detectors (SSNTD). The sensitivity of X-ray radiology PS films to (222)Rn and (220)Rn was found to be 8.77±0.591 and 0.028±0.006 (cm(-2)kBq(-1)d(-1)m(3)). The sensitivities of MRI PS films to Rn-222 and Rn-220 was found to be 12.2±1.25 and 0.360±0.090 (cm(-2)kBq(-1)d(-1)m(3)). The CD/DVD PC found to have a sensitivity of 0.178±0.013 and 0.0024±0.00013 (cm(-2)kBq(-1)d(-1)m(3)) to (222)Rn and (220)Rn respectively.
在本研究中，已对聚苯乙烯（PS）对（220）Rn和（222）Rn的灵敏度及校准因子进行了研究。通过应用一种新的蚀刻条件，还获得了作为厚聚碳酸酯（PC）的光盘（CD/DVD）对（220）Rn和（222）Rn的灵敏度。已研究了五个不同品牌的聚苯乙烯基底X射线放射学和MRI胶片以及四个品牌的CD/DVD，以评估它们作为室内氡监测无源探测器的适用性。PS样品、CD/DVD（作为厚PC）和聚碳酸酯Lexan对（222）Rn和（220）Rn的灵敏度比较表明，PS相对于目前用作固态核径迹探测器（SSNTD）的传统PC具有更高的灵敏度。发现X射线放射学PS胶片对（222）Rn和（220）Rn的灵敏度分别为8.77±0.591和0.028±0.006（cm⁻²kBq⁻¹d⁻¹m³）。发现MRI PS胶片对Rn - 222和Rn - 220的灵敏度分别为12.2±1.25和0.360±0.090（cm⁻²kBq⁻¹d⁻¹m³）。发现CD/DVD PC对（222）Rn和（220）Rn的灵敏度分别为0.178±0.013和0.0024±0.00013（cm⁻²kBq⁻¹d⁻¹m³）。
