固体核径迹探测器的刻度

Calibration of Solid State Nuclear Track Detector CR-39

为了测量在神舟飞船返回舱内由空间重电离粒子引起的辐射剂量,采用了固体核径迹探测器CR39来测量飞船飞行期间,返回舱内由重电离粒子引起的能量沉积.本文介绍了CR-39探测器对能量沉积的响应的刻度.

In order to measure the radiation dosimetry by heavy ions which entered the Shen-Zhou (SZ) shuttles, a solid state nuclear track detector CR-39 was installed in the inner wall of SZ recoverers. Using a CR-39 detector the energy transfer from heavy ions was measured when the shuttle was travelling in space. This work described a calibration of the response of CR-39 detector to the energy deposition using 9 ion accelerator beams from C to Kr. The calibration points cover the whole sensitive region of the CR-39 detector. For the linear energy transfer (LET) is larger than 12.6 keV μm-H2O, the total absorbed dose of SZ-3 and SZ-4 are obtained to be (23.50 ± 0.46) μGy and (35.34 ± 1.57) μGy, respectively, the corresponding total dose equivalent are obtained to be (355.6 ± 9.7) mu;Sv and (574.4 ± 15.6) μSv, respectively.