The preliminary observing achievements of the Super Soft X ray Detector and the γ ray Detector in the fields of cosmicγ ray burst, solar X ray burst and cosmic X ray /γ ray background radiation are summarized. The ...The preliminary observing achievements of the Super Soft X ray Detector and the γ ray Detector in the fields of cosmicγ ray burst, solar X ray burst and cosmic X ray /γ ray background radiation are summarized. The detectors are onboard Shenzhou 2 which was launched on Jan.10, 2001. The scientific missions and the general situation of the instruments are briefly described.展开更多
An electronic personal dosimeter mainly uses a Si-PIN photodiode as X-and gamma-ray detectors.The photon energy response of this instrument is inconsistent in the case of no correction,which seriously affects the accu...An electronic personal dosimeter mainly uses a Si-PIN photodiode as X-and gamma-ray detectors.The photon energy response of this instrument is inconsistent in the case of no correction,which seriously affects the accurate monitoring of personal dose equivalent H_p(10)parameters for radiation workers.For this reason,in this paper we propose a method of combining composite screen detection technology,multichannel measurement technology,and the channel ratio method to achieve accurate measurement of the personal dose equivalent parameters.According to China National Standard GB/T 13161-2003 and National Verification Regulation JJG 1009-2006,the instrument was tested in the energy range between 48 keV and 1.25 MeV.The experimental results showed that the difference of energy response to ^(137)C_S corrected by the new method was almost constant within ±6.0%,which fulfilled the ±30% requirement of GB/T 13161-2003 and JJG1009-2006.Meanwhile,the method proposed obtained energy information regarding the radiation field.展开更多
文摘The preliminary observing achievements of the Super Soft X ray Detector and the γ ray Detector in the fields of cosmicγ ray burst, solar X ray burst and cosmic X ray /γ ray background radiation are summarized. The detectors are onboard Shenzhou 2 which was launched on Jan.10, 2001. The scientific missions and the general situation of the instruments are briefly described.
基金supported by the National Key Scientific Instruments To Develop Dedicated(2013YQ090811)
文摘An electronic personal dosimeter mainly uses a Si-PIN photodiode as X-and gamma-ray detectors.The photon energy response of this instrument is inconsistent in the case of no correction,which seriously affects the accurate monitoring of personal dose equivalent H_p(10)parameters for radiation workers.For this reason,in this paper we propose a method of combining composite screen detection technology,multichannel measurement technology,and the channel ratio method to achieve accurate measurement of the personal dose equivalent parameters.According to China National Standard GB/T 13161-2003 and National Verification Regulation JJG 1009-2006,the instrument was tested in the energy range between 48 keV and 1.25 MeV.The experimental results showed that the difference of energy response to ^(137)C_S corrected by the new method was almost constant within ±6.0%,which fulfilled the ±30% requirement of GB/T 13161-2003 and JJG1009-2006.Meanwhile,the method proposed obtained energy information regarding the radiation field.
