Physical design and Monte Carlo simulations of a space radiation detector onboard the SJ-10 satellite
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摘要
A radiation gene box(RGB) onboard the SJ-10 satellite is a device carrying mice and drosophila cells to determine the biological effects of space radiation environment. The shielded fluxes of different radioactive sources were calculated and the linear energy transfers of γ-rays,electrons,protons and α-particles in the tissue were acquired using A-150 tissue-equivalent plastic. Then,a conceptual model of a space radiation instrument employing three semiconductor sub-detectors for deriving the charged and uncharged radiation environment of the RGB was designed.The energy depositions in the three sub-detectors were classified into 15 channels(bins) in an algorithm derived from the Monte Carlo method. The physical feasibility of the conceptual instrument was also verified by Monte Carlo simulations.
A radiation gene box(RGB) onboard the SJ-10 satellite is a device carrying mice and drosophila cells to determine the biological effects of space radiation environment. The shielded fluxes of different radioactive sources were calculated and the linear energy transfers of γ-rays,electrons,protons and α-particles in the tissue were acquired using A-150 tissue-equivalent plastic. Then,a conceptual model of a space radiation instrument employing three semiconductor sub-detectors for deriving the charged and uncharged radiation environment of the RGB was designed.The energy depositions in the three sub-detectors were classified into 15 channels(bins) in an algorithm derived from the Monte Carlo method. The physical feasibility of the conceptual instrument was also verified by Monte Carlo simulations.
A radiation gene box(RGB) onboard the SJ-10 satellite is a device carrying mice and drosophila cells to determine the biological effects of space radiation environment. The shielded fluxes of different radioactive sources were calculated and the linear energy transfers of γ-rays,electrons,protons and α-particles in the tissue were acquired using A-150 tissue-equivalent plastic. Then,a conceptual model of a space radiation instrument employing three semiconductor sub-detectors for deriving the charged and uncharged radiation environment of the RGB was designed.The energy depositions in the three sub-detectors were classified into 15 channels(bins) in an algorithm derived from the Monte Carlo method. The physical feasibility of the conceptual instrument was also verified by Monte Carlo simulations.
引文
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2 Mc Mahan M A et al.Standard Particles for Dosimetry of Proton Beams for Use in Radiation Effects Testing of Electronics.In:2008 IEEE Radiation Effects Data Workshop,Workshop Record.Tucson,AZ,135–141
3 Benton E R,Benton E V.Nucl.Instrum.Methods Phys.Res.,B,2001,184(1):255–294
4 Xapsos M A et al.IEEE Trans.Nucl.Sci.,2007,54(6):1985–1989
5 Vette J I.The AE-8 Trapped Electron Model Environment.NSSDC Report 91.24,1991.4
6 Heynderickx D et al.Radiat.Meas.,1996,26:947–952
7 Costa E et al.Astrophys.Space Sci.,1984,100(1):165–174
8 http://www.nist.gov/pml/data/
9 Goodman L J.Phys.Med.and,Biol.,1978,23(4):753–758
10 Staub H,Bethe H,Ashkin J.Experimental Nuclear Physics,1.New York:John Wiley&Sons,Inc.,1953