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	Dose estimation and shielding calculation for X-ray hazard at high intensity laser facilities
	Qiu R(邱睿) ; Zhang H(张辉) ; Yang B(杨博) ; James C.Liu ; Sayed H.Rokni ; Michael B.Woods ; Li JL(李君利) ; QIU Rui ; ZHANG Hui ; YANG Bo ; James C.Liu ; Sayed H.Rokni ; Michael B.Woods ; LI Jun-Li
	2016-03-30 ; 2016-03-30
关键词	X-ray high intensity laser dose shielding Monte Carlo O434.1
其他题名	Dose estimation and shielding calculation for X-ray hazard at high intensity laser facilities
中文摘要	An ionizing radiation hazard produced from the interaction between high intensity lasers and solid targets has been observed. Laser-plasma interactions create "hot" electrons, which generate bremsstrahlung X-rays when they interact with ions in the target. However, up to now only limited studies have been conducted on this laser-induced radiological protection issue. In this paper, the physical process and characteristics of the interaction between high intensity lasers and solid targets are analyzed. The parameters of the radiation sources are discussed,including the energy conversion efficiency from laser to hot electrons, hot electron energy spectrum and electron temperature, and the bremsstrahlung X-ray energy spectrum produced by hot electrons. Based on this information,the X-ray dose generated with high-Z targets for laser intensities between 1014 and 1020W/cm2 is estimated. The shielding effects of common shielding items such as the glass view port, aluminum chamber wall and concrete wall are also studied using the FLUKA Monte Carlo code. This study provides a reference for the dose estimation and the shielding design of high intensity laser facilities.; An ionizing radiation hazard produced from the interaction between high intensity lasers and solid targets has been observed. Laser-plasma interactions create "hot" electrons, which generate bremsstrahlung X-rays when they interact with ions in the target. However, up to now only limited studies have been conducted on this laser-induced radiological protection issue. In this paper, the physical process and characteristics of the interaction between high intensity lasers and solid targets are analyzed. The parameters of the radiation sources are discussed,including the energy conversion efficiency from laser to hot electrons, hot electron energy spectrum and electron temperature, and the bremsstrahlung X-ray energy spectrum produced by hot electrons. Based on this information,the X-ray dose generated with high-Z targets for laser intensities between 1014 and 1020W/cm2 is estimated. The shielding effects of common shielding items such as the glass view port, aluminum chamber wall and concrete wall are also studied using the FLUKA Monte Carlo code. This study provides a reference for the dose estimation and the shielding design of high intensity laser facilities.
语种	英语 ; 英语
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/143228]
专题	清华大学
推荐引用方式 GB/T 7714	Qiu R,Zhang H,Yang B,et al. Dose estimation and shielding calculation for X-ray hazard at high intensity laser facilities[J],2016, 2016.
APA	邱睿.,张辉.,杨博.,James C.Liu.,Sayed H.Rokni.,...&LI Jun-Li.(2016).Dose estimation and shielding calculation for X-ray hazard at high intensity laser facilities..
MLA	邱睿,et al."Dose estimation and shielding calculation for X-ray hazard at high intensity laser facilities".(2016).

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