A new method for high-energy pulsed Gamma measurement within intense background x-rays

doi:10.1088/1674-1056/19/1/010703

中国物理B ›› 2010, Vol. 19 ›› Issue (1): 10703-010703.doi: 10.1088/1674-1056/19/1/010703

A new method for high-energy pulsed Gamma measurement within intense background x-rays

康克军¹, 谭新建², 欧阳晓平², 王群书², 宋朝晖³, 夏良斌³

(1)Department of Engineering Physics, Tsinghua University, Key Laboratory of Particle & Radiation Imaging (Tsinghua University), Ministry of Education, Beijing 100084, China; (2)Department of Engineering Physics, Tsinghua University, Key Laboratory of Particle & Radiation Imaging (Tsinghua University), Ministry of Education, Beijing 100084, China;Northwest Institute of Nuclear Technology, Xi'an 710024, China; (3)Northwest Institute of Nuclear Technology, Xi'an 710024, China

收稿日期:2009-05-03 修回日期:2009-06-09 出版日期:2010-01-15 发布日期:2010-01-15

A new method for high-energy pulsed Gamma measurement within intense background x-rays

Tan Xin-Jian(谭新建)^a)b), Ouyang Xiao-Ping(欧阳晓平)^a)b)†, Wang Qun-Shu(王群书)^a)b), Song Zhao-Hui(宋朝晖)^b), Kang Ke-Jun(康克军)^a), and Xia Liang-Bin(夏良斌)^b)

^a Department of Engineering Physics, Tsinghua University, Key Laboratory of Particle & Radiation Imaging (Tsinghua University), Ministry of Education, Beijing 100084, China; ^b Northwest Institute of Nuclear Technology, Xi'an 710024, China

Received:2009-05-03 Revised:2009-06-09 Online:2010-01-15 Published:2010-01-15

摘要/Abstract

摘要： The accelerator-generating 6.13~MeV pulsed Gamma by ¹⁹F(p, αγ )¹⁶⁰ reaction usually synchronizes with an intense bremsstrahlung x-ray which has a maximum energy of 1~MeV. This paper proposes a new method, named the scattering and absorbing method, to diagnose the 6.13~MeV Gamma. This method includes two parts: the detector and a scatterer placed in front of the detector. The detector converts the Gamma to electrons and then collects the electrons by a scintillator. In order to restrain the interference of the low-energy background, the scintillator collects the electrons at a small angle. The scintillator is wrapped with electro-absorbing material to absorb the low-energy electrons generated by background x-rays. The theoretical sensitivity ratio of 6.13~MeV Gamma to 1~MeV x-rays is greater than 150. The scatterer is a pretreatment tool to scatter some background x-rays away from the radial beam before they enter the detector. By varying the length, the scatterer can reduce the background x-rays to an acceptable level for the detector.

Abstract: The accelerator-generating 6.13 MeV pulsed Gamma by ¹⁹F(p, $\alpha\gamma$)¹⁶⁰ reaction usually synchronizes with an intense bremsstrahlung x-ray which has a maximum energy of 1~MeV. This paper proposes a new method, named the scattering and absorbing method, to diagnose the 6.13 MeV Gamma. This method includes two parts: the detector and a scatterer placed in front of the detector. The detector converts the Gamma to electrons and then collects the electrons by a scintillator. In order to restrain the interference of the low-energy background, the scintillator collects the electrons at a small angle. The scintillator is wrapped with electro-absorbing material to absorb the low-energy electrons generated by background x-rays. The theoretical sensitivity ratio of 6.13 MeV Gamma to 1 MeV x-rays is greater than 150. The scatterer is a pretreatment tool to scatter some background x-rays away from the radial beam before they enter the detector. By varying the length, the scatterer can reduce the background x-rays to an acceptable level for the detector.

Key words: high energy pulsed Gamma, background, scattering, absorbing

中图分类号: (X- and γ-ray sources, mirrors, gratings, and detectors)

07.85.Fv

23.20.Lv (γ-transitions and level energies) 25.40.Lw (Radiative capture) 27.20.+n (6 ≤ A ≤ 19) 29.40.Mc (Scintillation detectors)

谭新建, 欧阳晓平, 王群书, 宋朝晖, 康克军, 夏良斌. A new method for high-energy pulsed Gamma measurement within intense background x-rays[J]. 中国物理B, 2010, 19(1): 10703-010703.

Tan Xin-Jian(谭新建), Ouyang Xiao-Ping(欧阳晓平), Wang Qun-Shu(王群书), Song Zhao-Hui(宋朝晖), Kang Ke-Jun(康克军), and Xia Liang-Bin(夏良斌). A new method for high-energy pulsed Gamma measurement within intense background x-rays[J]. Chin. Phys. B, 2010, 19(1): 10703-010703.

参考文献 11

[1]	Xia L B, Ouyang X P, Wang Q S, Kang K J and Tan X J 2008 Chin. Phys. B 17 4466
[2]	John E B, Joseph S L, Peter B L, Joseph M M, James W T and Carlton S Y 1983 LA-UR-83-1864
[3]	Yang H L and Qiu A C 2004 Nuclear Techniques 27 188 (in Chinese)
[4]	Berggren R R, Caldwell S E, Faulkner J R, Lerche R A, Mack J M, Moy K J, Oertel J A and Young C S 2001 Rev. Sci. Instrum. 72 873
[5]	Ye Y Y, Chen H D, He X J, Teng J T, Zhang C F, Feng J N, Chen X D and Deng F S 1996 Atomic Energy Science and Technology 30 127 (in Chinese)
[6]	Glenn F K 1999 Radiation Detection and Measurement (New York: John Wiley & Sons, Inc.) p51
[7]	Xie Y G and Chen C 2003 Particle Detector and Data Acquisition (Beijing: Science) p23 (in Chinese)
[8]	Agostinelli S 2003 Nucl. Instrum. Methods A 506 250
[9]	Guo Q, Xu R K and Lee Z H 2004 Acta Phys. Sin. 53 1334 (in Chinese)
[10]	Song Z H, Ruan X C, Dai Q S and Wang K L 2005 High Power Laser and Particle Beams 17 453 (in Chinese)
[11]	Briesmeister J F 2003 MCNP-A General Monte Carlo N-particle Transport Code, Version 5 (Alamos: National Laboratory)

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A new method for high-energy pulsed Gamma measurement within intense background x-rays

A new method for high-energy pulsed Gamma measurement within intense background x-rays

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