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

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

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.

Keywords: high energy pulsed Gamma background scattering absorbing

Received: 03 May 2009
Revised: 09 June 2009
Accepted manuscript online:

PACS:	07.85.Fv	(X- and γ-ray sources, mirrors, gratings, and detectors)
	23.20.Lv	(γ-transitions and level energies)
	25.40.Lw	(Radiative capture)
	27.20.+n	(6 ≤ A ≤ 19)
	29.40.Mc	(Scintillation detectors)

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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 2010 Chin. Phys. B 19 010703

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

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