An imaging nuclear survey system

被引：20

作者：

Redus, R ^{[1
]}

Squillante, M ^{[1
]}

Gordon, JS ^{[1
]}

Bennett, P ^{[1
]}

Entine, G ^{[1
]}

Knoll, G ^{[1
]}

Wehe, D ^{[1
]}

Guru, S ^{[1
]}

机构：

[1] UNIV MICHIGAN,DEPT NUCL ENGN,ANN ARBOR,MI 48109

来源：

IEEE TRANSACTIONS ON NUCLEAR SCIENCE | 1996年 / 43卷 / 03期

关键词：

D O I：

10.1109/23.507230

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A combined video and gamma ray imaging system has been developed which can rapidly determine the location, distribution, and intensity of gamma ray sources. This instrument includes both a conventional video camera and a gamma ray imaging system, which is based upon a position sensitive photomultiplier tube, a scintillator, and a pinhole collimator. The gamma camera records the position and energy of each interaction, determining the energy spectrum and count rate from each direction. We have used a prototype of such an instrument in preliminary field tests to image radioactive sources with gamma ray energies between 120 keV and 2.4 MeV. At 662 keV, this new system achieves an angular resolution of 4 degrees FWHM with an absolute efficiency of 1x10(-6) at 1 meter, with sensitivity such that a 0.5 mCi Cs-137 source at 5 meters can be located in <60 seconds. Higher efficiency and sensitivity can be achieved at lower spatial resolution.

引用

页码：1827 / 1831

页数：5

共 10 条

[1]

GORDON J, 1992, SPIE P, V1734, P187

[2] A HIGH-ENERGY GAMMA-CAMERA USING A MULTIPLE HOLE COLLIMATOR AND PSPMT [J].