arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0906.4075physics.ins-detphysics.med-ph
收藏

液体氙中511个keV光子产生的闪烁光和电离电荷的同时重建:对PET的潜在应用

Simultaneous reconstruction of scintillation light and ionization charge produced by 511 keV photons in liquid xenon : potential application to PET

P. Amaudruz, D. Bryman, L. Kurchaninov, P. Lu, C. Marshal, J. P. Martin, A. Muennich, F. Retiere, A. Sher

摘要:

为了评估用于正电子发射断层成像的液体氙探测器的性能,我们研究了由511 keV光子在小型原型探测器中产生的闪烁光和电离电荷。用大面积雪崩光电二极管检测闪烁光,而电离电子在漂移高达3 cm后收集在装有低噪声电子器件的阳极上。研究了操作条件作为电场的函数。通过结合闪烁光和电离电荷信号实现了<10%(FWHM)的能量分辨率。研究了闪烁光与电离信号之间的关系。为了优化未来的探测器设计,对波动的来源进行了分析。

英文摘要:

In order to assess the performance of liquid xenon detectors for use in positron emission tomography we studied the scintillation light and ionization charge produced by 511 keV photons in a small prototype detector. Scintillation light was detected with large area avalanche photodiodes while ionization electrons were collected on an anode instrumented with low noise electronics after drifting up to 3 cm. Operational conditions were studied as a function of the electric field. Energy resolutions of <10 % (FWHM) were achieved by combining the scintillation light and ionization charge signals. The relationship between scintillation light and ionization signals was investigated. An analysis of the sources of fluctuations was performed in order to optimize future detector designs.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑