Tritium digital autoradiography with a Medipix2 hybrid silicon pixel detector
Tritium digital autoradiography with a Medipix2 hybrid silicon pixel detector
复制标题
使用 Medipix2 混合硅像素探测器进行氚数字放射自显影
DOI：
10.1016/j.nima.2003.09.027
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发表时间：
2004
影响因子：
1.4
通讯作者：
P. Russo
中科院分区：
文献类型：
--
作者：
G. Mettivier;M. Montesi;P. Russo
我们报告了使用室温混合像素探测器获得的3 H β放射自显影的第一次测量结果，该探测器由Medipix 2单粒子计数读出芯片凸点键合到300μm厚的硅像素探测器组成。该系统具有256×256平方像素，间距为55μm，总灵敏面积为14× 14 mm ~ 2。每个像素包含一个双阈值计数器和一个13位计数器。使用相当于小于6 keV的检测阈值和5×10 - 3counts mm-2s-1的背景计数率，暴露长达数小时，在露天条件下，在与硅探测器的连续顶部电极接触的薄聚酯薄膜上，获得了氚标记溶液滴的实时图像。
We report on the first measurements of3H beta autoradiography obtained using a room temperature hybrid pixel detector, consisting of the Medipix2 single particle counting read-out chip bump-bonded to a 300μm thick silicon pixel detector. This system has 256×256 square pixels of 55μm pitch for a total sensitive area of 14×14mm2. Each pixel contains a double threshold discriminator and a 13-bit counter. Using a detection threshold equivalent to less than 6keV and a background count rate of 5×10−3counts mm−2s−1, with exposures up to several hours, real-time images have been obtained of tritium-labeled solution drops spotted on a thin mylar foil placed in contact with the continuous top electrode of the silicon detector, in open air condition.