2021-01-11 DIY Particle Detector （photodiode 光电二极管）

相关资料/链接：

- DIY Particle Detector (github wiki)

- 在看到的中文详解：
* 在家做核子研究：怎么DIY一个粒子检测器

引言：

这个DIY挺有意思的。用的是光电二极光来测量电子(beta)、alpha，测量的能量范围为：33 keV to 8 MeV。

我自己目前一直在做的是用相机上的像素(pixel sensors)来做高能粒子的探测。现在正在写粒子识别的软件程序。

一直还没有考虑能量刻度的事情。将来做到能量刻度这一部分的时候，这个DIY里的能量刻度可以作为方法参考。

- 相关文献：

Smartphone and Tablet-Based Sensing of Environmental Radioactivity: Mobile Low-Cost Measurements for Monitoring, Citizen Science, and Educational Purposes

- Gallery

- 视频PPT

- how does it work: "Tiny amounts of electrical charge are generated in repurposed photodiodes by impinging particles. The charges form currents which are amplified and converted into voltage pulses that are compatible with audio/microphone signal inputs. The size of the pulse is proportional to the energy deposited by the ionising radiation. A reference calibration with sources of known energy spectra is provided."

- Workshops: "These DIY particle detectors have been built by high school students(age 16 - 18), teachers, makers, and citizen science enthusiasts (age~20 - 60) during several workshops.After a little introduction into the soldering of electronic components,the whole device can be built in less than two hours - including the modification of a candy tin box as its case."