Tomsk State University (TSU) announces the development of the world’s first Compton microscope, which allows research at the subcellular level. The device makes it possible to study living cells without the need for their preparation.
This is a scattered radiation device. Currently, there are tools for performing cell studies using electron microscopy. However, in such devices, the object of study is destroyed due to its bombardment with an electron beam. The new system solves this problem.
“In contrast to the transmission X-ray microscope, in the Compton image formation occurs not in the transmitted, but in the scattered X-ray radiation. So, only a small part of the X-ray energy is absorbed in the object of study, which leads to a decrease in the rate of degradation of the objects under study during the experiment.“, Scientists say.
Radiophysicists of TSU and employees of the German electron-synchrotron center DESY took part in the creation of the system. The development of the device began in 2018, and it has been tested since 2019. In addition, specialists were engaged in system debugging.
Russian scientists have created a specialized pixel detector for the device based on large-area gallium arsenide matrix sensors. “Radiophysicists of TSU have developed a technology for creating an “X-ray transparent” metal contact – now it transmits at least 98% of X-rays in the range of 10 keV and above. This increases the sensitivity of the microscope by registering a wider spectrum of scattered radiation“, – the message says.
If you notice an error, select it with the mouse and press CTRL + ENTER.