A Spanish research group from a public university has developed an accuracy method for creating high-energy radiation scintillators from monolithic inorganic crystals. New Lambertian-type diffuse reflection features can be achieved using an intelligent laser technique that introduces a degree of randomization in the translucent walls of each cell of the inorganic crystal.
Nowadays, scintillation crystals configured as scintillation cells are used in different fields of science and technology. In any of these applications, scintillation cells are used to convert high-energy gamma ray or X ray photons into low-energy photons that can be easily measured by a photodetector. Among the applications of inorganic scintillation materials stands out in the field of the positron emission tomography (PET).
A specially designed configuration is used to build the developed scintillator. A laser beam applied on a monolithic scintillation crystal is used, engraving a design or diffuse microscopic array of points distributed with a certain degree of randomization, according to the optic properties to be obtained. A translucent wall with uniform features at the macroscopic level is thereby formed.
The developed method includes techniques for evaluating efficiency as an optic reflector of the pixels defined by those surfaces, and offers new design opportunities that were inconceivable up until now in the current state of the art.
Another aspect of the engraving lies in the improvements to the reflective walls with several layers of engraved regions. By controlling the distance between two adjacent regions in the order of a few tenths of a micrometre, the thickness and opacity of the created light guide surface can be controlled, allowing the optic features of the final pixeling to be easily handled.
All of these new features lead to a more precise, rapid, reliable and inexpensive manufacturing process of high-energy radiation scintillators from monolithic inorganic crystals.
Researchers are seeking for manufacturers of radiation detectors in general or of biomedical diagnostic devices (PET) or medical imaging devices, for licencing and/or manufacture agreement. Technical agreement is also requested with partners that work on detection of high-energy radiation and Biomedical diagnosis by means of detecting radiation.