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Home > Press > Production of X-Ray Detector, High Spatial Resolution for Heavy Charged Particles

Abstract:
Iranian researchers produced x-ray detector and heavy charged particles with high spatial resolution through a highly simple and cheap method.

Production of X-Ray Detector, High Spatial Resolution for Heavy Charged Particles

Tehran, Iran | Posted on February 27th, 2014

The detector is made of zinc oxide nanowire in form of polycarbonate.

Despite numerous applications of scintillation detectors in various industries, dispersion and afterwards, scattering of the produced optical photons are among the most important problems in their applications because it results in undesirable spatial resolution. Therefore, researchers tried to produce a new type of scintillation detector for x-ray and heavy charged particles by using one-dimensional nanowires to improve spatial resolution of the detectors.

To this end, researchers firstly used Mont Carlo simulation to ascertain the desirable performance of the proposed plan, and then they produced zinc oxide electrochemical nanowires with patterns. Through this method, nanowires with high dimensional ratio were grown in the form of polycarbonate casts. Next, polycarbonate layer containing nanowires was combined with a strong CMOS optical sensor to be used in experimental data. Pu238 was used as an alpha-generating source in the experiments and an x-ray generator with a copper target.

The main characteristic of the detector is its simplicity and low production cost. The detector can also be used in very accurate medical imaging by optimizing nano-scintillation optical efficiency by increasing the porosity of the membrane, length of nanowires, and adding appropriate impurity to increase optical gain.

Results of the research have been published in The European Physical Journal, vol. 73, November 2013, pp. 1-7.

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