Category Archives: Nuclear and Radiochemistry

Unsealed Radionuclides Used for Labeling in Industrial Tracer Studies

Considering the characteristics of nuclear data, the time needed for the investiga­tions (several days) should match the half-life of the radionuclides. For measure­ments outside the equipment wall, gamma-emitting radionuclides with relatively high energy (>300 keV) are suitable. Radionuclides emitting a high number of gamma quantums per decay are advantageous; because of their higher count rate, lower activity is necessary for […]

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Radionuclide Imaging

The main field of nuclear medicine today is imaging with gamma cameras. What can justify the in vivo use of radioactive preparations delivering radiation dose to humans? Other generally applied modalities of medical imaging, including ultrasound, X-ray, and X-ray computed tomography (CT), and most routine proce­dures of magnetic resonance imaging (MRI) are structural imaging methods. A pathological process is visible […]

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Moisture Content Determination

The best-known application of measuring methods based on neutron scattering and attenuation is moisture content determination, which relies on the special character of hydrogen as a neutron-scattering medium. When high-energy neutrons collide with hydrogen atoms, the former lose their energy and slow down. The rate of slowing down is great since the masses of the neutron and the hydrogen nucleus […]

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