ABSTRACT Background: With respect to the difference in the interaction of thermal neutron and X rays with matter, using two radiography systems of thermal neutron and X rays will yield highly valuable information for studying the inner structure of biologic samples. Methods: The high sensitivity of thermal neutron to hydrogen, in particular, has led to recognizing this system as a useful tool ...

Neutron radiography has long been used in various scientific investigations and industrial applications that require thermal neutrons for characterization. Different kinds of sources such as radioactive sources, portable and accelerator based neutron generators and nuclear reactors can be used to provide thermal beam of neutrons suited for neutron radiography. Among the different varieties of n...

A control rod K5 of the 10 MW Budapest Research Reactor was damaged in 2004. We have applied both neutron and X-ray radiography to study the distribution of the residual material in the damaged K5. X-ray radiography visualized the main distribution of the residual materials, like different kinds of B4C and water, and the frozen gas bubbles, while neutron radiography displayed the fine structure...

Epithermal and Fast Neutron Radiography (FNR) are complementary to the conventional radiography with high energy gamma-rays or brems-strahlung radiation and which iarecommonly used for the inspection of thick metal objects. The advantage of using high energy neutrons for radiographic examination of thick metal objects is their higher penetration power and improved contrast sensitivity. Rather l...