The International Gold Number of Neutrons
The international gold number of neutrons (NG) is a measure of the neutron absorption properties of a material. It is defined as the “number of atoms of gold per square centimeter of surface area that are effective in absorbing neutrons.”
The NG of a material is an important factor in determining its suitability for use in nuclear reactors and other applications where neutron absorption is a concern. Materials with a high NG will absorb more neutrons and are therefore better suited for use in these applications.
The NG of a material can be measured using a variety of techniques. One common technique is to measure the neutron flux before and after it passes through a sample of the material. The difference in neutron flux is proportional to the NG of the material.
The NG of a material can be affected by a number of factors, including the atomic number of the material, the density of the material, and the temperature of the material. In general, materials with a higher atomic number will have a higher NG. Materials with a higher density will also have a higher NG. And materials with a higher temperature will have a lower NG.
The NG of a material is an important property to consider when selecting materials for use in nuclear reactors and other applications where neutron absorption is a concern. By carefully selecting materials with the appropriate NG, it is possible to ensure that these applications operate safely and efficiently.
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