neutron-absorbing control rod
1control rod — n. an adjustable rod or bar containing a neutron absorbing material or, in a fast reactor, fuel used to regulate the fission chain reaction inside a nuclear reactor core …
2Control rod — PWR control rod assembly, above fuel element A control rod is a rod made of chemical elements capable of absorbing many neutrons without fissioning themselves. They are used in nuclear reactors to control the rate of fission of uranium and… …
3control rod — /kənˈtroʊl rɒd/ (say kuhn trohl rod) noun 1. Physics a rod or tube of neutron absorbing material that can be moved in and out of a nuclear reactor to control the rate of reaction. 2. Radio the electrode in a radio valve, lying between the cathode …
4control rod — a neutron absorbing material, as boron or cadmium, in the shape of a rod or other configuration, that can be moved into or out of the core of a nuclear reactor to regulate the rate of fission. [1940 45] * * * …
5control rod — noun a rod of a neutron absorbing substance used to vary the output power of a nuclear reactor …
6Neutron poison — For information on biological effects of excessive ionizing radiation, see radiation poisoning. A neutron poison (also called a neutron absorber or a nuclear poison ) is a substance with a large neutron absorption cross section in applications,… …
7control — n. & v. n. 1 the power of directing, command (under the control of). 2 the power of restraining, esp. self restraint. 3 a means of restraint; a check. 4 (usu. in pl.) a means of regulating prices etc. 5 (usu. in pl.) switches and other devices by …
8Erbium — (pronEng|ˈɝbiəm) is a chemical element with the symbol Er and atomic number 68. A rare, silvery, white metallic lanthanide, erbium is a solid in its normal state. It is a rare earth element associated with several other rare elements in the… …
9Scram — This article is about nuclear reactors. For other meanings, see Scram (disambiguation). A scram or SCRAM is an emergency shutdown of a nuclear reactor though the term has been extended to cover shutdowns of other complex operations, such as… …
10Dysprosium — (pronEng|dɪsˈproʊziəm) is a chemical element with the symbol Dy and atomic number 66. Characteristics Dysprosium is a rare earth element that has a metallic, bright silver luster, relatively stable in air at room temperature, but dissolving… …
