Materials Science and Technology 2006
DOI: 10.1002/9783527603978.mst0109
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Nuclear Reactor Moderator Materials

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Cited by 3 publications
(1 citation statement)
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“…The type of high-purity graphite known as nuclear graphite is used in nuclear reactors as a neutron moderator and structural component in the reactor core for providing a pathway for coolant and control rods. ,, Fast neutrons impinge on the graphite, displacing carbon atoms from their equilibrium positions in the crystal lattice to metastable interstitial positions between carbon layer planes. This leads to dimensional changes in the graphite structure and ultimately changes in its physical properties. Isotropic graphite is preferred over anisotropic graphite for use as a moderator in reactors because it shows greater resistance to this neutron irradiation damage, relative to anisotropic graphite. ,, As a result, isotropic graphite has a longer lifetime in service than anisotropic graphite. However, the properties and, hence, structural integrity of graphite are dependent upon its precursor material and the processing conditions used to make it.…”
Section: Introductionmentioning
confidence: 99%
“…The type of high-purity graphite known as nuclear graphite is used in nuclear reactors as a neutron moderator and structural component in the reactor core for providing a pathway for coolant and control rods. ,, Fast neutrons impinge on the graphite, displacing carbon atoms from their equilibrium positions in the crystal lattice to metastable interstitial positions between carbon layer planes. This leads to dimensional changes in the graphite structure and ultimately changes in its physical properties. Isotropic graphite is preferred over anisotropic graphite for use as a moderator in reactors because it shows greater resistance to this neutron irradiation damage, relative to anisotropic graphite. ,, As a result, isotropic graphite has a longer lifetime in service than anisotropic graphite. However, the properties and, hence, structural integrity of graphite are dependent upon its precursor material and the processing conditions used to make it.…”
Section: Introductionmentioning
confidence: 99%