564 K 13 pp. | ||

View Document | ||

Title | Effect of the Temperature of the Moderator on the Velocity Distribution of Neutrons with Numerical Calculations for H as Moderator | |

Author(s) | Wigner, E. P.; Wilkins, J. E. Jr. | |

Publication Date | September 14, 1944 | |

Report Number | AECD-2275 | |

Unique Identifier | ACC0147 | |

Other Numbers | CP-2156; OSTI ID: 4421803 | |

Research Org | Oak Ridge National Laboratory (ORNL) | |

Contract No | W-7401-eng-37 | |

Sponsoring Org | U. S. Atomic Energy Commission (AEC) | |

Other Information | Declassified September 13, 1948 | |

Subject | Neutrons; Atoms; Binding Energy; Crystals; Differential Equations; Distribution; Hydrogen; Moderators; Neutron Beams; Numericals; Reflection; Slowdown; Temperature; Velocity | |

Related Web Pages | Eugene Wigner and Fundamental Symmetry Principles | |

Abstract | In this paper we set up an integral equation governing the energy distribution of neutrons that are being slowed down uniformly throughout the entire space by a uniformly distributed moderator whose atoms are in motion with a Maxwellian distribution of velocities. The effects of chemical binding and crystal reflection are ignored. When the moderator is hydrogen, the integral equation is reduced to a differential equation and solved by numerical methods. In this manner we obtain a refinement of the dv/v{sup 2} law. (auth) | |

564 K 13 pp. | ||

View Document | ||