関連する実験動画

Updated: Jul 12, 2026

Laser-heating and Radiance Spectrometry for the Study of Nuclear Materials in Conditions Simulating a Nuclear Power Plant Accident
09:18

Laser-heating and Radiance Spectrometry for the Study of Nuclear Materials in Conditions Simulating a Nuclear Power Plant Accident

Published on: December 14, 2017

核子-メゾンカスケードとシールドリング:高エネルギー粒子が物質を通過すると,核子-メゾンカスケードが形成されます

R G Alsmiller

    Science (New York, N.Y.)
    |September 22, 1967
    PubMed
    まとめ

    宇宙船や加速器のための効果的な放射線シールドの設計は,粒子カスケードとその生物学的効果を理解することに依存しています. 粒子の生成と放射線に関する正確なデータ

    さらに関連する動画

    Neutron Crystallography Data Collection and Processing for Modelling Hydrogen Atoms in Protein Structures10:10

    Neutron Crystallography Data Collection and Processing for Modelling Hydrogen Atoms in Protein Structures

    Published on: December 1, 2020

    関連する概念動画

    Diamagnetic Shielding of Nuclei: Local Diamagnetic Current01:14

    Diamagnetic Shielding of Nuclei: Local Diamagnetic Current

    An applied magnetic field causes the electrons present in the molecule to circulate, setting up a local diamagnetic current within the molecule. The local diamagnetic current arising from circulating sigma-bonding electrons induces a magnetic field, Blocal that opposes the applied magnetic field, B0. The effective magnetic field experienced by these nuclei is given by the difference between the applied and local magnetic fields in a phenomenon called local diamagnetic shielding. Essentially,...
    Nuclear Power02:36

    Nuclear Power

    Controlled nuclear fission reactions are used to generate electricity. Any nuclear reactor that produces power via the fission of uranium or plutonium by bombardment with neutrons has six components: nuclear fuel consisting of fissionable material, a nuclear moderator, a neutron source, control rods, reactor coolant, and a shield and containment system.
    Nuclear Fuels
    Nuclear fuel consists of a fissile isotope, such as uranium-235, which must be present in sufficient quantity to provide a...
    Nuclear Transmutation03:20

    Nuclear Transmutation

    Nuclear transmutation is the conversion of one nuclide into another. It can occur by the radioactive decay of a nucleus, or the reaction of a nucleus with another particle. The first manmade nucleus was produced in Ernest Rutherford’s laboratory in 1919 by a transmutation reaction, the bombardment of one type of nuclei with other nuclei or with neutrons. Rutherford bombarded nitrogen-14 atoms with high-speed α particles from a natural radioactive isotope of radium and observed protons being...
    Nuclear Fission02:50

    Nuclear Fission

    Many heavier elements with smaller binding energies per nucleon can decompose into more stable elements that have intermediate mass numbers and larger binding energies per nucleon—that is, mass numbers and binding energies per nucleon that are closer to the “peak” of the binding energy graph near 56. Sometimes neutrons are also produced. This decomposition of a large nucleus into smaller pieces is called fission. The breaking is rather random with the formation of a large number of different...
    Types of Radioactivity03:23

    Types of Radioactivity

    The most common types of radioactivity are α decay, β decay, γ decay, neutron emission, and electron capture.
    Alpha (α) decay is the emission of an α particle from the nucleus. For example, polonium-210 undergoes α decay:
    Nuclear Stability03:18

    Nuclear Stability

    Protons and neutrons, collectively called nucleons, are packed together tightly in a nucleus. With a radius of about 10−15 meters, a nucleus is quite small compared to the radius of the entire atom, which is about 10−10 meters. Nuclei are extremely dense compared to bulk matter, averaging 1.8 × 1014 grams per cubic centimeter. If the earth’s density were equal to the average nuclear density, the earth’s radius would be only about 200 meters.
    To hold positively charged protons together in the...