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関連する概念動画

Nuclear Fission02:50

Nuclear Fission

9.5K
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...
9.5K
Nuclear Transmutation03:20

Nuclear Transmutation

12.9K
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...
12.9K
Nuclear Stability03:18

Nuclear Stability

20.4K
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...
20.4K
Nuclear Binding Energy02:13

Nuclear Binding Energy

12.3K
The difference between the calculated and experimentally measured masses is known as the mass defect of the atom. In the case of helium-4, the mass defect indicates a “loss” in mass of 4.0331 amu – 4.0026 amu = 0.0305 amu. The loss in mass accompanying the formation of an atom from protons, neutrons, and electrons is due to the conversion of that mass into energy that is evolved as the atom forms. The nuclear binding energy is the energy produced when the atoms’ nucleons...
12.3K
Nuclear Power02:36

Nuclear Power

7.5K
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...
7.5K
Nuclear Fusion02:45

Nuclear Fusion

33.1K
The process of converting very light nuclei into heavier nuclei is also accompanied by the conversion of mass into large amounts of energy, a process called fusion. The principal source of energy in the sun is a net fusion reaction in which four hydrogen nuclei fuse and ultimately produce one helium nucleus and two positrons.
A helium nucleus has a mass that is 0.7% less than that of four hydrogen nuclei; this lost mass is converted into energy during the fusion. This reaction produces about...
33.1K

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Updated: Apr 27, 2026

Production of Synthetic Nuclear Melt Glass
04:36

Production of Synthetic Nuclear Melt Glass

Published on: January 4, 2016

8.9K

核弾頭検証のためのゼロ知識プロトコル.

Alexander Glaser1, Boaz Barak2, Robert J Goldston3

  • 1Department of Mechanical and Aerospace Engineering, Princeton University, E-Quad, Olden Street, Princeton, New Jersey 08544, USA.

Nature
|June 27, 2014
PubMed
まとめ
この要約は機械生成です。

この研究は,ゼロ知識プロトコルを使用した新しい核弾頭検証方法を導入しています. このアプローチは,機密データを開示することなく,アイテムの真偽に対する高い信頼性を保証し,軍縮のセキュリティを強化します.

さらに関連する動画

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

Published on: December 14, 2017

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Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
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Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh

Published on: May 3, 2019

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関連する実験動画

Last Updated: Apr 27, 2026

Production of Synthetic Nuclear Melt Glass
04:36

Production of Synthetic Nuclear Melt Glass

Published on: January 4, 2016

8.9K
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

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Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
10:42

Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh

Published on: May 3, 2019

8.5K

科学分野:

  • 核物理学 核物理学とは
  • 情報セキュリティ 情報セキュリティ
  • 武器規制の検証・検証について

背景:

  • 核兵器規制の検証はパラドックスに直面している:機密データを明らかにすることなく,真偽を保証する.
  • "情報障壁"を備えた既存の検査システムは,不正操作や不正アクセスに脆弱である.

研究 の 目的:

  • ゼロ知識プロトコルを使用した核弾頭検証の新しいアプローチを実証する.
  • 機密情報を測定または保存することなく核弾頭を検証する方法を開発する.

主な方法:

  • エネルギーニュートロンを利用して,提出された項目を尋問する.
  • ニュートロン伝送と放射の差分測定を行う.
  • 検証中にデータプライバシーを確保するために,ゼロ知識プロトコルの適用.

主要な成果:

  • 試験対象から物質の逸脱を検知する上で高いレベルの差別性を達成した.
  • 検証プロセスがゼロの機密情報を明らかにすることを実証した.
  • 核検証のための物理的なゼロ知識システムの実行可能性が確認されました.

結論:

  • 提案されたゼロ知識プロトコルは,核弾頭検証のための安全で効果的な方法を提供します.
  • このテクニックは,機密データを損なうことなく高い信頼性を提供することにより,軍縮を強化します.
  • 物理的なゼロ知識システムには,セキュアなデータ計算と機密情報の比較における潜在的な応用があります.