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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...
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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.
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A physically cryptographic warhead verification system using neutron induced nuclear resonances.

Ezra M Engel1, Areg Danagoulian2

  • 1Department of Nuclear Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA.

Nature Communications
|October 2, 2019
PubMed
Summary
This summary is machine-generated.

This study introduces a novel technique using neutron-induced nuclear resonances for verifying nuclear warhead dismantlement. The method offers isotopic sensitivity and inherent information security, enhancing arms control treaty effectiveness.

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Area of Science:

  • Nuclear physics
  • Arms control verification technology

Background:

  • Nuclear weapons stockpiles pose a global security risk.
  • Effective arms control treaties require robust verification mechanisms.
  • Current verification methods lack sufficient isotopic sensitivity and information security for warhead dismantlement.

Purpose of the Study:

  • To present the experimental feasibility of a new technique for verifying nuclear warhead authenticity during dismantlement.
  • To address the limitations of existing solutions in isotopic sensitivity and information security.

Main Methods:

  • Utilizing neutron-induced nuclear resonances.
  • Measuring isotopic composition and geometric configuration.
  • Implementing physical encryption for information security.

Main Results:

  • Demonstrated experimental feasibility of the proposed technique.
  • The method is sensitive to both isotopic and geometric characteristics of warheads.
  • Information is physically encrypted, preventing sensitive data leakage.

Conclusions:

  • The developed technique can significantly enhance the trustworthiness of future arms control treaties.
  • This approach allows for the verified dismantlement of nuclear warheads, expanding treaty scope.
  • Offers a secure and sensitive method for nuclear arms control verification.