Video Experimental Relacionado
Updated: Jul 21, 2026
14:22
Activating Molecules, Ions, and Solid Particles with Acoustic Cavitation
Published on: April 11, 2014
Pruebas de emisiones nucleares durante la cavitación acústica
R P Taleyarkhan1, C D West, J S Cho
1Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA. zrt@ornl.gov
Science (New York, N.Y.)
|March 9, 2002
Resumen
Los investigadores detectaron tritio y neutrones de cavitación en acetona deuterada, lo que sugiere una fusión deuterio- deuterio. Los experimentos de control con acetona normal no mostraron tal actividad, lo que respalda los hallazgos de la fusión.
Área de la Ciencia:
- La física nuclear es la física nuclear.
- Investigación de la cavitación acústica.
Sus antecedentes:
- Los experimentos de cavitación pueden crear condiciones extremas dentro de las burbujas.
- La fusión de deuterio y deuterio es una fuente de energía potencial que requiere altas temperaturas y presiones.
Objetivo del estudio:
- Para investigar la posibilidad de reacciones de fusión nuclear que ocurren durante la cavitación acústica.
- Para analizar los subproductos de la cavitación en acetona desterizada.
Principales métodos:
- Realización de experimentos de cavitación utilizando acetona desidratada.
- Detección de la actividad de desintegración del tritio y las emisiones de neutrones.
- Realización de experimentos de control con acetona normal.
- Utilizando simulaciones de códigos de choque hidrodinámicos.
Principales resultados:
- La actividad de desintegración del tritio por encima de los niveles de fondo se detectó en experimentos con acetona desidratada.
- Se observaron emisiones de neutrones cercanas a 2,5 MeV, consistentes con la fusión de deuterio con deuterio.
- Los experimentos de control con acetona normal no arrojaron señales de tritio o neutrones.
- Las simulaciones indicaron condiciones de implosión de burbujas que alcanzaban 10^6 a 10^7 K.
Conclusiones:
- Los resultados proporcionan evidencia de reacciones de fusión nuclear durante la cavitación en acetona deuterada.
- Los hallazgos sugieren que la cavitación puede crear condiciones adecuadas para la fusión.
- Se justifica una mayor investigación sobre la fusión inducida por cavitación.
Videos de Conceptos Relacionados
03:23Types 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:
Alpha (α) decay is the emission of an α particle from the nucleus. For example, polonium-210 undergoes α decay:
02:50Nuclear 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...
02:45Nuclear Fusion
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...
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...
01:11Atomic Nuclei: Larmor Precession Frequency
The earth's gravitational field produces a 'twisting force' perpendicular to the angular momentum of a spinning mass (such as a spinning top) that causes the mass to 'wobble' around the gravitational field axis in a phenomenon called precession. Similarly, the magnetic moment (μ) of a spinning nucleus precesses due to an external magnetic field directed along the z-axis. The precession of the magnetic moment vector about the magnetic field is called Larmor precession, and the angular frequency...
01:23Atomic Nuclei: Nuclear Relaxation Processes
In the absence of an external magnetic field, nuclear spin states are degenerate and randomly oriented. When a magnetic field is applied, the spins begin to precess and orient themselves along (lower energy) or against (higher energy) the direction of the field. At equilibrium, a slight excess population of spins exists in the lower energy state. Because the direction of the magnetic field is fixed as the z-axis, the precessing magnetic moments are randomly oriented around the z-axis. This...
01:28Standing Waves in a Cavity
A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by: