Video Experimental Relacionado
Updated: Oct 31, 2025

10:42
Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
Published on: May 3, 2019
7.0K
Demostración de un reloj atómico de iones atrapados en el espacio
E A Burt1, J D Prestage2, R L Tjoelker2
1Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA. eric.a.burt@jpl.nasa.gov.
Nature
|July 1, 2021
Resumen
La NASA también.
Área de la Ciencia:
- Los relojes atómicos son cruciales para la navegación espacial y la investigación física fundamental.
- La tecnología del reloj atómico de iones atrapados ha avanzado significativamente en aplicaciones terrestres.
- La operación espacial plantea desafíos de rendimiento para los relojes atómicos.
Sus antecedentes:
- Los relojes atómicos son esenciales para el cronometraje preciso en la navegación y la física.
- Los relojes atómicos espaciales actuales enfrentan limitaciones debido al duro entorno espacial.
- Los relojes atómicos de iones atrapados ofrecen un rendimiento superior, pero son difíciles de desplegar en el espacio.
Objetivo del estudio:
- Para demostrar el rendimiento de un reloj atómico de iones atrapados que funciona en el espacio.
- Para evaluar la viabilidad de relojes atómicos avanzados para la navegación espacial profunda.
- Para evaluar la estabilidad y la deriva de un reloj atómico espacial.
Principales métodos:
- Utilizó un diseño de reloj atómico de iones atrapados, adaptado para operaciones espaciales.
- Realizó pruebas en órbita del Reloj Atómico del Espacio Profundo durante más de 12 meses.
- Estabilidad de frecuencia medida a corto y largo plazo y deriva diaria.
Principales resultados:
- El Reloj Atómico del Espacio Profundo demostró una estabilidad a largo plazo de 3 x 10^-15 en 23 días.
- El reloj exhibió una desviación estimada de 3.0 ((0.7) x 10^-16 por día.
- El rendimiento superó las capacidades actuales del reloj espacial hasta en un orden de magnitud.
Conclusiones:
- El reloj atómico de iones atrapados basado en el espacio muestra una notable estabilidad y baja deriva.
- Esta tecnología supera las limitaciones de rendimiento anteriores para aplicaciones espaciales.
- Permite una navegación espacial mejorada a través de la medición in situ de los tiempos de retraso de la señal.
Videos de Conceptos Relacionados
Atomic Nuclei: Larmor Precession Frequency
2.0K
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,...
2.0K
Atomic Emission Spectroscopy: Instrumentation
729
The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers. Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
729
Atomic Nuclei: Nuclear Spin
3.9K
All atomic particles possess an intrinsic angular momentum, or 'spin'. Electrons, protons, and neutrons each have a spin value of ½, although protons and neutrons in nuclei may have higher half-integer spins owing to energetic factors.
Atomic nuclei have a net nuclear spin, , which can have an integer or half-integer value. In atomic nuclei, the spins of protons are paired against each other but not with neutrons, and vice versa. Consequently, an even number of protons does not contribute to...
Atomic nuclei have a net nuclear spin, , which can have an integer or half-integer value. In atomic nuclei, the spins of protons are paired against each other but not with neutrons, and vice versa. Consequently, an even number of protons does not contribute to...
3.9K
The Quantum-Mechanical Model of an Atom
54.0K
Shortly after de Broglie published his ideas that the electron in a hydrogen atom could be better thought of as being a circular standing wave instead of a particle moving in quantized circular orbits, Erwin Schrödinger extended de Broglie’s work by deriving what is now known as the Schrödinger equation. When Schrödinger applied his equation to hydrogen-like atoms, he was able to reproduce Bohr’s expression for the energy and, thus, the Rydberg formula governing hydrogen spectra.
54.0K
Atomic Emission Spectroscopy: Lab
307
AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...
307
Electron Orbital Model
70.2K
Orbitals are the areas outside of the atomic nucleus where electrons are most likely to reside. They are characterized by different energy levels, shapes, and three-dimensional orientations. The location of electrons is described most generally by a shell or principal energy level, then by a subshell within each shell, and finally, by individual orbitals found within the subshells.
The first shell is closest to the nucleus, and it has only one subshell with a single spherical orbital called the...
The first shell is closest to the nucleus, and it has only one subshell with a single spherical orbital called the...
70.2K

