Video Experimental Relacionado
Updated: Jul 12, 2026

06:04
Simulation of the Planetary Interior Differentiation Processes in the Laboratory
Published on: November 15, 2013
Fusión de helio a temperatura ambiente y alta presión
Resumen
Los científicos han solidificado con éxito el helio a temperatura ambiente, un logro significativo en la física de la materia condensada. Este avance, validado por la ecuación de Simon, abre nuevas vías para la investigación de la ciencia de los materiales.
Área de la Ciencia:
- Física de la materia condensada Física de la materia condensada
- Ciencia de los materiales Ciencia de los materiales.
- Física de las altas presiones Física de las altas presiones
Sus antecedentes:
- El helio normalmente permanece líquido incluso a cero absoluto bajo presión estándar.
- La solidificación del helio requiere presiones extremas, lo que dificulta los estudios a temperatura ambiente.
Objetivo del estudio:
- Lograr y estudiar la solidificación del helio a temperatura ambiente.
- Para validar los resultados experimentales con la ecuación de Simon establecida.
Principales métodos:
- Desarrollo de un nuevo aparato para experimentos de alta presión a temperatura ambiente.
- Carga de la celda experimental bajo condiciones ambientales.
Principales resultados:
- El helio se solidificó con éxito a 24 grados C.
- La presión de fusión medida fue de 115 kilobars, alineándose con las predicciones de la ecuación de Simon.
Conclusiones:
- La solidificación del helio a temperatura ambiente es alcanzable.
- El aparato desarrollado permite nuevas posibilidades experimentales en la investigación de alta presión.
- Se indican posibles aplicaciones en diversos campos científicos.
Videos de Conceptos Relacionados
Applications of the Ideal Gas Law: Molar Mass, Density, and Volume
The volume occupied by one mole of a substance is its molar volume. The ideal gas law, PV = nRT, suggests that the volume of a given quantity of gas and the number of moles in a given volume of gas vary with changes in pressure and temperature. At standard temperature and pressure, or STP (273.15 K and 1 atm), one mole of an ideal gas (regardless of its identity) has a volume of about 22.4 L — this is referred to as the standard molar volume.
Noble Gases
The elements in group 18 are noble gases (helium, neon, argon, krypton, xenon, and radon). They earned the name “noble” because they were assumed to be nonreactive since they have filled valence shells. In 1962, Dr. Neil Bartlett at the University of British Columbia proved this assumption to be false.
Nuclear 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...
Phase Transitions: Melting and Freezing
Heating a crystalline solid increases the average energy of its atoms, molecules, or ions, and the solid gets hotter. At some point, the added energy becomes large enough to partially overcome the forces holding the molecules or ions of the solid in their fixed positions, and the solid begins the process of transitioning to the liquid state or melting. At this point, the temperature of the solid stops rising, despite the continual input of heat, and it remains constant until all of the solid is...
Heat Capacities of an Ideal Gas III
The number of independent ways a gas molecule can move along straight line, rotate, and vibrate is called its degrees of freedom. Supposing d represents the number of degrees of freedom of an ideal gas, the molar heat capacity at constant volume of an ideal gas in terms of d is
Phase Diagram
The phase of a given substance depends on the pressure and temperature. Thus, plots of pressure versus temperature showing the phase in each region provide considerable insights into the thermal properties of substances. Such plots are known as phase diagrams. For instance, in the phase diagram for water (Figure 1), the solid curve boundaries between the phases indicate phase transitions (i.e., temperatures and pressures at which the phases coexist).

