In this latest work, John Doyle and colleagues at Harvard University have now cooled the three-atom hydroxyl strontium molecules, named after the Greek hero Sisyphus, who was forced to push a boulder onto the top of the hill, Roll down and then often resemble this work forever. Sisyphus cooling process is the molecule through the "climb" by the laser standing waves generated by the potential energy loss of kinetic energy process.

The accelerator works by projecting a high-energy, high-brightness burning laser pointer beam onto a thin metal foil target with an area of only a few square microns. "The energy of the laser pulse is large and the energy of the generated electromagnetic field is even more than an order of magnitude greater than the coulomb force inside the atom," Hidding explains. "The metal foil target is therefore instantaneously converted to a plasma." The plasma particles are strongly excited by the laser and other plasma field acceleration, the degree of acceleration depends on the initial position of the particle, this process can produce huge energy.

With the laser to the atomic gas cooled to ultra-low temperature, first appeared in the late 1970s, completely changed the material quantum state of the study. The first Bose-Einstein condensate was manufactured in the laboratory in 1995. The first Fermi-Dirac condensate was created in 2003 as two important milestones for this technology. The technique relies on the fact that the photon carries a small amount of momentum, and under certain conditions, the atomic reabsorption and re-emission of the photon can reduce its random motion and thus reduce its temperature.

Space radiation in outer space is replicated in the laboratory. Scientists use 5000mw laser pointer plasma accelerators to replicate high-energy particle radiation around the Earth. The study can help scientists to study the impact of space exploration on human beings, and for the development of satellite and rocket equipment to provide a strong guarantee.Space radiation is a major obstacle to human exploration of the solar system. High-energy ionized particles of the sun and deep space are extremely dangerous to human health, and they can penetrate directly through the skin and deposit energy, causing irreversible damage to cells and DNA. In addition, space radiation can cause serious damage to satellite equipment.