Saturday , January 16 2021

Scientists have made Plasma 50 times colder than Deep Space



Rice University physicists have simulated a plasma-like ultraviolet plasma at the center of the dead in the laboratory to produce more than fifty times colder laser plasma plasma temperatures.

The work paradox generates a plasma plasma of fresh laser plasma, and researchers expect the physicists to study some of the exotic matter of the universe, such as the intense gas discovered in white dwarf nicks, and fusion energy research.

Plasma matter is in the fourth position: an ultra-compact electric conductive gas cloud, ions and electrons free of charge. At plasma temperatures it is usually produced at very high temperatures, such as the surface of the Sun, but even more in the extreme environments (such as in the midst of the ultraviolet nano or Jupiter) the plasmas begin to occur in unusual ways. Replicating on the ground in the laboratory.

Hot plasma simulation in these extreme conditions can Doing in the laboratory, however, by making a really cold plasma.

As defined in a paper published last week Science, physicists used ten lasers to create super-frozen ones. First, steam metal vapor was evaporated and the vapor was interrupted between laser beams. Then, the cooled strontium, the small cloud of the crystallized, was ionized with a brief laser pulse. An electron of this laser energy generates an electron for each of the atomic atoms to create free electron-free electrons and electrons.

The Laser range uses ultra-hot plasma. Image: Rice University

The Laser range uses ultra-hot plasma. Image: Rice University

At the same time, this laser pulse rapidly extends plasma. The major breakthrough in Rice University physicists was the use of a laser array that was rapidly expanding and cooling down. After this last laser pulse, the plasma temperature is only 50 milliligns or approximately -460 Fahrenheit, 50 times colder than in vacuum in space.

According to physicists, one of the main motivations to create this ultra-hot plasma was to study the phenomenon known as "strong coupling".

When the strontium atom is ionized, it loses an electron, which gives a positive charge of the atom. Although these positively charged ions reject each other, this repulsive force is negligible with respect to kinetic energy that generates heat.

"Repulsive forces are usually whispering in a rock concert," said Tom Killian, a physicist and researcher at Rice University. "All kinetic noise of the system is dropped."

In gravity-related environments, such as the middle of Jupiter or a white dwarf star, they positively charged ions, which are stronger than the repulsive force, although plasma is very hot. At this time, the ions combine with each other and try to find balance, which means that all the surrounding ions are the same. This repulsive balance is a strong coupling.

Read more: We Promised Fusion Energy

Although the physicist may cause very hot plasmos in the ground, the extreme gravity conditions of Jupiter are repeated in the center of the Jupiter in order to obtain a strong coupling in the laboratory. But if the strong whirling force is nothing more than a more powerful plasma than a kinetic force, it will go in the opposite direction.

In other words, Killian and his colleagues want to simulate hot and ultraviolet plasmas by creating plasmo cold ulcers that are much more intense than those of little magnitude.

"We are starting to explore the implications of strong couplings couplings," said Killian. "I hope this will improve our exotic and fast astrophysical plasmas patterns, but I am sure that the discoveries we have not yet dreamed of."


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