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The discovery of high temperature superconductors in polyhydrides encourages searching for new types of hydrogen rich superconductors. Most of experimentally reported high Tc polyhydride superconductors are binary hydrides of main group elements, rare earth metals (La, Y etc.) or alkali earth metal (Ca).

Prof. Jin team at Institute of Physics of Chinese Academy of Sciences (IOPCAS) recently discovered new hafnium polyhydrides using synergetic techniques based on diamond anvil cell in combination with in situ laser heating during a search for new types of hydrogen rich superconducting materials.

“The hafnium polyhydrides are synthesized at 243GPa and 2000 K high pressure high temperature conditions and exhibits superconductivity with Tc ~83 K at 243GPa,” explained coauthor Xiancheng Wang who is a professor at IOPCAS. The upper critical field was estimated to be ~24 Tesla while the Ginzburg Landau superconducting coherent length obtained is ~37Å.

Scientists have discovered that increasing the production of new neurons in mice with Alzheimer’s.

Alzheimer’s disease is a disease that attacks the brain, causing a decline in mental ability that worsens over time. It is the most common form of dementia and accounts for 60 to 80 percent of dementia cases. There is no current cure for Alzheimer’s disease, but there are medications that can help ease the symptoms.

face_with_colon_three circa 2020.


A new study finds diamonds can actually form at room temperature, under the right pressure.

Image credit: Shutterstock

Diamonds are highly coveted the world over, forming naturally in the Earth’s mantle under extreme temperature and pressure over billions of years. Now, a team of scientists from the Australian National University (ANU) and the Royal Melbourne Institute of Technology (RMIT) University have reported a means of making the gemstones at room temperature within a matter of minutes.

Nuclear physicists studying particle collisions at the Relativistic Heavy Ion Collider (RHIC)—a U.S. Department of Energy Office of Science user facility at DOE’s Brookhaven National Laboratory—have new evidence that particles called gluons reach a steady “saturated” state inside the speeding ions. The evidence is suppression of back-to-back pairs of particles emerging from collisions between protons and heavier ions (the nuclei of atoms), as tracked by RHIC’s STAR detector. In a paper just published in Physical Review Letters, the STAR collaboration shows that the bigger the nucleus the proton collides with, the larger the suppression in this key signature, as predicted by theoretical models of gluon saturation.

“We varied the species of the colliding ion beam because theorists predicted that this sign of saturation would be easier to observe in heavier nuclei,” explained Brookhaven Lab physicist Xiaoxuan Chu, a member of the STAR collaboration who led the analysis. “The good thing is RHIC, the world’s most flexible collider, can accelerate different species of ion beams. In our analysis, we used collisions of protons with other protons, aluminum, and gold.”

Saturation should be easier to see in aluminum, and even easier in gold, when compared to simpler protons, Chu explained, because these bigger nuclei have more protons and neutrons, each made up of quarks and gluons.

https://youtu.be/fWYJwB3FMP0

Power is life, whether in the void or on another planet far from Earth.
Therefore, the use of nuclear energy and a constant, powerful supply of.
electricity has the potential to speed up, improve, and lower the cost of.
interplanetary travel.
The NASA-supported SpaceX nuclear rocket technology may be the way of.
the future for space travel. It might significantly shorten journey times to far
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throughout spaceflight. Additionally, it might reduce the likelihood of hostile.
attacks against satellites.
What is this space technology, and how does it work?
Join us as we explore how SpaceX’s insane new nuclear Starship shocked the.
entire space industry.

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Credits:
Staying Sane in Space.
Science & Futurism with Isaac Arthur.
Episode 358, September 1, 2022
Produced & Narrated by Isaac Arthur.

Written by:
Isaac Arthur.
Logan Smith.

Editors: