Picotesla magnetometry of microwave fields with diamond sensors

Science Advances (2022). DOI: 10.1126/sciadv.abq8158″ width=”800″ height=”530″/> Basic principle of continuous heterodyne detection. (A) Simplified energy levels of NV centers. The ∣±1〉 states can be polarized to ∣0〉 state with a rate of Γp. A resonant microwave addresses the ∣0〉 ↔ ∣1〉 spin transition. (B) Evolution of the NV center driven by microwaves of different … Read more

Giant blobs in Earth’s mantle may be driving a ‘diamond factory’

The boundary zone between Earth’s molten metal core and the mantle, its rocky middle layer, might be a diamond factory. A new laboratory experiment finds that, under extreme temperatures and pressures, the combination of iron, carbon and water — all potential ingredients found at the core-mantle boundary — can form diamond. If this process also … Read more

Diamond rains could fall through the interior of ice giant planets

An exotic form of precipitation called ‘diamond rain’ — long thought to occur deep within ice giant planets — could be more common than previously thought. A team of researchers have experimented with material similar to that found within ice giants such as the solar system planets Neptune and Uranus, discovering that the presence of … Read more

‘Diamond rain’ on giant icy planets could be more common than previously thought

Studying a material that even more closely resembles the researchers composition of ice giants, found that oxygen boosts the formation of diamond rain. The team also found evidence that, in combination with the diamonds, a recently discovered phase of water, often described as “hot, black ice” could form. Credit: Greg Stewart/SLAC National Accelerator Laboratory A … Read more