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Archive for the ‘particle physics’ category: Page 8

Oct 26, 2024

Researchers use magnetic fields to freeze light in its tracks

Posted by in categories: computing, particle physics

This finding, achieved independently by a team at Pennsylvania State University published in the same journal, holds immense potential for the development of nanophotonic devices.

Manipulating the flow of light in materials at small scales is crucial for creating efficient nanophotonic chips, the building blocks for future optical devices. In the realm of electronics, scientists can control the movement of electrons using magnetic fields.

The Lorentz force, exerted by the magnetic field, dictates the electron’s trajectory. However, this approach is inapplicable to photons – the fundamental particles of light – as they lack an electrical charge.

Oct 26, 2024

Search results for dark photon leptonic decays manage to exclude new regions

Posted by in categories: cosmology, particle physics

“Dark matter searches are currently one of the hot topics in the high energy physics community. We look for weakly interacting particles in a number of different facilities ranging from accelerator experiments to tabletop laboratory setups,” Alina Kleimenova and Stefan Ghinescu, part of the NA62 Collaboration, told Phys.org.

“While LHC experiments rely on the high collision energy, smashing protons at about 14 trillion electron volts, NA62, being a fixed-target experiment, focuses on the high intensity approach with a quintillion (1018) of protons on target per year. This intensity creates a unique opportunity to probe various rare processes and beyond Standard Model scenarios.”

Dark photons, also referred to as A’, are among the beyond the Standard Model whose existence could be probed by the NA62 detector. These particles could act as mediators between known visible matter and dark matter.

Oct 26, 2024

For heating plasma in fusion devices, researchers unravel how electrons respond to neutral beam injection

Posted by in categories: nuclear energy, particle physics

Heating a plasma for fusion research requires megawatts of power. One approach that research tokamaks use to achieve the necessary power input is neutral beam injection (NBI). With NBI, fast neutral particles are generated in a device called a beam source and then injected into the plasma.

Oct 26, 2024

Ghost Particles on Patrol: Antimatter Detector Revolutionizes Nuclear Reactor Monitoring

Posted by in categories: military, nuclear energy, particle physics

Researchers have developed a new detector that analyzes antineutrinos emitted by nuclear reactors to monitor their activities from great distances.

This technology, which utilizes the phenomena of Cherenkov radiation, could revolutionize how we ensure reactors are not producing material for nuclear weapons, despite challenges from other environmental antineutrinos.

Nuclear Fission and Antimatter Monitoring.

Oct 25, 2024

US nuclear fusion lab hits 200,000 plasma ‘shots’ in a milestone

Posted by in categories: nuclear energy, particle physics

A cornerstone of the US fusion research program, the DIII-D National Fusion Facility, has accomplished a major achievement. The nuclear fusion facility has completed its 200,000th experimental cycle.

“While completing 200,000 shots is impressive in its own right, this achievement is far more than a mere number,” said Dr Richard Buttery, Director of the DIII-D National Fusion Facility.

Nuclear fusion has long been hailed as the “holy grail” of clean energy. It is the process of nuclear fusion itself that powers the sun and stars. Unlike nuclear fission, which splits atoms and generates radioactive waste, fusion involves combining lighter atoms to form heavier ones.

Oct 25, 2024

NASA sends a shutdown signal to Voyager 2: It has received it at 2 billion km

Posted by in categories: particle physics, space

Considering the future: What Voyager 2 has in store

According to Miller (2024), even though this instrument has been deactivated, engineers anticipate that Voyager 2 will have at least one operable instrument for exploration through the 2030s. The spacecraft continues to operate and transmit data. NASA is also hoping that the spacecraft continues to provide valid information about the interstellar medium too.

The seamless continuation of activities was made possible by the confirmation that the instrument was operating normally. In 2018, it was confirmed that Voyager 2 had crossed the heliosphere’s border and entered interstellar space thanks in large part to the plasma science instrument. Significant changes in atoms, particles, and magnetic fields that are detectable by the instruments of the Voyager probes define this barrier.

Oct 23, 2024

An Extraordinary Particle Could Travel Back in Time, Scientists Say

Posted by in category: particle physics

The hypothetical tachyon particle could potentially send messages backward in time if it exists.

Oct 23, 2024

Quantum entanglement speed is measured for the first time, and it’s too fast to comprehend

Posted by in categories: computing, particle physics, quantum physics

These scientists aren’t focused on the existence of quantum entanglement, but are keen on uncovering how it begins — how exactly do two particles become quantum entangled?

Using advanced computer simulations, they’ve managed to peek into processes that happen on attosecond timescales — a billionth of a billionth of a second.

Quantum entanglement is a strange and fascinating phenomenon where two particles become so interconnected that they share a single state.

Oct 23, 2024

Researchers At Large Hadron Collider Are Confident To Make Contact With Parallel Universe In Days

Posted by in categories: cosmology, particle physics

T he astoundingly complex LHC “atom smasher” at the CERN center in Geneva, Switzerland, are fired up to its maximum energy levels ever in an endeavor to identify — or perhaps generate — tiny black holes.

If successful a very new universe is going to be exposed – modifying completely not only the physics books but the philosophy books too.

Oct 23, 2024

Reinforcement learning-trained optimisers and Bayesian optimisation for online particle accelerator tuning

Posted by in categories: particle physics, robotics/AI

Kaiser, J., Xu, C., Eichler, A. et al. Sci Rep 14, 15,733 (2024). https://doi.org/10.1038/s41598-024-66263-y.

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