Lead-208 is the heaviest known doubly magic nucleus and its structure is therefore of special interest. Despite this magicity, which acts to provide a strong restorative force toward sphericity, it is known to exhibit both strong octupole correlations and some of the strongest quadrupole collectivity observed in doubly magic systems. In this Letter, we employ state-of-the-art experimental equipment to conclusively demonstrate, through four Coulomb-excitation measurements, the presence of a large, negative, spectroscopic quadrupole moment for both the vibrational octupole 3_1^- and quadrupole 2_1^+$ state, indicative of a preference for prolate deformation of the states.
From computer chips to image sensors in cameras, today’s technology is overwhelmingly based on a semiconductor called silicon. This technology has been shrinking for decades—think of early room-sized computers compared to today’s desktops—but physical limitations will soon prevent further improvement.
That’s why scientists and engineers are preparing for a new generation of technology—one based on quantum mechanics.
The electrons in so-called “quantum materials” behave differently than those in silicon, enabling more complex behaviors, like magnetism and superconductivity, that are useful for future quantum technologies.
When a droplet of water falls on a hot pan, it dances across the surface, skimming on a thin layer of steam like a tiny hovercraft; this is known as the Leidenfrost effect. But now, researchers know what happens when a hot droplet falls on a cool surface.
These new findings, published in the journal Newton, demonstrate that hot and burning droplets can bounce off cool surfaces, propelled by a thin layer of air that forms beneath them. This phenomenon could inspire new strategies for slowing the spread of fires and improving engine efficiency.
“We started with a very fundamental question: What will happen when a burning droplet impacts a solid surface?” says senior author Pingan Zhu of City University of Hong Kong, China.
Quantitative phase imaging (QPI) is a microscopy technique widely used to investigate cells. Even though earlier biomedical applications based on QPI have been developed, both acquisition speed and image quality need to improve to guarantee a widespread reception.
Scientists from the Görlitz-based Center for Advanced Systems Understanding (CASUS) at Helmholtz-Zentrum Dresden-Rossendorf (HZDR) as well as Imperial College London and University College London suggest leveraging an optical phenomenon called chromatic aberration—that usually degrades image quality—to produce suitable images with standard microscopes.
A team of physicists at the SLAC National Accelerator Laboratory, in Menlo Park, California, generated the highest-current, highest-peak-power electron beams ever produced. The team has published their paper in Physical Review Letters.
For many years, scientists have been finding new uses for high-powered laser light, from splitting atoms to mimicking conditions inside other planets. For this new study, the research team upped the power of electron beams, giving them some of the same capabilities.
The idea behind the newer, more powerful beams was pretty simple, the team acknowledges; it was figuring out how to make it happen that was difficult. The basic idea is to pack as much charge as possible into the shortest amount of time. In their work, they generated 100 kiloamps of current for just one quadrillionth of a second.
Vanishing atoms can ruin quantum calculations. Scientists have a new plan to locate leaks.
Quantum computers face a major challenge: atoms, which serve as their qubits, can vanish without warning, corrupting calculations. Researchers have developed a groundbreaking method to detect this problem in neutral-atom quantum systems without disrupting their state. This discovery helps overcome a key hurdle in making quantum computing.
Performing computation using quantum-mechanical phenomena such as superposition and entanglement.
A new EMBL innovation dramatically improves Brillouin microscopy, enabling faster, more efficient 3D imaging of light-sensitive samples.
Using lattice quantum chromodynamics, researchers have created what is likely the smallest force field map ever generated. Their findings reveal astonishingly powerful interactions, akin to the weight of 10 elephants squeezed into a space smaller than an atomic nucleus.
Mapping the Forces Inside a Proton
Scientists have successfully mapped the forces inside a proton, revealing in unprecedented detail how quarks—the tiny particles within—react when struck by high-energy photons.
For years, scientists were baffled by a peculiar problem: why do platinum electrodes, usually stable, corrode so quickly in electrochemical devices? A collaboration between SLAC National Accelerator Laboratory and Leiden University cracked the case by using cutting-edge X-ray techniques.
They found that platinum hydrides, not sodium ions as once suspected, were responsible for the degradation. This discovery could revolutionize hydrogen production and electrochemical sensor durability, potentially slashing costs and improving efficiency.
Unraveling a Costly Mystery.
In the Milky Way’s central bulge, about 24,000 light-years from Earth, a peculiar pair of objects appears to be hurtling through space at breakneck speed.
Evidence suggests these objects are a high-velocity star and its accompanying exoplanet, a new study reports. If that’s confirmed, it would set a new record as the fastest-moving exoplanet system known to science.
Stars are on the move throughout the Milky Way, typically at a few hundred thousand miles per hour. Our Solar System’s average velocity through the galaxy’s Orion Arm is 450,000 miles per hour, or 200 kilometers per second.