Current Helium News and Events

Current Helium News and Events, Helium News Articles.
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Study of supergiant star Betelgeuse unveils the cause of its pulsations
Betelgeuse is normally one of the brightest, most recognizable stars of the winter sky, marking the left shoulder of the constellation Orion. But lately, it has been behaving strangely: an unprecedentedly large drop in its brightness has been observed in early 2020 (Figure 1), which has prompted speculation that Betelgeuse may be about to explode. (2021-02-08)

SARS-CoV-2 under the helium ion microscope for the first time
Scientists at Bielefeld University's Faculty of Physics have succeeded for the first time in imaging the SARS-CoV-2 coronavirus with a helium ion microscope. In contrast to the more conventional electron microscopy, the samples do not need a thin metal coating in helium ion microscopy. This allows interactions between the coronaviruses and their host cell to be observed particularly clearly. The findings have been published in the Beilstein Journal of Nanotechnology. (2021-02-04)

Size of helium nucleus measured more precisely than ever before
In experiments at the Paul Scherrer Institute PSI, an international research collaboration has measured the radius of the atomic nucleus of helium five times more precisely than ever before. With the aid of the new value, fundamental physical theories can be tested and natural constants can be determined even more precisely (2021-01-27)

What's in a name? A new class of superconductors
A new theory that could explain how unconventional superconductivity arises in a diverse set of compounds might never have happened if physicists Qimiao Si and Emilian Nica had chosen a different name for their 2017 model of orbital-selective superconductivity. (2021-01-25)

Helium nuclei at the surface of heavy nuclei discovered
Scientists are able to selectively knockout nucleons and preformed nuclear clusters from atomic nuclei using high-energy proton beams. In an experiment the existence of preformed helium nuclei at the surface of several tin isotopes could be identified in a reaction. The results confirm a theory, which predicts the formation of helium clusters in low-density nuclear matter and at the surface of heavy nuclei. (2021-01-15)

Physicists propose a new theory to explain one dimensional quantum liquids formation
Researchers from the Institute of Cosmos Sciences of the University of Barcelona present a microscopic theory of lattice quantum droplets which explains the formation of a new type of quantum droplets that has been experimentally observed in ultracold atomic systems. (2021-01-15)

Limits of atomic nuclei predicted
Novel calculations have enabled the study of nearly 700 isotopes between helium and iron, showing which nuclei can exist and which cannot. In an article published in Physical Review Letters, scientists from TU Darmstadt, the University of Washington, the Canadian laboratory TRIUMF, and the University of Mainz report how they simulated for the first time using innovative theoretical methods a large region of the chart of nuclides based on the theory of the strong interaction. (2021-01-13)

Quantum wave in helium dimer filmed for the first time
For the first time, an international team of scientists from Goethe University and the University of Oklahoma has succeeded in filming quantum physical effects on a helium dimer as it breaks apart. The film shows the superposition of matter waves from two simultaneous events that occur with different probability: The survival and the disintegration of the helium dimer. This method might in future make it possible to track experimentally the formation and decay of quantum Efimov systems. (2020-12-23)

Characterising cold fusion in 2D models
Through a study published in EPJ D, researchers show theoretically how cold fusion driven by muon capture would unfold within 2D systems, without any need for approximations. (2020-12-16)

Detecting solar neutrinos with the Borexino experiment
A paper published in EPJ C by a team of authors including XueFeng Ding, Postdoc Associate of Physics at Princeton University, United States, documents the attempts of the Borexino experiment to measure low-energy neutrinos from the sun's carbon-nitrogen-oxygen (CNO) cycle for the first time. (2020-12-04)

Hubble captures unprecedented fading of Stingray nebula
Astronomers have caught a rare look at a rapidly fading shroud of gas around an aging star. Archival data from NASA's Hubble Space Telescope reveal that the nebula Hen 3-1357, nicknamed the Stingray nebula, has faded precipitously over just the past two decades. Witnessing such a swift rate of change in a planetary nebula is exceeding rare, say researchers. (2020-12-04)

Scientists solve big limitation of stratospheric balloon payloads
Nearly all photons emitted after the Big Bang are now visible only at far-infrared wavelengths. Earth's atmosphere blocks most of this light, so scientists are turning to huge stratospheric balloons to explore it. However, it is quite difficult to cool a telescope the size of a living room to nearly absolute zero while flying it from a balloon. This is where the Balloon-Borne Cryogenic Telescope Testbed comes in. (2020-12-01)

Sun model completely confirmed for the first time
The Borexino experiment research team has succeeded in detecting neutrinos from the sun's second fusion process, the Carbon Nitrogen Oxygen cycle (CNO cycle) for the first time. This means that all of the theoretical predictions on how energy is generated within the sun have now also been experimentally verified. The findings are the result of years of efforts devoted to bringing the background sources in the energy range of the CNO neutrinos under control. (2020-11-26)

Solar CNO neutrinos observed for the first time
Scientists who are members of the Borexino Collaboration have provided the first experimental proof of the occurrence of the so-called CNO cycle in the Sun: They have managed to directly detect the distinctive neutrinos generated during this fusion process. This is an important milestone on the route to better understanding the fusion processes that occur in the Sun. The Borexino Collaboration's findings have been published in the latest issue of the journal Nature. (2020-11-25)

Neutrinos yield first experimental evidence of catalyzed fusion dominant in many stars
An international team of about 100 scientists of the Borexino Collaboration, including particle physicist Andrea Pocar at the University of Massachusetts Amherst, report in Nature this week detection of neutrinos from the sun, directly revealing for the first time that the carbon-nitrogen-oxygen (CNO) fusion-cycle is at work in our sun. (2020-11-25)

Plasma treatments quickly kill coronavirus on surfaces
Researchers from UCLA believe using plasma could promise a significant breakthrough in the fight against the spread of COVID-19. In Physics of Fluids, modeling conducted showed strains of the coronavirus on surfaces like metal, leather, and plastic were killed in as little as 30 seconds of treatment with argon-fed, cold atmospheric plasma. The researchers used an atmospheric pressure plasma jet they built with a 3D printer to spray surfaces that were treated with SARS-CoV-2 cultures. (2020-11-10)

No matter the size of a nuclear party, some protons and neutrons will pair up and dance
No matter the size of a nuclear party, certain protons and neutrons will always pair up and dance, a new MIT study finds. The results will help map the workings within neutron stars and heavy radioactive nuclei. (2020-11-09)

Low-metallicity globular star cluster challenges formation models
On the outskirts of the nearby Andromeda Galaxy, researchers have unexpectedly discovered a globular cluster (GC) - a massive congregation of relic stars - with a very low abundance of chemical elements heavier than hydrogen and helium (known as its metallicity), according to a new study. (2020-10-15)

Anemic star cluster breaks metal-poor record
In a surprising discovery, astronomers using two Maunakea Observatories - W. M. Keck Observatory and Canada-France-Hawaii Telescope (CFHT) - have found a star cluster in the Andromeda Galaxy that contains a record-breaking low amount of metals, calling into question the so-called 'metallicity-floor' for massive globular star clusters. (2020-10-15)

Helium, a little atom for big physics
Helium is the simplest multi-body atom. Its energy levels can be calculated with extremely high precision only relying on a few fundamental physical constants and the quantum electrodynamics (QED) theory. This makes the helium atom a very good platform for testing QED and these constants. A review of recent studies of helium atom precision spectroscopy towards this direction is presented in the National Science Review. (2020-09-28)

Scientists achieve higher precision weak force measurement between protons, neutrons
Through a one-of-a-kind experiment at Oak Ridge National Laboratory, nuclear physicists have precisely measured the weak interaction between protons and neutrons. The result quantifies the weak force theory as predicted by the Standard Model of Particle Physics. (2020-09-24)

Why there is no speed limit in the superfluid universe
Physicists from Lancaster University have established why objects moving through superfluid helium-3 lack a speed limit; exotic particles that stick to all surfaces in the superfluid. The discovery may guide applications in quantum technology, even quantum computing, where multiple research groups already aim to make use of these unusual particles. (2020-09-21)

Mineral undergoes self-healing of irradiation damage
Several minerals suffer radioactive self-irradiation and hence experience long-term changes of their properties. The mineral monazite virtually behaves ''just alike Camembert cheese in which holes are drilled'': Existing radiation damage heals itself. An international research team led by Lutz Nasdala, Institute of Mineralogy and Crystallography, University of Vienna, conducted an ion-irradiation study that has unravelled the causes of the self-healing of monazite. Results were published in ''Scientific Reports''. (2020-09-09)

First ever observation of 'time crystals' interacting
For the first time ever, scientists have witnessed the interaction of a new phase of matter known as 'time crystals'. The discovery may lead to applications in quantum information processing. First theorised in 2012 by Nobel Laureate Frank Wilczek and identified in 2016, time crystals exhibit the bizarre property of being in constant, repeating motion in time despite no external input. (2020-08-17)

NASA sounding rocket finds helium structures in sun's atmosphere
Helium is the second most abundant element in the universe after hydrogen. But scientists aren't sure just how much there actually is in the Sun's atmosphere. NASA's HERSCHEL sounding rocket has taken the first global measurements of helium in the extended solar atmosphere - a key piece of information for understanding our space environment. (2020-08-07)

Surprisingly young galaxy breaks low-oxygen record
A galaxy in the constellation Hercules that only recently started making stars has broken the record for having the lowest level of oxygen ever seen in a young galaxy. Astronomers used two Maunakea Observatories combined with machine learning to find the rare object. (2020-07-31)

TU Graz researchers synthesize nanoparticles tailored for special applications
''Core-shell'' clusters pave the way for new efficient nanomaterials that make catalysts, magnetic and laser sensors or measuring devices for detecting electromagnetic radiation more efficient. (2020-07-30)

The stars that time forgot
Scientists led by astronomers at the University of Sydney and Carnegie Observatories have found the remnant of strange dismembered globular cluster at the edge of the Milky Way, upending theories about how heavy elements formed in early stars. (2020-07-29)

Could mini-Neptunes be irradiated ocean planets?
Many exoplanets known today are ''super-Earths'', with a radius 1.3 times that of Earth, and ''mini-Neptunes'', with 2.4 Earth radii. Mini-Neptunes, which are less dense, were long thought to be gas planets, made up of hydrogen and helium. Now, scientists at the Laboratoire d'Astrophysique de Marseille (CNRS/Aix-Marseille Université/Cnes) have examined a new possibility, namely that the low density of mini-Neptunes could be explained simply by the presence of a thick layer of water. (2020-07-20)

First exposed planetary core discovered
Researchers led by the University of Warwick have discovered the first exposed core of an exoplanet, which provides an unprecedented glimpse inside the interior of a planet. Christoph Mordasini from the University of Bern is leading the theoretical interpretation of this discovery. (2020-07-01)

Atomic physics: Radiation pressure with recoil
Light exerts a certain amount of pressure onto a body: sun sails could thus power space probes in the future. However, when light particles (photons) hit an individual molecule and knock out an electron, the molecule flies toward the light source. Atomic physicists at Goethe University have now observed this for the first time, confirming a 90 year-old theory. (2020-06-15)

Physicists study mirror nuclei for precision theory test
A precision measurement of helium and hydrogen mirror isotopes reveals new questions in understanding of nuclear structure. The research, carried out at the Department of Energy's Thomas Jefferson National Accelerator Facility, was recently published as an editors' suggested read in Physical Review Letters. (2020-06-08)

Scientists decipher the role of carbon and the break-up of continents
An international collaboration has led scientists to new insights into the storage and dynamic transfer of carbon below thick and very old continental crust currently published in the journal Nature titled, Displacement of cratonic mantle and lithospheric channeling concentrates deep carbon during continental rifting. (2020-06-03)

Astronomers capture a pulsar 'powering up'
A Monash-University-led collaboration has, for the first time, observed the full, 12-day process of material spiralling into a distant neutron star, triggering an X-ray outburst thousands of times brighter than our Sun. (2020-06-02)

A special elemental magic
Kyoto University physicists develop a 'nuclear periodic table'. While the traditional table is based on the behavior of electrons in an atom, this new table is based on the protons in the nucleus. Protons have different stable magic numbers, and the table highlights alternative ways to illustrate the laws of nature. (2020-05-27)

The great unconformity
The geologic record is exactly that: a record. The strata of rock tell scientists about past environments, much like pages in an encyclopedia. Except this reference book has more pages missing than it has remaining. So geologists are tasked not only with understanding what is there, but also with figuring out what's not, and where it went. (2020-05-07)

Breathing during exercise is harder for women than men
While both sexes have the capacity for phenomenal athletic achievements, women on average must work harder to breathe during strenuous exercise compared to men, according to new research. (2020-04-27)

New 'brick' for nanotechnology: Graphene Nanomesh
Researchers at Japan advanced institute of science and technology (JAIST) successfully fabricated suspended graphene nanomesh (GNM) by using the focused helium ion beam technology. The 2D array of 6nm diameter nanopores were patterned on a large-area suspended graphene uniformly. By systematically controlling the pitch from 15 nm to 50 nm, a series of stable GNM devices were achieved. This technology provides a new approach to explore nanoscale thermal engineering, advanced sensing, and quantum technology. (2020-04-20)

Surfing the waves: Electrons break law to go with the flow
Researchers measure how fluid changes the movement of electrons. (2020-03-30)

Researchers observe ultrafast processes of single molecules for the first time
Graz University of Technology researchers describe in Physical Review Letters how a molecule moves in the protective environment of a quantum fluid. (2020-03-23)

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