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Archive for the ‘particle physics’ category: Page 5

Dec 8, 2019

Using Quantum Mechanics to Trigger Atomic Fusion

Posted by in categories: nuclear energy, particle physics, quantum physics, space

Nuclear physics usually involves high energies, as illustrated by experiments to master controlled nuclear fusion. One of the problems is how to overcome the strong electrical repulsion between atomic nuclei which requires high energies to make them fuse. But fusion could be initiated at lower energies with electromagnetic fields that are generated, for example, by state-of-the-art free electron lasers emitting X-ray light. Researchers at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) describe how this could be done in the journal Physical Review C.

During nuclear fusion two atomic nuclei fuse into one new nucleus. In the lab this can be done by particle accelerators, when researchers use fusion reactions to create fast free neutrons for other experiments. On a much larger scale, the idea is to implement controlled fusion of light nuclei to generate power – with the sun acting as the model: its energy is the product of a series of fusion reactions that take place in its interior.

For many years, scientists have been working on strategies for generating power from fusion energy. “On the one hand we are looking at a practically limitless source of power. On the other hand, there are all the many technological hurdles that we want to help surmount through our work,” says Professor Ralf Schützhold, Director of the Department of Theoretical Physics at HZDR, describing the motivation for his research.

Dec 7, 2019

Have Scientists Cracked One Of The Biggest Mysteries Of Modern Physics?

Posted by in categories: cosmology, particle physics

So where did the antimatter go?

This question is one of the biggest mysteries of modern science, and the answer is unknown. Something happened in the earliest moments of the universe to make the antimatter disappear. From our best current measurements of the primordial radiation of the Big Bang (called the cosmic microwave background radiation, or CMB), something tilted the scales in favor of matter, with the ratio of for every three billion antimatter particles, there were three billion and one matter particles. The two sets of three billions cancelled and made the CMB, and the remaining tiny amount of matter went on to form the stars and galaxies that we see in our telescopes today. For this to happen, some physical process had to favor matter over antimatter.

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Dec 7, 2019

Dramatically Enhanced Spin Dynamo with Plasmonic Diabolo Cavity

Posted by in categories: futurism, particle physics

The applications of spin dynamos, which could potentially power complex nanoscopic devices, have so far been limited owing to their extremely low energy conversion efficiencies. Here, we present a unique plasmonic diabolo cavity (PDC) that dramatically improves the spin rectification signal (enhancement of more than three orders of magnitude) under microwave excitation; further, it enables an energy conversion efficiency of up to ~0.69 mV/mW, compared with ~0.27 μV/mW without a PDC. This remarkable improvement arises from the simultaneous enhancement of the microwave electric field (~13-fold) and the magnetic field (~195-fold), which cooperate in the spin precession process generates photovoltage (PV) efficiently under ferromagnetic resonance (FMR) conditions. The interplay of the microwave electromagnetic resonance and the ferromagnetic resonance originates from a hybridized mode based on the plasmonic resonance of the diabolo structure and Fabry-Perot-like modes in the PDC. Our work sheds light on how more efficient spin dynamo devices for practical applications could be realized and paves the way for future studies utilizing both artificial and natural magnetism for applications in many disciplines, such as for the design of future efficient wireless energy conversion devices, high frequent resonant spintronic devices, and magnonic metamaterials.

In 2007, Y. S. Gui, et al.1 first proposed and demonstrated the spin dynamo, first proposed and demonstrated the spin dynamo, is constructed that provides a new and interesting way to generate direct current via spin precessions to locally power nanoscopic devices and for future applications such as wireless energy conversion. Compared with the spin-driven currents in semiconductors2, spin dynamos are based on ferromagnetic materials1 or spin-torque diodes3, 4, which feature a much higher current/power ratio coupled with a much smaller internal resistance. However, the reported works are limited to sophisticated waveguide couplings (and therefore to wires), such as coplanar waveguides (CPWs)5, 6, microstrip lines7, 8, and bias Tees3, 9 12, to in-couple radio-frequency or microwave electromagnetic waves. Free space direct illumination has rarely been studied, despite its excellent suitability for wireless energy conversion.

Dec 6, 2019

SLAC scientists invent a way to see attosecond electron motions with an X-ray laser

Posted by in category: particle physics

Called XLEAP, the new method will provide sharp views of electrons in chemical processes that take place in billionths of a billionth of a second and drive crucial aspects of life.

Dec 6, 2019

What is the Higgs boson and why does it matter?

Posted by in categories: alien life, particle physics

The higgs boson is most likely the greatest particle because it could allow for antigravity because it turns off the mass of an object. Basically it would be the master key for even understanding the dimensions of physics. Simply by allowing a near genesis. It can essentially allow for matter creation a sorta building block for creation. It is one of the greatest particles ever discovered. A particle so powerful that when harnessed it would almost allow for anything to happen. You could have crispr teleportation with higgs field dampening. Let’s say that myth is real then if it were real then it would lead to a particle like the higgs boson. Once harnessed it could allow for alien like technologies essentially a very powerful particle to allow to true impossibilities. I think even in a grain of sand we can find endless possibilities which is proof evident of something beyond understanding. Some have said that we started out in just hydrogen but the physics created the universe. Which would mean once the higgs is harnessed it could allow for creation technology or what the exterrestials knew for generations that we are never alone the universe is filled with wonder. Basically the higgs would allow for antigravity but all the mythological things. It would prove the existence of aliens even god most likely. Science could prove the most important thing that it could bring civilization into a new level technology no longer bound by terrestrial things but essentially it could allow for anything once harnessed.


Theoretical physicist Lawrence Krauss explains the possible meaning and significance of finding the Higgs.

Dec 5, 2019

Fusion: Nuclear physics usually involves high energies, as illustrated by experiments to master controlled nuclear fusion

Posted by in categories: nuclear energy, particle physics

One of the problems is how to overcome the strong electrical repulsion between atomic nuclei which requires high energies to make them fuse. But fusion could be initiated at lower energies with electromagnetic fields that are generated, for example, by state-of-the-art free electron lasers emitting X-ray light. Researchers at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) describe how this could be done in the journal Physical Review C.

During two fuse into one new nucleus. In the lab this can be done by , when researchers use reactions to create fast free neutrons for other experiments. On a much larger scale, the idea is to implement controlled fusion of light nuclei to generate power—with the sun acting as the model: its is the product of a series of fusion reactions that take place in its interior.

For many years, scientists have been working on strategies for generating power from fusion energy. “On the one hand we are looking at a practically limitless source of power. On the other hand, there are all the many technological hurdles that we want to help surmount through our work,” says Professor Ralf Schützhold, Director of the Department of Theoretical Physics at HZDR, describing the motivation for his research.

Dec 5, 2019

Scientists have found out why photons from other galaxies do not reach Earth

Posted by in categories: computing, mathematics, particle physics, space

An international group of scientists, including Andrey Savelyev, associate professor of the Institute of Physical and Mathematical Sciences and Information Technologies of the IKBFU, has improved a computer program that helps simulate the behavior of photons when interacting with hydrogen spilled in intergalactic space. Results are published in the scientific journal Monthly Notices of the Royal Astronomical Society.

Andrey Saveliev states, “In the Universe there are extragalactic objects such as blazars, which very intensively generate a powerful gamma-ray flux, part of photons from this stream reaches the Earth, as they say, directly, and part are converted along the way into electrons, then again converted into photons and only then get to us. The problem here is that say that a certain number of photons should reach the Earth, and in fact it is much less.”

Scientists, according to Andrey Savelyev, today have two versions of why this happens. The first is that a , after being converted into an electron (and this, as is known, in contrast to a neutral photon, a charged particle) falls into a , deviates from its path and does not reach the Earth, even after being transformed again into the photon.

Dec 4, 2019

Surprising 1st results from NASA’s sun-skimming spacecraft

Posted by in categories: particle physics, space

CAPE CANAVERAL, Fla. (AP) — NASA’s sun-skimming spacecraft, the Parker Solar Probe, is surprising scientists with its unprecedented close views of our star.

Scientists released the first results from the mission Wednesday. They observed bursts of energetic particles never seen before on such a small scale as well as switchback-like reversals in the out-flowing solar magnetic field that seem to whip up the solar wind.

NASA’s Nicola Fox compared this unexpected switchback phenomenon to the cracking of a whip.

Dec 4, 2019

New Horizons may reach termination shock sooner than expected

Posted by in categories: particle physics, robotics/AI, space

An instrument aboard NASA’s New Horizons is sending back data that could help scientists predict when the unmanned deep-space probe will reach interstellar space. Using the Solar Wind Around Pluto (SWAP) instrument aboard the spacecraft, a team of researchers led by Southwest Research Institute are learning more about how the solar winds change in the outer regions of the solar system.

Though the solar system may look like a big ball of nuclear fire at the center surrounded by a scattering of tiny, solid objects sitting in a lot of very hard vacuum, all that nothingness is permeated by the solar winds – an unceasing flow of ionized particles from the Sun that forms an uneven bubble around our family of planets called the heliosphere.

The outer limit of the heliosphere is where it encounters materials from interstellar space. This is the point where the solar wind slow down to subsonic speeds due to interacting and then is stopped altogether by the interstellar medium. These two points are called, respectively, the termination shock and the heliopause.

Dec 2, 2019

Higgs Boson Mass Explained in New Theory

Posted by in category: particle physics

Three physicists have proposed a new solution to one of the deepest mysteries in particle physics: why the Higgs boson has such a tiny mass.

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