Archive for the ‘nuclear energy’ category: Page 11

Oct 14, 2022

The origin of our universe from the multiverse — with Laura Mersini-Houghton

Posted by in categories: cosmology, nuclear energy, quantum physics

Join cosmologist Laura Mersini-Houghton as she discusses her ground-breaking theory, and how her path from communist Albania helped her become one of the most courageous thinkers on the world stage of theoretical physics. Watch the Q&A for this video here:

Laura’s book “Before the Big Bang: The Origin of Our Universe from the Multiverse” is available to purchase now:
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Oct 12, 2022

Taking Control of Fusion Reactor Instabilities

Posted by in categories: nuclear energy, particle physics

A mechanism for preventing destructive instabilities in magnetically confined plasmas provides a new way for scientists to operate future nuclear-fusion reactors.

All magnetically confined plasmas naturally develop instabilities, regions where small perturbations grow rapidly [1]. Scientists have been looking for ways to prevent instabilities in a tokamak—a leading candidate for a fusion reactor—because the instabilities can cause substantial damage to the tokamak’s walls. Now Georg Harrer at the Vienna University of Technology and his colleagues have shown how these destructive instabilities can be avoided by adjusting the properties of the plasma and its confining magnetic field [2]. The researchers’ findings offer a fresh approach to running future fusion reactors.

A tokamak uses a powerful magnetic field to confine fusion fuel in the form of a plasma (a highly ionized gas) that is shaped like a ring donut. Instabilities that originate at the plasma edge (the “glaze” of the donut) are called edge-localized modes (ELMs) [3]. ELMs transport heat and particles along magnetic-field lines, moving them from the well-confined plasma core (the “filling” of the donut) to the divertor—a region of the tokamak’s walls. ELMs come in various sizes and frequencies (repetition rates). Their size, expressed as a percentage of the energy stored in the plasma core, strongly influences how much heat and how many particles will be deposited by each ELM in the divertor.

Oct 9, 2022

Ukraine nuclear plant has lost final external power link, UN watchdog says

Posted by in category: nuclear energy

BERLIN (AP) — Ukraine’s Zaporizhzhia nuclear power plant, the biggest in Europe, has lost its last remaining external power source as a result of renewed shelling and is now relying on emergency diesel generators, the U.N. nuclear watchdog said Saturday.

The International Atomic Energy Agency said the plant’s link to a 750-kilovolt line was cut at around 1 a.m. Saturday. It cited official information from Ukraine as well as reports from IAEA experts at the site, which is held by Russian forces.

All six reactors at the plant are shut down but they still require electricity for cooling and other safety functions. Plant engineers have begun work to repair the damaged power line and the plant’s generators — not all of which are currently being used — each have sufficient fuel for at least 10 days, the IAEA said.

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Oct 8, 2022

Russian nuclear submarine armed with ‘doomsday’ weapon disappears from Arctic harbor: report

Posted by in categories: drones, existential risks, military, nuclear energy

Is this a sign of nuclear escalation?

A top-of-the-line Russian nuclear-powered submarine has gone missing from its harbor in the Arctic along with its rumored “doomsday weapon,” according to multiple reports.

NATO has reportedly warned members that Russia’s Belgorod submarine no longer appeared to be operating out of its White Sea base, where it has been active since July. Officials warned that Russia may plan to test Belgorod’s “Poseidon” weapons system, a drone equipped with a nuclear bomb that Russia has claimed is capable of creating a “radioactive tsunami,” according to Italian media.

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Oct 7, 2022

A Micro Molten Salt Nuclear Reactor That Will Never Have A Meltdown Is In The Works

Posted by in categories: nuclear energy, transportation

BYU engineers design a molten-salt reactor that will never melt down and fits on a flatbed truck.

Developed at Brigham Young University, the micro-reactor can fit on a flatbed truck and produce enough energy to power 1,000 homes.

Oct 6, 2022

China has discovered a brand new Moon mineral

Posted by in categories: nuclear energy, space

Because the mineral changesite-(Y) contains the isotope helium-3, it could one day fuel nuclear fusion reactors.

Oct 6, 2022

Engineers created a safe micro-nuclear reactor that fits in the back of a truck

Posted by in categories: climatology, nuclear energy, sustainability

The new system uses molten salts instead of traditional fuel rods.

The world is rethinking nuclear power plants in the face of climate change. Your average plant produces 8,000 times more power than fossil fuels and is environmentally friendly. There’s one massive caveat, though, in the form of nuclear disasters, such as the 1986 Chernobyl incident and the 2011 Fukushima disaster.

Now, professor Matthew Memmott and colleagues from Bingham Young University (BYU) announced that they designed a new molten salt micro-reactor system that allows for safer nuclear energy production. As per a press release, it may also solve a number of other key issues related to nuclear energy production.

Continue reading “Engineers created a safe micro-nuclear reactor that fits in the back of a truck” »

Oct 6, 2022

This micro molten salt reactor is designed to fit on a truck

Posted by in categories: computing, nuclear energy

Small, safer vessels could be ‘silicon chip’ that ushers in new nuclear age.

Oct 3, 2022

How to 3D-Print One of the Strongest Stainless Steels

Posted by in categories: 3D printing, nuclear energy, transportation

For airliners, cargo ships, nuclear power plants and other critical technologies, strength and durability are essential. This is why many contain a remarkably strong and corrosion-resistant alloy called 17–4 precipitation hardening (PH) stainless steel. Now, for the first time ever, 17–4 PH steel can be consistently 3D-printed while retaining its favorable characteristics.

A team of researchers.

Oct 1, 2022

Scientists make massive breakthrough in nuclear fusion as ‘ignition’ is finally achieved

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

Scientists managed to start the same chemical process that powers the Sun on August 8, 2021, by putting more electricity into a tiny gold capsule than the entire US electric system could handle.

It is extremely astonishing how the power of 192 laser beams sparked the same thermonuclear fire that fuels the Sun for a nanosecond.

The Sun produces energy by hurling hydrogen atoms together, generating helium in the process. We are now closer than ever to being able to harness chemical reactions with enough force to power the Sun. This is possible because fusion power technology has advanced.

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