Lifeboat Foundation: Safeguarding Humanity
Toggle light / dark theme

Blog

Category: nuclear energy

Reactor-grade fusion plasma: First high-precision measurement of potential dynamics

Nuclear fusion, which operates on the same principle that powers the sun, is expected to become a sustainable energy source for the future. To achieve fusion power generation, it is essential to confine plasma at temperatures exceeding one hundred million degrees using a magnetic field and to maintain this high-energy state stably.

A key factor in accomplishing this is the inside the plasma. This potential governs the transport of particles and energy within the plasma and plays a crucial role in establishing a state in which energy is effectively confined and prevented from escaping. Therefore, accurately measuring the internal plasma potential is essential for improving the performance of future fusion reactors.

A non-contact diagnostic technique called the heavy ion beam probe (HIBP) is used to measure plasma potential directly. In this method, negatively charged (Au⁻) are accelerated and injected into the plasma.

How Do Quarks Really Move? New Theory Unlocks Decades-Old Physics Mystery

Nuclear physicists have developed a new theoretical framework that allows them to calculate a crucial quantity for understanding the three-dimensional movement of quarks inside a proton. Using this innovative method, researchers have created a far more precise picture of the quarks’ transverse motion, the movement that occurs around a proton’s spin axis and at right angles to its forward direction.

The latest calculations align closely with model-based reconstructions derived from particle collision data. They are especially effective for describing quarks with low transverse momentum, a region where older techniques lacked precision. Scientists plan to use this refined approach to better predict the full 3D behavior of quarks and the gluons that bind them in upcoming collider experiments.

Understanding the source of proton spin is one of the key scientific objectives of the upcoming Electron-Ion Collider (EIC). At this facility, collisions between spin-aligned protons and high-energy electrons will make it possible to measure the transverse motion of quarks and gluons within protons with remarkable accuracy.

Nuclear startup that’s suing NRC raises $130 million with backing from Anduril’s Palmer Luckey and senior Palantir executive

Doug Philippone, co-founder of Snowpoint and former head of global defense at Palantir, will also join Valar’s board of directors.

Valar is one of several nuclear startups that hopes to benefit from President Trump’s push to deploy new reactor technology in the U.S. by cutting regulations and accelerating approvals.

Based outside Los Angeles, Valar is one of several reactor developers and states that are suing the Nuclear Regulatory Commission over its licensing process for small reactor designs. The parties to the suit are seeking a resolution with the NRC in the wake of Trump’s executive order that would overhaul the regulator. The case has been temporarily paused due to the government shutdown.

Functionally dominant hotspot mutations of mitochondrial ribosomal RNA genes in cancer

To study selection for somatic single nucleotide variants (SNVs) in tumor mtDNA, we identified somatic mtDNA variants across primary tumors from the GEL cohort (n = 14,106). The sheer magnitude of the sample size in this dataset, in conjunction with the high coverage depth of mtDNA reads (mean = 15,919×), enabled high-confidence identification of mtDNA variants to tumor heteroplasmies of 5%. In total, we identified 18,104 SNVs and 2,222 indels (Supplementary Table 1), consistent with previously reported estimates of approximately one somatic mutation in every two tumors1,2,3. The identified mutations exhibited a strand-specific mutation signature, with a predominant occurrence of CT mutations on the heavy strand and TC on the light strand in the non-control region that was reversed in the control region2 (Extended Data Fig. 1a, b). These mutations occur largely independently of known nuclear driver mutations, with the exception of a co-occurrence of TP53 mutation and mtDNA mutations in breast cancer (Q = 0.031, odds ratio (OR) = 1.43, chi-squared test) (Extended Data Fig. 2a and Supplementary Table 4).

Although the landscape of hotspot mutations in nuclear-DNA-encoded genes is relatively well described, a lack of statistical power has impeded an analogous, comprehensive analysis in mtDNA16,17. To do so, we applied a hotspot detection algorithm that identified mtDNA loci demonstrating a mutation burden in excess of the expected background mutational processes in mtDNA (Methods). In total, we recovered 138 unique statistically significant SNV hotspots (Q 0.05) across 21 tumor lineages (Fig. 1a, b and Supplementary Table 2) and seven indel hotspots occurring at homopolymeric sites in complex I genes, as previously described by our group (Extended Data Fig. 2b and Supplementary Table 3). SNV hotspots affected diverse genetic elements, including protein-coding genes (n = 96 hotspots, 12 of 13 distinct genes), tRNA genes (n = 8 hotspots, 6 of 22 distinct genes) and rRNA genes (n = 34 hotspots, 2 of 2 genes) (Fig. 1b, c, e).

Trump directs Pentagon to start testing nuclear weapons

President Trump said on Wednesday that he has instructed the Defense Department (DOD) to immediately begin testing U.S. nuclear weapons on an equal basis to China and Russia.

‘The United States has more Nuclear Weapons than any other country,’ Trump wrote. ‘This was accomplished, including a complete update and renovation of existing weapons, during my First Term in office. Because of the tremendous destructive power, I HATED to do it, but had no choice! Russia is second, and China is a distant third, but will be even within 5 years.’…

…Trump’s announcement on TruthSocial came shortly before he was slated to meet face-to-face with Chinese President Xi Jinping for the first time since 2019 in South Korea on Thursday.

Hyundai joins US’ 11 gigawatt nuclear reactor project in Texas

Hyundai Engineering & Construction (Hyundai E&C) has taken a major step in expanding its global nuclear energy footprint.

On October 26, the company announced that it signed a basic design contract with Fermi America, a U.S.-based energy development firm, for the construction of four large nuclear reactors in Texas. The project will form part of what is expected to be the world’s largest integrated energy and artificial intelligence (AI) campus.

US taps 11 nuclear reactor projects to speed up clean energy goals

US taps 11 firms to fast-track advanced nuclear reactor projects by 2026.

The United States has picked 11 advanced reactor projects to begin President Trump’s Nuclear Reactor Pilot Program.

The US Department of Energy (DOE) announced on Tuesday that it will work, alongside the industry, with these 11 projects to construct, operate, and achieve criticality of at least three test reactors using the DOE authorization process by July 4, 2026.

The selection is a major step towards streamlining nuclear reactor testing and opening a new pathway toward fast-tracking commercial licensing activities.

Nuclear power in your pocket? 50-year battery innovation

While the technology of nuclear batteries has been available since the 1950s, today’s drive to electrify and decarbonize increases the impetus to find emission-free power sources and reliable energy storage. As a result, innovations are bringing renewed focus to nuclear energy in batteries.

Nuclear batteries — those using the natural decay of radioactive material to create an electric current — have been used in space applications or remote operations such as arctic lighthouses, where changing a battery is difficult or even impossible. The Mars Science Laboratory rover, for example, uses radioisotopic power systems (RPS), which convert heat from radioactive decay into electricity via a thermoelectric generator. Betavolt’s innovation, 3, is a betavoltaic battery that uses beta particles rather than heat as its energy source. (Probably a repost from March 11 2024)

There are additional challenges that hinder the wider usage of these and all types of nuclear batteries, particularly material supply and discomfort with the use of radioactive materials. Yet, the physical and materials science behind this technology could unlock important advances for CO2-free energy and provide power for applications where currently available energy storage technologies are insufficient.

How do betavoltaic batteries work?

Betavoltaic batteries contain radioactive emitters and semiconductor absorbers. As the emitter material naturally decays, it releases beta particles, or high-speed electrons, which strike the absorber material in the battery, separating electrons from atomic nuclei in the semiconductor absorber. Separation of the resulting electron-hole pairs generates an electric current in the absorber, resulting in electrical power that can be delivered by the battery.

/* */