Search results for plutonium 239

Environment Mar 19, 2024

How do we tell future generations about highly radioactive nuclear waste repositories?

In Europe, increasing efforts on climate change mitigation, a sudden focus on energy independence after Russia's invasion of Ukraine, and reported breakthroughs in nuclear fusion have sparked renewed interest in the potential ...

General Physics Sep 26, 2023

Chi-Nu experiment ends, bolsters nuclear security and energy reactors

The results of the Chi-Nu physics experiment at Los Alamos National Laboratory have contributed essential, never-before-observed data for enhancing nuclear security applications, understanding criticality safety and designing ...

Social Sciences May 4, 2022

'This black smoke rolling through the mulga': Almost 70 years on, it's time to remember the atomic tests at Emu Field

The name Emu Field does not have the same resonance as Maralinga in Australian history. It is usually a footnote to the much larger atomic test site in South Australia. However, the weapons testing that took place in October ...

General Physics Aug 6, 2019

Antineutrino detection could help remotely monitor nuclear reactors

Technology to measure the flow of subatomic particles known as antineutrinos from nuclear reactors could allow continuous remote monitoring designed to detect fueling changes that might indicate the diversion of nuclear materials. ...

Environment May 26, 2019

Under the dome: Fears Pacific nuclear 'coffin' is leaking

As nuclear explosions go, the US "Cactus" bomb test in May 1958 was relatively small—but it has left a lasting legacy for the Marshall Islands in a dome-shaped radioactive dump.

General Physics Aug 23, 2018

Theory aids analysis of nuclear materials

Nuclear emergency teams, safeguards specialists and others may one day benefit from an expanded nuclear fission chain theory and detectors developed by a team of Lawrence Livermore National Laboratory (LLNL) physicists.

Environment Sep 28, 2017

We may survive the Anthropocene, but need to avoid a radioactive 'Plutocene'

On January 27, 2017, the Bulletin of the Atomic Scientists moved the arms of its doomsday clock to 2.5 minutes to midnight – the closest it has been since 1953. Meanwhile, atmospheric carbon dioxide levels now hover above ...

General Physics Apr 5, 2017

New measurements suggest 'antineutrino anomaly' fueled by modeling error

Results from a new scientific study may shed light on a mismatch between predictions and recent measurements of ghostly particles streaming from nuclear reactors—the so-called "reactor antineutrino anomaly," which has puzzled ...

Materials Science Mar 9, 2017

Unexpected oxidation state for molecular plutonium discovered

Researchers at Los Alamos National Laboratory in collaboration with the University of California - Irvine (UCI) have uncovered a significant new chemical attribute of plutonium, the identification and structural verification ...

General Physics Dec 22, 2015

Researchers develop a new mathematical tool for analyzing and evaluating nuclear material

Lawrence Livermore National Laboratory scientists have created a new method for detecting and analyzing fission chains to assess and evaluate nuclear material.

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