AWE scientists contribute to landmark scientific breakthrough 

A team of physicists, including scientists from AWE, has demonstrated for the first time a practical route to dramatically increasing the intensity of radiation achievable in the laboratory, an area of research that has enduring relevance to AWE’s mission. The results, published in Nature in April 2026, confirm long‑standing theoretical predictions in laser-plasma interaction physics, and opens new opportunities to probe the fundamental laws of physics. 

From Theory to Reality 

The research was led by Dr Robin Timmis and Professor Peter Norreys at the University of Oxford. Dr Timmis was an AWE‑sponsored DPhil student, jointly supervised by Professor Norreys and Ed Gumbrell from AWE. Robin recently received the Culham Thesis Prize for plasma science. The work published in Nature builds in part on research originating from her doctoral thesis. 

Cutting-Edge Experiments at National Facilities  

The experiments were carried out at the Science and Technology Facilities Council’s (STFC) Central Laser Facility, using the Gemini laser system. In addition to researchers from Oxford, the wider academic collaboration included teams from Queen’s University Belfast, the Central Laser Facility, three AWE scientists, and international partners from the US and Germany. 

The team exploited a process known as relativistic harmonic generation in laser-plasma interactions. In simple terms, the phenomenon can be likened to shining an intense laser at a mirror that is rushing towards it at great speed! 

By getting these effects working together at high efficiency for the first time, the team unlocked a route to creating by far the most intense radiation ever produced in a laboratory. The pioneering breakthrough provides new routes towards studying how light interactions with the vacuum at the quantum level. 

• The reflected light becomes significantly more energetic, shifting into the extreme ultraviolet and soft X-ray regions of the spectrum 

• The radiation pulses are compressed from femtoseconds (one quadrillionth of a second) to attoseconds (one thousandth of a femtosecond) 

• Under precisely tuned conditions, the interaction causes the “mirror” to deform in such a way that the reflected light waves combine into an extremely tight focal point 

The result is an unprecedented concentration of electromagnetic field intensity. 

A Record-Breaking Achievement 

By successfully combining these effects with high efficiency for the first time, the team has unlocked a pathway to producing the most intense radiation ever achieved in a laboratory setting. 

Insights from the Research Team 

Ed Gumbrell, AWE High Energy Density Physics Coordinator, Visiting Professor at Imperial College London and AWE lead on the experiment, said: “From the outset, Robin, Peter and I worked closely to design an experiment grounded in the detailed modelling Robin was carrying out.  After securing time on the Gemini laser, we joined forces with colleagues at Queen’s University Belfast, who had developed expertise in precisely controlling plasma conditions to maximise harmonic efficiency. 

“The results were extraordinary. Seeing such incredibly bright harmonic radiation was a defining moment, and the detailed experiments that followed revealed entirely new behaviour. This work is a scientific tour de force, and its publication in Nature reflects the exceptional computational and experimental leadership provided by Robin.” 

Strategic Importance and Future Impact 

Professor Andrew Randewich CBE, AWE Chief Research Officer, highlighted the broader significance of the achievement: 

“This is a fantastic achievement, which highlights the world‑class excellence of our scientists and the power of long‑term sustained collaboration with leading universities and national facilities. It not only validates years of theoretical work in laser-plasma physics, but also opens up exciting new frontiers in our ability to explore fundamental physics at extreme conditions that are key to our mission and future capability.” 

“My heartfelt congratulations to Ed Gumbrell, the AWE team and our academic partners for their brilliant work, which I am delighted to see published in Nature – a prestigious publication for UK science and endeavour.” 

Looking Ahead 

This pioneering work not only confirms decades of theoretical predictions but also establishes a powerful experimental platform for future discoveries. By enabling unprecedented access to extreme physical conditions, the research has the potential to reshape scientific understanding across multiple disciplines. 

From probing the quantum structure of space itself to advancing high-energy-density physics, the implications of this breakthrough are vast and places the UK and its collaborators at the forefront of global scientific innovation.