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Home Science News Technology and Engineering

Improved plutonium production with enhanced efficiency and reduced costs

June 4, 2024
in Technology and Engineering
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Plutonium-238 that continuously releases heat
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Have you ever wondered what does a spacecraft and a pacemaker have in common? Both are powered by plutonium-238 (238Pu), a versatile isotope, known for its ideal heating properties. Recent research unveils a new high-resolution neutronics model that significantly improves the production of 238Pu, increasing yield by close to 20% in high-flux reactors and reducing costs. This potential breakthrough could revolutionize a wide range of technological production, from deep-space exploration to life-saving medical device.

Plutonium-238 that continuously releases heat

Credit: Dr. Qingquan Pan

Have you ever wondered what does a spacecraft and a pacemaker have in common? Both are powered by plutonium-238 (238Pu), a versatile isotope, known for its ideal heating properties. Recent research unveils a new high-resolution neutronics model that significantly improves the production of 238Pu, increasing yield by close to 20% in high-flux reactors and reducing costs. This potential breakthrough could revolutionize a wide range of technological production, from deep-space exploration to life-saving medical device.

Enhancing 238Pu Production with High-Resolution Modeling

A team of nuclear scientist from Shanghai Jiao Tong University and Nuclear Power Institute of China reported that their methods — filter burnup, single-energy burnup, and burnup extremum analysis — enhance the precision of 238Pu production, leading to a significant 18.81% increase in yield. This refinement eliminates theoretical approximations previously common in this field, allowing for a spectrum resolution of approximately 1 eV. Qingquan Pan, the study’s lead researcher, remarked, “Our work not only pushes the boundaries of isotopic production technologies but also sets a new perspective for how we approach nuclear transmutation in high-flux reactors.”

The Journey of Neutron Spectrum Analysis

Plutonium-238 has a pivotal role in powering devices where traditional batteries cannot suffice, such as in deep-space missions and medical devices. Despite its importance, the production of 238Pu has been plagued by inefficiencies and high costs due to a lack of precise models. The team’s approach analyzed the complex chain reactions within nuclear reactors, creating a model that not only enhances current production methods but also reduces the associated gamma radiation impact, making the process safer and more environmentally friendly.

A Three-Fold Approach

The study compared three distinct methods. The filter burnup and single-energy burnup methods provide detailed insights into the energy spectrum’s impact on nuclear reactions, while the burnup extremum analysis method evaluates how changes over irradiation time affect overall production efficiency. These techniques collectively enable precise control and optimization of neutron reactions within reactors.

From Space Exploration to Pacemakers

The implications of this research are vast. Enhanced 238Pu production directly supports the operation of devices in harsh, inaccessible environments. “This model could significantly impact not only future space missions, ensuring longer-lasting power for spacecraft but also the reliability of medical devices like cardiac pacemakers,” says Pan. The refined production process means that more 238Pu can be produced with fewer resources, and enhancing the safety of production facilities. reducing environmental impact and enhancing the safety of production facilities.

New Horizons in Isotope Production

Looking forward, the research team plans to expand their model’s applications. “Our next steps involve refining target design from an engineering perspective, optimizing the neutron spectrum used in production, and constructing dedicated irradiation channels in high-flux reactors,” Pan added. These developments will not only streamline the production of 238Pu but could also be adapted for other scarce isotopes, promising widespread impacts across multiple scientific and medical fields.

A Brighter, Safer Future in Energy and Medicine

The development of a high-resolution neutronics model marks a significant progress in nuclear science, with implications that extend far beyond the laboratory. When this model is applied to other scarce isotopes, its impact on both technology and industry is expected to expand, supporting significant advancements in energy, medicine, and space technology. As the world leans more towards sophisticated energy solutions, the work of Pan and his team underscores the crucial role of innovative nuclear research in securing a sustainable and technologically advanced future.

 



Journal

Nuclear Science and Techniques

DOI

10.1007/s41365-024-01461-x

Method of Research

Computational simulation/modeling

Subject of Research

Not applicable

Article Title

High-resolution neutronics model for 238Pu production in high-flux reactors

Article Publication Date

3-Jun-2024

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