Method for Finding a Target Material and Target Material for a Neutron Source

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The patent describes a new method for determining optimized target materials—composed of multiple solid layers—for use in ion-accelerator-based neutron sources. By computationally selecting and arranging different elemental layers according to specific physics criteria, the invention maximizes neutron yield while minimizing undesirable radioactive byproducts, such as tritium. The process allows for precise tailoring of target compositions to operational needs, offering alternatives to traditional toxic and hard-to-dispose-of materials like beryllium and lithium.

Use CasesContent extracted from patent full text and abstract with AI.

• Neutron sources for scientific research, such as neutron scattering experiments in material science, chemistry, and biology.
• Medical applications where specific neutron sources are required, including cancer therapy (e.g., BNCT).
• Industrial neutron generation for non-destructive testing, imaging, or activation analysis.
• Production of radioisotopes for medicine or industry using optimized neutron targets.
• Development and upgrading of nuclear facilities or test reactors seeking safer and higher-output neutron production solutions.

BenefitsContent extracted from patent full text and abstract with AI.

• Increases neutron yield compared to conventional (single-element) targets, leading to more efficient neutron generation.
• Reduces production of hazardous radioactive byproducts, especially tritium, enhancing operational safety and easing waste disposal.
• Enables replacement of toxic or critical materials like beryllium with safer and more accessible alternatives.
• Offers customizable target design tailored to specific neutron energy ranges and operational priorities (maximizing output or minimizing radioactivity as required).
• Facilitates regulatory compliance and environmental protection by reducing hazardous material use and radioactive waste generation.

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Patent Abstract

The invention relates to a method for finding a target material and a target material. According to the invention, a layer sequence for a target material is determined in an iterative method which makes use of Formula 1, wherein (E, ΔE) the number of neutrons produced, i = index designating the layer, namely 1,2,3 .....n, N the Avogadro constant, ρ (g cm) the density of the selected element, M (g) the molar mass of the selected element, E the entry energy of the primary ion into layer i, ΔE the energy loss of the primary ion during passage through the layer thickness δ, δ (E, ΔE) (cm) the layer thickness of the selected element for an energy loss of the ions ΔE at an entry energy of E, σ (E, ΔE) (cm) the integral cross section over the energy range ΔE for the emission probability of one or more neutrons from the interaction between ions and atomic nuclei of element i. The layers determined in this way are assembled into a target material.