Compound Refractive Lenses for Thermal Neutron Applications

Gary, C. K.

doi:10.2172/1104876

Cited by 2 publications

(1 citation statement)

References 4 publications

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“…In Small Angle Neutron Scattering (SANS) experiments, a compound refractive lens (CRL) is often used to focus an incident neutron beam. CRL devices use a series of lenses, in some cases up to 30 individual elements [3][4][5] . These devices, while effective, require large amounts of material to construct, resulting in a significant amount of beam attenuation.…”

Section: Introductionmentioning

confidence: 99%

Next-generation high transmission neutron optical devices utilizing micro-machined structures

Kapahi¹,

Sarenac²,

Bleuel³

et al. 2021

Preprint

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Neutrons have emerged as a unique probe at the forefront of modern material science, unrivaled in their penetrating abilities. A major challenge stems from the fact that neutron optical devices are limited to refractive indices on the order of n ≈ 1 ± 10 −5 . By exploiting advances in precision manufacturing, we have designed and constructed a micro-meter period triangular grating with a high aspect ratio of 14.3. The manufacturing quality is demonstrated with white-light interferometric data and microscope imaging. Neutron scattering experiment results are presented, showing agreement to refraction modelling. The capabilities of neutron Fresnel lenses based on this design are contrasted to existing neutron focusing techniques and the path separation of a prism-based neutron interferometer is estimated.

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Section: Introductionmentioning

confidence: 99%

Next-generation high transmission neutron optical devices utilizing micro-machined structures

Kapahi¹,

Sarenac²,

Bleuel³

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

High-Transmission Neutron Optical Devices Utilizing Micro-Machined Structures

Kapahi

Bleuel

Cory

et al. 2023

QuBS

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Neutrons are a powerful probe in material science with unique penetrating abilities. A major challenge stems from the fact that neutron optical devices are limited to refractive indices on the order of n≈1±10−5. By exploiting advances in precision manufacturing, we designed and constructed micro-meter period triangular grating with a high-aspect ratio of 14.3. The manufacturing quality is demonstrated with white-light interferometric data and microscope imaging. Neutron-scattering experiment results are presented, showing agreement with refraction modelling. The capabilities of neutron Fresnel prisms and lenses based on this design are contrasted with existing neutron focusing techniques, and the path separation of a prism-based neutron interferometer is estimated.

show abstract

Compound Refractive Lenses for Thermal Neutron Applications

Cited by 2 publications

References 4 publications

Next-generation high transmission neutron optical devices utilizing micro-machined structures

Next-generation high transmission neutron optical devices utilizing micro-machined structures

High-Transmission Neutron Optical Devices Utilizing Micro-Machined Structures

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