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Investigation of Solid D 2 for UCN Sources.
F Atchison1, K Bodek2, B van den Brandt1
1Paul Scherrer Institut, Villigen, Switzerland.
This study investigates ultra-cold neutrons (UCN) scattering in solid deuterium (sD2), crucial for UCN source yield. First measurements reveal the impact of sD2 crystal properties on neutron interactions.
Area of Science:
- Nuclear physics
- Materials science
Background:
- Solid deuterium (sD2) is a key material for next-generation ultra-cold neutron (UCN) sources.
- UCN scattering cross sections in sD2 are critical for determining UCN source yield but remain uncharacterized.
Purpose of the Study:
- To report the first experimental results on UCN interactions with sD2.
- To investigate the influence of sD2 crystal properties on UCN scattering and transmission.
Main Methods:
- Transmission and scattering experiments using cold, very cold, and ultra-cold neutrons.
- Optical studies including light transmission and Raman scattering to characterize sD2 crystal properties.
Main Results:
- Presents initial data on UCN scattering cross sections in sD2.
- Demonstrates a correlation between sD2 crystal properties and neutron interaction behavior.
Conclusions:
- The findings provide essential data for optimizing UCN source design.
- Understanding sD2 properties is vital for enhancing UCN production efficiency.
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