用于超冷中子应用的氘代聚乙烯涂层
Deuterated polyethylene coatings for ultra-cold neutron applications
摘要：
本文报道了氘代聚乙烯（dPE）作为超冷中子（UCN）贮存和运输涂层材料的制备和应用。费米势为214~neV，壁损耗系数$η$为1.3 $\cdot$ × 10 $^4$.涂层技术允许广泛的应用和新的可能性在这个物理领域。特别是，灵活和准无质量的UCN导轨与无狭缝百叶窗和无狭缝UCN存储体积成为可能。这些特性使得在下一代测量中子的电偶极矩的使用。
英文摘要：
We report on the fabrication and use of deuterated polyethylene (dPE) as a coating material for ultra-cold neutron (UCN) storage and transport. The Fermi potential has been determined to be 214~neV and the wall loss coefficient $η$ is 1.3$\cdot$10$^4$ per wall collision. The coating technique allows for a wide range of applications and new possibilities in this field of physics. In particular, flexible and quasi-massless UCN guides with slit-less shutters and slit-less UCN storage volumes become possible. These properties enable the use in next-generation measurements of the electric dipole moment of the neutron.
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