Absorber materials for low-energy neutrons¡ªTheoretical and experimental studies
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- 作者：D. Brose
- 关键词：Neutron detection ; Ultra-cold neutrons ; Neutron absorbers
- 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
- 出版年：2012
- 出版时间：1 February 2012
- 年：2012
- 卷：664
- 期：1
- 页码：353-357
- 全文大小：322 K
文摘
Absorber materials for low-energy neutrons are studied in the theoretical framework of quantum mechanics with a complex potential. Analytical expressions and numerical calculations of the neutron reflectivity for perpendicular and isotropic motion towards a surface for four different material classes are presented. Comparative experimental studies of four absorber materials have been carried out: Polyethylene, titanium, boron-10 and lithium stearate. In a quasi-storage experiment with ultracold neutrons the latter material features the highest absorption property.