6533b839fe1ef96bd12a6e95

RESEARCH PRODUCT

Absorber materials for low-energy neutrons—Theoretical and experimental studies

D. BroseP. GeltenbortC. Plonka-spehrT.-h. Reichert

subject

PhysicsNuclear and High Energy PhysicsLithium stearatebusiness.industryNeutron scatteringNeutron temperaturechemistry.chemical_compoundNeutron captureOpticschemistryUltracold neutronsNeutron detectionNeutronAtomic physicsAbsorption (electromagnetic radiation)businessInstrumentation

description

Abstract 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.

yearjournalcountryeditionlanguage
2012-02-01Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
https://doi.org/10.1016/j.nima.2011.11.046