0000000000885399

AUTHOR

D. Brose

showing 2 related works from this author

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

2012

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.

PhysicsNuclear and High Energy PhysicsLithium stearatebusiness.industryNeutron scatteringNeutron temperaturechemistry.chemical_compoundNeutron captureOpticschemistryUltracold neutronsNeutron detectionNeutronAtomic physicsAbsorption (electromagnetic radiation)businessInstrumentationNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
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Improved instrument for the determination of the neutron electric charge

2015

Abstract We present an improved instrument for the determination of the neutron electric charge with ultracold neutrons. Several technical upgrades with respect to a former experiment will be discussed in detail. As a first test, we applied the apparatus to investigate the influence of gravitational attraction by means of a massive block of lead. The calculated sensitivity for a charge measurement is δ q n ≈ 2.14 × 10 − 20 e / day . Planned modifications increasing the sensitivity up to δ q n ≈ 1.34 × 10 − 21 e / day are demonstrated.

PhysicsNuclear physicsGravitationNuclear and High Energy PhysicsUltracold neutronsNeutronCharge (physics)Atomic physicsBlock (periodic table)InstrumentationSensitivity (electronics)Electric chargeNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
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