2005
DOI: 10.6028/jres.110.027
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Commissioning of the NPDGamma detector array: Counting statistics in current mode operation and parity violation in the capture of cold neutrons on B4C and Al-27

Abstract: The NPDGamma γ-ray detector has been built to measure, with high accuracy, the size of the small parity-violating asymmetry in the angular distribution of gamma rays from the capture of polarized cold neutrons by protons. The high cold neutron flux at the Los Alamos Neutron Scattering Center (LANSCE) spallation neutron source and control of systematic errors require the use of current mode detection with vacuum photodiodes and low-noise solid-state preamplifiers. We show that the detector array operates at cou… Show more

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Cited by 5 publications
(1 citation statement)
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“…The reinforced B4C composite has a lower specific gravity of 2.51 g/cm 3 [136] (less than that of Al, 2.7 g/cm 3 ), compared to 3.20 g/cm 3 for SiC, and 3.96 g/cm 3 for A1 2 O 3 [2], as well as a high impact and wear resistance [137,138], a high melting point [139], a good resistance to chemical agents, and a high capacity for neutron absorption [139][140][141], making itself a promising candidate for the reinforcement in an Al matrix composite [142].…”
Section: B4c Reinforcementmentioning
confidence: 99%
“…The reinforced B4C composite has a lower specific gravity of 2.51 g/cm 3 [136] (less than that of Al, 2.7 g/cm 3 ), compared to 3.20 g/cm 3 for SiC, and 3.96 g/cm 3 for A1 2 O 3 [2], as well as a high impact and wear resistance [137,138], a high melting point [139], a good resistance to chemical agents, and a high capacity for neutron absorption [139][140][141], making itself a promising candidate for the reinforcement in an Al matrix composite [142].…”
Section: B4c Reinforcementmentioning
confidence: 99%