Radioactive neutron source spectra from 9Be(α, n) cross section data

Geiger, Klaus; Zwan, L. van der

doi:10.1016/0029-554x(75)90336-5

Cited by 103 publications

(51 citation statements)

References 24 publications

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“…An AmBe neutron source produces neutrons in four discrete groups: n 0 , n 1 , n 2 , and n 3 , which populate the ground state, the 4.443 MeV level, the 7.65 MeV level, and the 9.64 MeV level of the 12 C product nucleus, respectively [24,25]. The n 1 group neutrons, accompanied by 4.443 MeV gamma rays, dominate the production of neutrons in an AmBe source [24,25].…”

Section: Experimental Designmentioning

confidence: 99%

Ionization efficiency study for low energy nuclear recoils in germanium

Barker

Wei

Mei

et al. 2013

Astroparticle Physics

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We used the internal conversion (E 0 transition) of germanium-72 to indirectly measure the low energy nuclear recoils of germanium. Together with a reliable Monte Carlo package, in which we implement the internal conversion process, the data was compared to the Lindhard (k=0.159) and Barker-Mei models. A shape analysis indicates that both models agree well with data in the region of interest within 4%. The most probable value (MPV) of the nuclear recoils obtained from the shape analysis is 17.5 ± 0.12 (sys) ± 0.035 (stat) keV with an average path-length of 0.014 µm.

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Section: Experimental Designmentioning

confidence: 99%

Ionization efficiency study for low energy nuclear recoils in germanium

Barker

Wei

Mei

et al. 2013

Astroparticle Physics

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“…In this study a measured 241 Am-Be neutron spectrum was used for the neutron energy region above 1.5 MeV. For the neutron energy below 1.5 MeV an arbitrary effective spectrum was used that has a peak at 0.4 MeV and consists of 23% of the total of 241 Am-Be neutron spectrum [16]. The 4.4-MeV gamma rays from 12 C* were considered; however, the low-energy 241 Am photons were assumed to be filtered out.…”

Section: Monte Carlo Simulationsmentioning

confidence: 99%

Prompt-gamma neutron activation analysis facility for in vivo body composition studies in small animals

Stamatelatos

Kasviki

Green

et al. 2004

Analytical and Bioanalytical Chemistry

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The design, calibration, dosimetry and performance evaluation of a prompt-gamma neutron activation analysis facility for in vivo body composition studies in small animals (i.e. rats or rabbits) is discussed. The system design was guided by Monte Carlo transport calculations using MCNP-4C code. A system was built and performance evaluation was made using a 185-GBq Pu-Be neutron source. Prompt-gamma rays produced by neutron capture reactions were detected by a combination of a NaI(Tl) scintillation and a HPGe semiconductor detectors. Nitrogen and chlorine were quantified by analysis of the 10.83-MeV and 6.11-MeV peaks, respectively. Appropriate corrections for the animal body size were determined. The facility described allows the in vivo determination of protein and extracellular space in sets of experimental animals.

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“…Measurements of neutron-gamma discrimination were carried out using an AmBe neutron source [15]. It was placed vertically 6.5 cm directly above the outer wall of the tube and horizontally 22.5 cm away from PMT0.…”

Section: Neutron-gamma Discriminationmentioning

confidence: 99%

Measuring fast neutrons with large liquid scintillation detector for ultra-low background experiments

Zhang¹,

Mei²,

Davis³

et al. 2013

Nuclear Instruments and Methods in Physics Research Section A:

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We developed a 12-liter volume neutron detector filled with the liquid scintillator EJ301 that measures neutrons in an underground laboratory where dark matter and neutrino experiments are located. The detector target is a cylindrical volume coated on the inside with reflective paint (95% reflectivity) that significantly increases the detector's light collection. We demonstrate several calibration techniques using point sources and cosmic-ray muons for energies up to 20 MeV for this large liquid scintillation detector. Neutron-gamma separation using pulse shape discrimination with a few MeV neutrons to hundreds of MeV neutrons is shown for the first time using a large liquid scintillator.

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Radioactive neutron source spectra from 9Be(α, n) cross section data

Cited by 103 publications

References 24 publications

Ionization efficiency study for low energy nuclear recoils in germanium

Ionization efficiency study for low energy nuclear recoils in germanium

Prompt-gamma neutron activation analysis facility for in vivo body composition studies in small animals

Measuring fast neutrons with large liquid scintillation detector for ultra-low background experiments

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