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Efficiency calibration of neutron detector array for β decay of exotic nuclei
neutron detector array efficiency calibration 17N 16C
2009/8/14
The research of the in-beam efficiency calibration of Neutron Detector Array of Peking University using 17N and 16C beams was introduced in this paper. The efficiency of neutron wall and ball are comp...
Langevin study of neutron emission in the reactions 16O+181Ta and 19F+178Hf
pre-scission neutron multiplicity entrance channel mass asymmetry compound nucleus spin distribution Langevin equation
2009/8/14
The pre-scission neutrons measured in the reactions 16O+181Ta and 19F+178Hf are studied via a Langevin equation coupled with a statistical decay model. We find that because of the mass asymmetry of di...
Development of a facility for research of charged particle emission induced by fast neutron reactions
intermediate energy neutron (n x) reaction ΔE-ΔE-E telescopes
2009/8/14
A facility has been constructed for research of charged particle emissioninduced by fast neutron reactions ((n, x) reaction) based on the whiteneutron source and the quasi-monoenergetic neutron source...
Monte Carlo studies of micromegas as a neutron detector and its track reconstruction
simulation neutron detector track reconstruction
2009/8/14
In this paper a two dimensional readout micromegas detector with a polyethylene foil as converter was simulated on GEANT4 toolkit and GARFIELD for fast neutron detection. A new track reconstruction me...
Studies of the aperture design and its pointing precision in fast neutron penumbral imaging
inertial confined fusion neutron penumbral imaging classical molecular dynamics method
2009/8/14
Neutron penumbral imaging technique is an important diagnosis method in Inertial Confined Fusion, and the design of the aperture shape will affect the resolution of the imaging system. In this paper, ...
Simulation of a modified neutron detector applied in CSNS
rem counter high energy neutrons response function FLUKA
2009/8/14
We simulate the response of a modified Anderson-Braun rem counter in the energy range from thermal energy to about 10 GeV using the FLUKA code. Also, we simulate the lethargy spectrum of CSNS outside ...
Study on spatial resolution of micromegas as a neutron detector under condition of high neutron flux and γ ray background
micromegas neutron detection GEANT4 spatial resolution γ sensitivity
2009/8/14
In this paper Micromegas has been designed to detect neutrons. The simulation of the spatial resolution of Micromegas as neutron detector is carried out by GEANT4 toolkit. The neutron track reconstruc...
Superfluidity in neutron matter and symmetric nuclear matter and the effect of a microscopic three-body force
neutron matter symmetric nuclear matter superfluidity three-body force BCS theory BHF approach
2009/8/14
The neutron 3PF2 pairing gap in pure neutron matter, neutron 3PF2 gap and neutron-proton 3SD1 gap in symmetric nuclear matter have been studied by using the Brueckner-Hartree-Fock(BHF) approach and th...
Three-body model for neutron-halo nuclei
neutron-halo nuclei three-body model Faddeev equation
2009/8/13
The neutron-halo nuclei, 11Li, 14Be, and 17B, are studied in the three-body model. The Yukawa interaction is used to describe the interaction of the two-body subsystem. For given parameters of the two...
The β-delayed neutron and γ spectra of neutron-rich nucleus 21N using β-γ and β-n coincidence measurements were presented in this paper. Thirteen new neutron groups ranging from 0.28 MeV to 4.98 MeV a...
Neutron Probe Yields Break in Superconductor Mystery
Neutron Superconductor electric properties
2007/2/5
February 1, 2007，Call it a break in the case of “hidden order and the unconventional superconductor.” Writing in the journal Nature Physics,* U.S. and Canadian researchers report a major step toward s...
Low-lying levels of 103Pd have been investigated through the (d,t) reaction on 104Pd, at an incident deuteron energy of 15.0 MeV. Outgoing particles were momentum analyzed by an Enge magnetic spectrog...
The Importance of Strange Mesons in Neutron Star Properties
Strange Mesons Neutron Star Properties
2010/10/15
In order to obtain the properties of compact stellar objects, appropriate equations of state have to be used. In the literature, strange meson fields, namely the scalar meson field s¤(975) and the vec...
A Direct Measurement of the Neutron-Neutron Scattering Length
the Neutron-Neutron Scattering Length free neutrons
2010/10/15
A direct measurement of nn-scattering by colliding free neutrons has never been performed. Indirect measurements continue to provide inconsistent results, leaving the issue of charge symmetry in the n...
Partial Escape Width for Nuclei with Neutron Excess
Partial Escape Width Nuclei Neutron Excess
2010/10/15
In this work, the escape width for nuclei with neutron excess is calculated by continuum Random Phase Approximation (RPA) with a careful treatment on the differences between the densities of neutrons ...