scholarly journals Simulations of Neutron Time-of-Flight Method by Inelastic Scattering Carbon-12 using MCNP6 and Geant4

2019 ◽  
Author(s):  
Zachary Sweger
Keyword(s):  
Inelastic Scattering ◽  
Time Of Flight ◽  
Neutron Time ◽  
Time Of Flight Method

Application of Spectroscopic Radiography Using Pulsed Neutron Time-of-Flight Method for Material Characterization

2006 ◽  
Vol 321-323 ◽  
pp. 1663-1666 ◽  
Author(s):  
Yoshiaki Kiyanagi ◽  
Takashi Kamiyama ◽  
Toshiyuki Nagata ◽  
F. Hiraga
Keyword(s):  
Material Characterization ◽  
Time Of Flight ◽  
Neutron Imaging ◽  
Whole Body ◽  
Structure Information ◽  
Transmission Image ◽  
Neutron Time ◽  
The Difference ◽  
Pulsed Neutron ◽  
Time Of Flight Method

Neutron imaging using a pulsed neutron time-of-flight method can give an energy dependent transmission image, namely, spectroscopic image. This image includes the structure information if the sample is coherent scatterer. Here, two examples are introduced. First, we obtained the transmission image of a welded sample of SS304 and 308. Change of the crystal structure depending on the position was observed. Furthermore, we measured spatial dependent transmission of SS samples treated in different ways, surface treatment and whole body treatment. There were almost no spatial dependent change, but the cross section change was found between surface and whole body treatment samples. It was suggested that this might be due to the difference of a grain size. These results demonstrated that the spectroscopic imaging using a pulsed neutron source is a useful tool for material characterization.

Inelastic Scattering of Neutrons by the Time-of-Flight Method

1961 ◽  
Vol 16 (2) ◽  
pp. 166-175 ◽  
Author(s):  
Kineo Tsukada ◽  
Shigeya Tanaka ◽  
Michio Maruyama
Keyword(s):  
Inelastic Scattering ◽  
Time Of Flight ◽  
Time Of Flight Method

scholarly journals Fast neutron inelastic scattering from 7Li

2020 ◽  
Vol 239 ◽  
pp. 01029
Author(s):  
Roland Beyer ◽  
Axel Frotscher ◽  
Arnd R. Junghans ◽  
Markus Nyman ◽  
Arjan Plompen ◽  
...  
Keyword(s):  
Inelastic Scattering ◽  
Dead Time ◽  
Detection Efficiency ◽  
Production Cross ◽  
Time Of Flight ◽  
Target Position ◽  
Fast Neutrons ◽  
Neutron Inelastic Scattering ◽  
High Purity Germanium ◽  
Neutron Time

The inelastic scattering of fast neutrons from 7Li nuclei was investigated at the nELBE neutron-time-of-flight facility. The photon production cross section of 478 keV γ-rays from the first excited state of 7Li was determined by irradiating a disc of LiF with neutrons of energies ranging from 100 keV to about 10 MeV. The target position was surounded by a setup of 7 LaBr3 scintillation detectors and 7 high-purity germanium detectors to detect the de-excitation γ-rays. A 235U fission chamber was used to determine the incoming neutron flux. The number of detected photons was corrected for the detection efficiency, multiple scattering and the time-of-flight dependent data acquisition dead time. The preliminary results show reasonable agreement with some previous measurments but are about 15 % below the recent data taken at the GELINA facility.

Residual Stress Analysis by Neutron Time-of-Flight at a Reactor Source

1989 ◽  
Vol 166 ◽  
Author(s):  
H.G. Priesmeyer ◽  
J. Schröder
Keyword(s):  
Stress Analysis ◽  
Time Of Flight ◽  
Science Research ◽  
Material Science Research ◽  
Experimental Tool ◽  
First Results ◽  
Neutron Time ◽  
Efficient Type ◽  
Non Destructive ◽  
Time Of Flight Method

ABSTRACTNon-destructive neutron diffractometry for stress analysis will be a powerful experimental tool in material science research performed at the GKSS 5 MW reactor FRG-1. Arguments which show the advantages of the time-of-flight method are given and a suitable high-resolution neutron-efficient type of spectrometer is introduced. First results derived from this method are presented.

Thermal Diffuse Scattering in Neutron Time-of-Flight Powder Patterns

1989 ◽  
Vol 166 ◽  
Author(s):  
Michael J. Radler
Keyword(s):  
Transition Metal ◽  
Inelastic Scattering ◽  
Diffuse Scattering ◽  
Elevated Temperatures ◽  
Time Of Flight ◽  
Significant Fraction ◽  
Thermal Diffuse Scattering ◽  
Neutron Time ◽  
Thermal Diffuse ◽  
Profile Refinement

ABSTRACTInelastic scattering from lattice phonons contributes a significant fraction of the observed Bragg intensity in time of flight neutron powder patterns of transition metal monoxides at elevated temperatures. Ignoring this thermal diffuse scattering (TDS) leads to errors in the site occupations of defects present in these materials. The intensity from one phonon TDS has been calculated as a function of time-of-flight and used to correct the measured intensities. The effect of this correction on the results of Rietveld profile refinement is discussed.

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