Evaluation of the Doppler-Broadening of Gamma-Ray Spectra from Neutron Inelastic Scattering on Light Nuclei

2009 ◽  
Author(s):  
Phillip C. Womble ◽  
Alexander Barzilov ◽  
Ivan Novikov ◽  
Joseph Howard ◽  
Jason Musser ◽  
...  
Geophysics ◽  
1960 ◽  
Vol 25 (4) ◽  
pp. 883-890 ◽  
Author(s):  
Edwin S. Mardock

The quantitative application of radioactivity logs for the estimation of formation petrophysical properties is dependent on certain fundamental factors which are discussed. It is difficult to avoid “hybrid” combinations of processes; for example neutron‐neutron and neutron‐gamma effects together, however, it is believed that the future of quantitative application of neutron logs depends to a large extent on the development of single component logging processes. Positive location of the sonde within the borehole for all types of logs needs further development. These improvements plus future developments in gamma‐ray spectral logs, neutron‐gamma spectral logs, neutron activation logs, and neutron inelastic scattering logs promise a bright future for radioactivity logging.


2018 ◽  
Vol 177 ◽  
pp. 02002
Author(s):  
N.A. Fedorov ◽  
D.N. Grozdanov ◽  
V.M. Bystritskiy ◽  
Yu.N. Kopach ◽  
I.N. Ruskov ◽  
...  

The characteristic gamma radiation from the interaction of 14.1 MeV neutrons with a natural silicon sample is investigated with Tagged Neutron Method (TNM). The anisotropy of gamma-ray emission of 1.779 MeV was measured at 11 azimuth angles with a step of ∠15°. The present results are in good agreement with some recent experimental data.


1971 ◽  
Vol 49 (11) ◽  
pp. 1461-1468 ◽  
Author(s):  
L. Nichol ◽  
T. J. Kennett

A detailed investigation has been conducted of the usefulness of fission-spectrum neutrons for inelastic neutron scattering studies. A Ge(Li)–NaI(Tl) annular pair spectrometer was employed in conjunction with a versatile in-core irradiation facility to conduct this evaluation. The Doppler broadening and shift which were observed are quantitatively described through the use of a simple model developed for the system. The effectiveness of neutron filters for the reduction of capture reactions which normally produce unwanted background is also discussed. Results indicate that gamma-ray deexcitation, following neutron inelastic scattering, can be readily identified and quantitatively evaluated. During the course of this study resonant neutron capture in the 35 keV resonance of 28Al was observed thus indicating the feasibility of investigation of this type of reaction. Lifetime results for levels in 19F were obtained using a Doppler attenuation method and a possible discrepancy in (dE/dx) values was indicated.


1997 ◽  
Vol 66 (7) ◽  
pp. 1884-1887 ◽  
Author(s):  
Noriaki Sato ◽  
Naofumi Aso ◽  
Gerry H. Lander ◽  
Bertrand Roessli ◽  
Takemi Komatsubara ◽  
...  

1999 ◽  
Vol 59 (10) ◽  
pp. 6762-6773 ◽  
Author(s):  
N. Stritt ◽  
J. Jolie ◽  
M. Jentschel ◽  
H. G. Börner ◽  
C. Doll

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