scholarly journals First experimental prompt γ -ray spectra in fast-neutron-induced fission of U238

2018 ◽  
Vol 98 (5) ◽  
Author(s):  
J.-M. Laborie ◽  
R. Billnert ◽  
G. Bélier ◽  
A. Oberstedt ◽  
S. Oberstedt ◽  
...  
Keyword(s):  
Fast Neutron ◽  
Induced Fission ◽  
Γ Ray

scholarly journals First experimental prompt γ-ray spectra in fast neutron-induced fission of 238U

2017 ◽  
Vol 146 ◽  
pp. 04032 ◽  
Author(s):  
J.-M. Laborie ◽  
G. Bélier ◽  
J. Taieb ◽  
A. Oberstedt ◽  
S. Oberstedt
Keyword(s):  
Fast Neutron ◽  
Induced Fission ◽  
Γ Ray

scholarly journals Measurement of Prompt Fission γ-ray Spectra in Fast Neutron-induced Fission

2012 ◽  
Vol 31 ◽  
pp. 13-20 ◽  
Author(s):  
J.-M. Laborie ◽  
G. Belier ◽  
J. Taieb
Keyword(s):  
Fast Neutron ◽  
Induced Fission ◽  
Γ Ray ◽  
Prompt Fission

scholarly journals Lifetime measurement around 132Sn with the ν-Ball array

2020 ◽  
Vol 1643 (1) ◽  
pp. 012135
Author(s):  
G Häfner ◽  
R Lozeva ◽  
A Blazhev ◽  
R L Canavan ◽  
D Etasse ◽  
...  
Keyword(s):  
High Resolution ◽  
Fast Neutron ◽  
Scintillation Detectors ◽  
Tandem Accelerator ◽  
Lifetime Measurements ◽  
Fission Fragments ◽  
Hpge Detectors ◽  
Induced Fission ◽  
Γ Ray ◽  
Actinide Targets

Abstract Neutron-rich nuclei were studied after fast neutron-induced fission of 238U and 232Th at the ALTO facility in Orsay, France. The neutrons were produced with the LICORNE directional neutron source using a pulsed 7Li beam provided by the Tandem accelerator. The actinide targets were surrounded by the ν-Ball array to measure the de-excitation of fission fragments. The ν-Ball array is a hybrid spectrometer which consists of HPGe detectors (equipped with BGO shielding) and LaBr3(Ce) scintillation detectors allowing for high-resolution γ-ray spectroscopy and lifetime measurements in the ns/sub-ns range. This contribution presents preliminary results on 134Te and 137I populated in the 238U(n,f) reaction.

scholarly journals Statistical study of the prompt-fission γ -ray spectrum for U238(n, f ) in the fast-neutron region

2018 ◽  
Vol 98 (1) ◽  
Author(s):  
L. Qi ◽  
M. Lebois ◽  
J. N. Wilson ◽  
A. Chatillon ◽  
S. Courtin ◽  
...  
Keyword(s):  
Fast Neutron ◽  
Statistical Study ◽  
Γ Ray ◽  
Prompt Fission

scholarly journals Measurement of Fast Neutron Induced Fission Cross Section for Actinide Nuclides

1989 ◽  
Vol 26 (1) ◽  
pp. 11-14 ◽  
Author(s):  
Mamoru BABA ◽  
Naohiro HIRAKAWA ◽  
Tomohiko IWASAKI ◽  
Kazutaka KANDA
Keyword(s):  
Fast Neutron ◽  
Cross Section ◽  
Fission Cross Section ◽  
Induced Fission

Study of photofission fragment mass distribution of 232Th, 238U, 237Np and 240Pu isotopes in various γ-ray energies

2018 ◽  
Vol 27 (03) ◽  
pp. 1850018 ◽  
Author(s):  
M. R. Pahlavani ◽  
P. Mehdipour
Keyword(s):  
Experimental Data ◽  
Satisfactory Agreement ◽  
Mass Distribution ◽  
Fission Fragment ◽  
Scission Point ◽  
Fragment Mass ◽  
Pu Isotopes ◽  
Induced Fission ◽  
Γ Ray ◽  
Peak To Valley Ratio

Photofission of [Formula: see text]Th, [Formula: see text]U, [Formula: see text]Np and [Formula: see text]Pu isotopes are investigated. Modified version of Gorodisskiy approach that is developed to study the neutron-induced fission are employed to simulate fission fragment mass distribution for these isotopes in different energies. The effect of emitted neutron prior to scission point is studied. Peak to valley ratio is also extracted. Obtained results using this approach are compared with original Gorodisskiy model as well as available experimental data. Satisfactory agreement is achieved between theoretical and experimental data especially in medium and low [Formula: see text]-ray energies than original formalism of Gorodisskiy.

Fast Neutron Induced Fission Cross Section for Pu-239

1983 ◽  
pp. 36-38 ◽  
Author(s):  
Zhou Xianjian ◽  
Yan Wuguang ◽  
Zhou Huiming ◽  
Deng Xinlu ◽  
Rong Chaofan ◽  
...  
Keyword(s):  
Fast Neutron ◽  
Cross Section ◽  
Fission Cross Section ◽  
Induced Fission

scholarly journals Fast neutron and γ-ray backscatter radiography for the characterization of corrosion-born defects in oil pipelines

2020 ◽  
Vol 225 ◽  
pp. 06009
Author(s):  
Mauro Licata ◽  
Helen M. O. Parker ◽  
Michael D. Aspinall ◽  
Manuel Bandala ◽  
Frank Cave ◽  
...  
Keyword(s):  
Fast Neutron ◽  
Radiation Source ◽  
Imaging System ◽  
Detection System ◽  
National Physical Laboratory ◽  
Pulse Shape Discrimination ◽  
Physical Laboratory ◽  
Γ Rays ◽  
Γ Ray ◽  
Mixed Radiation Field

In this research, a combined fast-neutron/γ-raybackscatter imaging technique is described. The aim of this work is to understand corrosion defects in pipelines by measuring differences in the scattered radiation flux, generated when different steel thicknesses are irradiated by a neutron and γ-ray focused beam. A californium-252 radiation source is used to produce fast neutron and γ rays, exploiting its spontaneousfission. This mixed radiation field is collimated and directed towards the steel samples. Backscattered neutrons and γ rays aremeasured as a function of the steel thickness using 4 liquid organic scintillation detectors linked to a real-time, pulse-shape discrimination system, which separates and retains the neutron and γ-ray event data. In this paper, we describe how, using asingle radiation source and detection system, it is possible to perform and combine two complementary imaging modalities. This research is validated by an MCNP6 computer simulation study. The backscatter imaging system developed for this research and the experimental results of the measurements carried out using the National Physical Laboratory neutron low-scatter facility are also presented in this paper.

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