Measurement of the effective number of secondary neutrons from Pu239 in the incident neutron energy region from 7 to 30 ev

Atomic Energy ◽  
1957 ◽  
Vol 2 (3) ◽  
pp. 299-304 ◽  
Author(s):  
I. V. Kurpichuikov ◽  
V. V. Okorokov ◽  
S. I. Sukhoruchkin
Keyword(s):  
Neutron Energy ◽  
Energy Region ◽  
Incident Neutron ◽  
Incident Neutron Energy ◽  
Effective Number ◽  
Secondary Neutrons

scholarly journals First Results on 238U(n,f) Prompt Fission Neutron Spectra from 1 to 200 MeV incident neutron energy

2018 ◽  
Vol 193 ◽  
pp. 03002 ◽  
Author(s):  
Paola Marini ◽  
Benoit Laurent ◽  
Gilbert Belier ◽  
Thomas Bonnet ◽  
Audrey Chatillon ◽  
...  
Keyword(s):  
Neutron Energy ◽  
Energy Region ◽  
Fission Neutron ◽  
High Energy ◽  
Incident Neutron ◽  
Good Precision ◽  
Incident Neutron Energy ◽  
Neutron Spectra ◽  
Prompt Fission ◽  
Prompt Fission Neutron

A new 238U(n,f) prompt fission neutron spectra (PFNS) measurement has been recently performed at the WNR facility of the Los Alamos National Laboratory. The measurement allows one to explore the dependence of the prompt fission neutron energy spectra on the incident neutron energy. The experimental setup couples the Chi-Nu scintillator array to a newly developed fission chamber, characterized by an improved alphafission discrimination and time resolution, a reduced amount of matter in the neutron beam and a higher actinide mass. The dedicated setup and the high statistics collected allow us to obtain a good precision on the measured fission neutron energy, as well as to explore the low energy region, down to 650keV, and the high energy region, above 5 MeV, of the emitted neutron spectrum. These are indeed the regions where discrepancies in the evaluated PFNS data are found. We present here the first preliminary results of the experiment.

Measurement and covariance analysis of 100Mo (n, 2n) 99Mo and 96Mo (n, p) 96Nb reaction cross sections at the incident neutron energy of 14.54 MeV

2020 ◽  
Vol 325 (3) ◽  
pp. 831-840
Author(s):  
Sangeetha Prasanna Ram ◽  
Jayalekshmi Nair ◽  
Saraswatula Venkata Suryanarayana ◽  
Laxman Singh Danu ◽  
Saroj Bishnoi ◽  
...  
Keyword(s):  
Neutron Energy ◽  
Cross Sections ◽  
Reaction Cross ◽  
Covariance Analysis ◽  
Incident Neutron ◽  
Incident Neutron Energy ◽  
Reaction Cross Sections

V51(n, γ)reaction in the keV incident neutron energy range

1978 ◽  
Vol 18 (5) ◽  
pp. 2092-2109 ◽  
Author(s):  
R. R. Winters ◽  
R. L. Macklin ◽  
J. Halperin
Keyword(s):  
Energy Range ◽  
Neutron Energy ◽  
Incident Neutron ◽  
Incident Neutron Energy ◽  
Neutron Energy Range

EFFICIENCY OF THE LONG BORON COUNTER FOR FAST NEUTRONS

1952 ◽  
Vol 30 (5) ◽  
pp. 402-411 ◽  
Author(s):  
S. A. Kushneriuk
Keyword(s):  
Neutron Energy ◽  
Fast Neutrons ◽  
Incident Neutron ◽  
Group Model ◽  
Neutron Diffusion ◽  
Incident Neutron Energy ◽  
Slowing Down

The efficiency of the long boron counter is calculated as a function of the incident neutron energy using the two-group model of neutron diffusion in conjunction with the age and exponential approximations for the slowing down of neutrons. The neutron energies considered are [Formula: see text]. Results are summarized graphically for several counter geometries.

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