scholarly journals Neutron Radiation Characteristics of Plutonium Dioxide Fuel

1972 ◽  
Vol 15 (3) ◽  
pp. 396-410 ◽  
Author(s):  
Mojtaba Taherzadeh ◽  
Peter J. Gingo
Keyword(s):  
Neutron Radiation ◽  
Plutonium Dioxide ◽  
Radiation Characteristics

Neutron radiation characteristics of the IVth generation reactor spent fuel

2018 ◽  
Author(s):  
Sergey Bedenko ◽  
Igor Shamanin ◽  
Victor Grachev ◽  
Vladimir Knyshev ◽  
Olesya Ukrainets ◽  
...  
Keyword(s):  
Neutron Radiation ◽  
Spent Fuel ◽  
Radiation Characteristics

Standards in measuring neutron radiation characteristics

1973 ◽  
Vol 16 (5) ◽  
pp. 742-745
Author(s):  
V. T. Shchebolev ◽  
I. A. Kharitonov
Keyword(s):  
Neutron Radiation ◽  
Radiation Characteristics

scholarly journals Peculiarities of the radiation formation in dispersed microencapsulated nuclear fuel

2019 ◽  
Vol 5 (1) ◽  
pp. 23-29
Author(s):  
Sergey V. Bedenko ◽  
Vladimir V. Knyshev ◽  
Mariya Ye. Kuznetsova ◽  
Igor O. Lutsik ◽  
Igor V. Shamanin
Keyword(s):  
Nuclear Fuel ◽  
Computational Study ◽  
Reactor Core ◽  
Spectral Composition ◽  
Neutron Radiation ◽  
Photon Radiation ◽  
Structural Elements ◽  
Spent Fuel ◽  
Radiation Characteristics ◽  
Average Mass

A computational study has been performed for various options of the thorium reactor core loading. Neutronic studies of fuel have been conducted, its isotopic composition has been calculated, and the alpha emitters and the sources of neutron and photon radiation in the microencapsulated nuclear fuel have been analyzed. The studies had the purpose of developing the methodology used to estimate the radiation characteristics of nuclear fuel with a complex inner structure. Emphasis is placed on calculating the quantitative and spectral composition of the neutrons formed as the result of (a, n) reactions on small- and average-mass nuclei. The ratio of the quantity of the neutrons resulting from the (a, n) reactions to the quantity of the neutrons formed as the result of spontaneous fission has been calculated for fuel with heterogeneous and homogeneous arrangements of fissionable and structural elements. The developed tools will make it possible to estimate the neutron radiation dose, to revise the traditional fresh and spent fuel handling procedures, and to estimate, using the Rossi alpha method, the neutron multiplication factor in deeply subcritical systems. The neutron yield and spectrum were calculated using an analytical model and verified codes such as WIMS-D5B, ORIGEN-APP, SOURCES-4C and SRIM-2013.

A new type of defect structure in 124-superconducting oxide revealed by HREM

1991 ◽  
Vol 49 ◽  
pp. 1092-1093
Author(s):  
R. Sharma ◽  
B.L. Ramakrishna ◽  
N.N. Thadhani ◽  
D. Hianes ◽  
Z. Iqbal
Keyword(s):  
Shock Wave ◽  
Defect Structure ◽  
Neutron Radiation ◽  
Weak Links ◽  
Defect Structures ◽  
New Materials ◽  
New Type ◽  
Current Densities ◽  
Processing Techniques ◽  
Microstructural Studies

After materials with superconducting temperatures higher than liquid nitrogen have been prepared, more emphasis has been on increasing the current densities (Jc) of high Tc superconductors than finding new materials with higher transition temperatures. Different processing techniques i.e thin films, shock wave processing, neutron radiation etc. have been applied in order to increase Jc. Microstructural studies of compounds thus prepared have shown either a decrease in gram boundaries that act as weak-links or increase in defect structure that act as flux-pinning centers. We have studied shock wave synthesized Tl-Ba-Cu-O and shock wave processed Y-123 superconductors with somewhat different properties compared to those prepared by solid-state reaction. Here we report the defect structures observed in the shock-processed Y-124 superconductors.

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