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Space Dependent Study of Fast Neutron Spectra and Tritium Production Rate in a Fusion Reactor Blanket of Li₂O

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Title Space Dependent Study of Fast Neutron Spectra and Tritium Production Rate in a Fusion Reactor Blanket of Li₂O
 
Creator Bhatia, Mamta
Gupta, Sanjay
 
Subject Lithium oxide
Blanket
Tritium Production Rate
Tritium Breeding Ratio
 
Description 833-840
Study of spatial spectra and tritium breeding ratio (TBR) in a lithium blanket play a crucial role for the successful
operation of a Fusion reactor. In this paper, we have reported the results for the space-dependent fast neutron spectra and
tritium production rate (TPR) in cylindrical assemblies of Li₂O. The multigroup diffusion equation has been solved using
eigenfunction expansion method. The obtained results for scalar spectra, total flux and TPR in Li₂O are compared with
corresponding values for natural Li. The space dependent scalar spectrum in Li₂O has been compared for different
configurations (slab, sphere and cylindrical). We find that the shapes of the curves are almost similar, though the neutron
flux is found to be highest in the case of cylindrical assembly. This suggests a larger value of total TBR for a cylindrical
geometry. Further, the study of space variation of total flux for Li₂O and natural Li shows that there is not much change in
the shapes and numerical values, however, it falls sharply near the boundary end surface of the assembly for Li₂O as
compared to natural Li. Similarly, the fall in the TPR curves becomes more rapid for the case of Li₂O as compared to natural
Li near the boundary end.. The calculated results of spatial distributions of TPR for 6Li (n,)t and ⁷Li (n,n'α)t reactions are
compared with experimentally obtained results for cylindrical slab assemblies. and it is found that agreement is fairly good,
both in the case of 7Li and 6Li .
 
Date 2022-10-07T12:04:04Z
2022-10-07T12:04:04Z
2022-10
 
Type Article
 
Identifier 0975-0959 (Online); 0301-1208 (Print)
http://nopr.niscpr.res.in/handle/123456789/60669
https://doi.org/10.56042/ijpap.v60i10.65064
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source IJPAP Vol.60(10) [Oct 2022]