Impact of $^7$Be breakup on $^7$Li(p,n) Neutron Spectrum

Midhun C. V; M. M Musthafa; S. V Suryanarayana; T. Santhosh; A. Baishya; P. Patil; A Pal; P. C Rout; S Santra; R. Kujur; Antony Joseph; Shaima A; Hajara. K; P. T. M Shan; Satheesh B; Y. Sawant; B. V. John; E. T Mirgule; K. C Jagadeesan; S. Ganesan

arXiv · 2108.01382

Impact of $^7$Be breakup on $^7$Li(p,n) Neutron Spectrum

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Abstract

The formation of continuum neutron distribution in $^7$Li(p,n) has been identified as due to the coupling of the $^7$Be breakup levels to the final state of the reaction. The continuum neutron spectra produced by $^7$Li(p,n) reaction has been estimated by measuring the double differential cross sections for continuum and resonant breakup of $^7$Be, through $^7$Li(p,n)$^7$Be$^*$ reaction at 21 MeV of proton energy. The breakup contributions from continuum and $5/2^-$, $7/2^-$ states of $^7$Be have been identified. The measured double differential cross sections have been reproduced through CDCC-CRC calculations. The cross sections were projected to neutron spectrum using Monte-Carlo approach and validated using experimentally measured $^3$He gated neutron spectra. $^7$Li(p,n) neutron spectrum at 20 MeV incident proton energy measured by McNaughton. et al. has been reproduced by adapting estimated model parameters for the reaction.

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Midhun C. V, M. M Musthafa, S. V Suryanarayana, T. Santhosh, A. Baishya, P. Patil, A Pal, P. C Rout, S Santra, R. Kujur, Antony Joseph, Shaima A, Hajara. K, P. T. M Shan, Satheesh B, Y. Sawant, B. V. John, E. T Mirgule, K. C Jagadeesan, S. Ganesan. 2021-08-03. Impact of $^7$Be breakup on $^7$Li(p,n) Neutron Spectrum. https://arxiv.org/abs/2108.01382

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