  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.
