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36
Journal of Science and Technology in the Tropics
Figure 2(a) has been plotted to observe the effect of different parameters on
the amplitudes of solitons. In this figure the amplitude of KdV soliton (dotted line)
, the amplitude of dressed soliton (solid line) and the amplitude of higher
order correction(dashed line) are drawn aganistκ . The other parameters are
λ = 0.3 , m
i
= 0.5 , m
e
= 0.5 , σ = 0.15 , α = 1and β = 1. It is seen that the amplitude of
KdV, the amplitude higher order correction and the amplitude of dressed soliton
decreses rapidly and then increses slowly with the increse ofκ througout the
region. But the amplitude of higher order correction never exceed the amplitude
of the KdV soliton. So the dressed soliton is physical for all values ofκ .
(1)
Figure 2. Top: 2(a) The amplitudes of the KdV soliton (dotted line) ψ ,
(2)
the higher order correction (dashed line) ψ and dressed soliton (solid line)
ψ are plotted against κ . The other parameters are λ = 0.3 , m
i
= 0.5 ,
m
e
= 0.5 , σ = 0.15 , α = 1 and β = 1. Bottom: 2(b) The amplitude of
KdV (dotted line), the amplitude of the higher order correction (dashed line)
and the amplitude of the dressed soliton (solid line) is plotted against λ . The
other parameters are, κ = 1.5 , m
i
= 0.5 , m
e
= 0.5 , σ = 0.15 , α = 1 and
β = 1.