Proving Chapman's Function Displacement Upward by 1 Scale Height

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According to Chapman theory the photon volume deposition rate for an incoming beam of solar radiation is given by
q(h) = I_{t} \sigma n_{0} \exp\left(-\frac{h}{H} - \sigma n_{0} H \sec\chi \exp\frac{-h}{H}\right)
where It is the flux of incoming solar radiation, σ is the absorption cross-section, no is absorber density at the surface and H is its scale height. Prove that the deposition curve is displaced upwards by one scale height without changing shape if either σ or no are increased by a factor of e the natural log base. It is not sufficient to show that hmax increases by one scale height.

well i tired multiplying sigma or n by e and i get this
q(h) = I_{t} \sigma n_{0} \exp\left(1 -\frac{h}{H} - \sigma n_{0} H \sec\chi \exp(1 - \frac{-h}{H})\right)

the thing is i am not quite sure how one would show a displacement of H upward...
are we aiming to get q(h) + H ? Is that the kind of dispacement that this question requires?

as always, help is greatly appreciated!
 
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The value of H equals ## 10^{3}## in natural units, According to : https://en.wikipedia.org/wiki/Natural_units, ## t \sim 10^{-21} sec = 10^{21} Hz ##, and since ## \text{GeV} \sim 10^{24} \text{Hz } ##, ## GeV \sim 10^{24} \times 10^{-21} = 10^3 ## in natural units. So is this conversion correct? Also in the above formula, can I convert H to that natural units , since it’s a constant, while keeping k in Hz ?

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