In ion implantation for Gaussian distribution profile, with standard deviation σp, if the total dose is ϕ, then the peak concentration can be expressed as

• A. ϕσp
• B. \(\frac{{0.4\phi }}{{{\sigma _p}}}\)
• C. \(\frac{{{\sigma _p}}}{\phi }\)
• D. \(\frac{{\phi {\sigma _p}}}{{0.4}}\)