The use of subindices with greek letters

Question

I need to use subindices with greek letters. But I find that the result is sometimes decipherable.

Examples:

$\alpha_{H}$, $\gamma_{H}$

Do you have any suggestion in that regard? Of course, I do not want to use another subindex than "H".

Answer 1

try it this way:

\def\H{\rule{0pt}{1.5ex}H}

$\alpha_H \gamma_H $ $\alpha_{\H} \gamma_{\H} $