[Orgmode] Superscripts in LaTeX export

[Thomas S. Dye]

Aloha all,

I'm trying to generate $^{14}$C, or an equivalent, from org-mode to  
represent the isotope of carbon important in archaeological dating.

Reading the manual, I tried this:

** A Brief History of Attempts to Interpret the ^{14}C Dates
*** The ^{14}C Dates

Which, in my #+LaTeX_CLASS: beamer export, yields

\subsection{A Brief History of Attempts to Interpret the \^{}{14}C  
Dates}
...
\begin{frame}\frametitle{The \^{}{14}C Dates}

The problem seems to be the space before the ^.

This input:

** A Brief History of Attempts to Interpret the x^{14}C Dates
*** The x^{14}C Dates

yields the correct LaTeX:

\subsection{A Brief History of Attempts to Interpret the x 
$^{\mathrm{14}}$C Dates}
...
\begin{frame}\frametitle{The x$^{\mathrm{14}}$C Dates}

Am I missing something?  Or, is the LaTeX export thrown off by the  
space before ^?

All the best,
Tom