  The dissertation presents the measurement of electrons from heavy flavor
decays in proton + proton collisions at RHIC at collision energy $\sqrt(s) =
200$ GeV. Two independent analysis techniques of signal extraction were
performed. This is the first measurement of the Open Charm crossection at this
collision energy and it is an important baseline measurement for comparison
with nucleus + nucleus collisions. The modification of Open Charm production in
heavy ion collisions compared to the presented p+p result can be used to study
the final state interaction of the heavy quarks with hot dense matter inside
the collisions. The results of the Open Charm measurements are compared to
current pQCD predictions both in Leading Order (LO) $O(\alpha_s^2)$ and
Next-to-Leading Order (NLO) $O(\alpha_s^3)$. The final result for the total
Open Charm crossection is $\sigma_{c\bar{c}}= (0.920 \pm 0.148(stat)\pm
0.524(sys))$ mb.
