Cross-section measurements of $^7Be+d \rightarrow p+\alpha+\alpha$ and $^7Li+d \rightarrow n+\alpha+\alpha$ with ANASEN and their implication in the Standard Big Bang Nucleosynthesis(SBBN).

Astrophysically observed $^7Li$ is 3-4 times less than predicted by current models of SBBN. The nuclear reaction $^7Be+d$ at energies relevant to SBBN, has been discussed as a possible means to destroy mass-7 nuclei. We investigate the $^7Be+d$ reaction at SBBN energies using a radioactive $^7Be$ beam and deuterium gas target inside ANASEN (Array for Nuclear Astrophysics Studies with Exotic Nuclei). ANASEN is an active target detector system which tracks the charged particles using a position sensitive proportional counter and 24-SX3 and 4-QQQ position sensitive Silicon detectors, all backed up by CsI detectors. The experiment measures a continuous excitation function by slowing down the beam in the target gas down to zero energy. Our set-up provides a high detection efficiency for all relevant reaction channels. We also performed an experiment for the mirror nuclear reaction $^7Li+d$ with ANASEN in solid target mode as well as in gas target mode. The preliminary results of these experiments along with details of ANASEN will be presented.