Decay Study of 35Mg for Level Scheme Development

An experiment was conducted at TRIUMF laboratory using the GRIFFIN spectrometer to study the decay of 35Mg. Isotopes in its decay chain include 35,34,33Al, 35,34,33Si, and 35,34,33P, which are populated via beta decay, beta-delayed neutron emission, and beta-delayed two-neutron emission. Analysis was done on the full data set, including tagging with a new OGS detector to cleanly separate out the beta-delayed neutron emission daughters. By setting up a gamma-gamma coincidence spectrum, with the coincidence gating being within 300 ns, new energy level transitions for certain isotopes down the decay chain can be discovered. Through this method, new energy level transitions for both 35Al and 35P were discovered. Specifically, we believe we've found 7 new transitions for 35Al and 5 new energy levels. The same is true for 35P, with 7 new transitions and 2 new energy levels. We're also working on determining the branching ratios and half-lives of 35Mg and 35Al by obtaining a fit of the data through the use of the Bateman Equations. The goal of the fit is to extract the beam intensity which would then give an absolute decay rate to help determine the decay feeding intensity. The current state of the analysis will be presented.