Abstract
We have calculated the magnetic dipolar spin-relaxation rates of magnetically trapped doubly-spin-polarized atomic deuterium gas. The results are expressed in a simple closed formula describing the dipolar-relaxation-limited stability in the Boltzmann (T≫TF), the degeneracy (T≪TF), and the crossover (T=TF) regimes. In the degeneracy regime we typically find lifetimes of some
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