  The hyperfine induced 2s 2p 3P0 -> 2s2 1S0 transition rate in Be-like sulfur
was measured by monitoring the decay of isotopically pure beams of 32-S12+ and
33-S12+ ions in a heavy-ion storage ring. Within the 4% experimental
uncertainty the experimental value of 0.096(4)/s agrees with the most recent
theoretical results of Cheng et al. [Phys. Rev. A 77, 052504 (2008)] and
Andersson et al. [Phys. Rev. A 79, 032501 (2009)]. Repeated experiments with
different magnetic fields in the storage-ring bending magnets demonstrate that
artificial quenching of the 2s 2p 3P0 state by these magnetic fields is
negligible.
