Recent efforts to determine the cause of anomalous
experimental nuclear decay fluctuations suggests a possible
solar influence. Here we report on the results from several
nuclear decay experiments performed at Thule Air Base
in Greenland during the solar eclipse on 1 August 2008.
Thule was ideal for this experiment due to its proximity
to the magnetic north pole which amplified changes in the
charged particle flux and provided relatively stabilized conditions
for nearly all environmental factors. An exhaustive
list of relevant factors were monitored during the eclipse
to help rule out possible systematic effects in the event of unexpected results. We included measurements of temperature,
pressure, and humidity as well as power supply outputs,
neutron count rates, and the Earth’s local electric and
magnetic fields. Nuclear decay measurements of 14C, 90Sr,
99Tc, 210Bi, 234Pa, and 241Am were made using Geiger-
Müller (GM) ionization chambers. Although our data exhibit
no evidence for a statistically significant change in
the decay rate of any nuclide measured during the 1 August
2008 solar eclipse, small anomalies remain to be understood.