Measurements with shielded gamma counters

Now we take measurements with two shielding arrangements. 1) The detector is fully shielded with lead bricks and 2) The bottom side of the detector is open and other sides are covered. The second shielding configuration is used to check the gamma counts from the floor.

Detector is fully covered with lead bricks

The bottom side of the detector is open but other sides are covered with lead bricks

Mohammad Javani who is a grad student at Physics department of GSU is taking measurments on roof.