The pattern was recorded by using a neutron detector to measure the neutron internsity at different positions. Notice the 100 scale of the figure. By making appropriate measurements directly on the figure, determine how far the detector was behind the slits. Given: The pattern was recorded by using a neutron detector to measure the neutron internsity at different positions. Notice the 100 scale of the figure. By making appropriate measurements directly on the figure, determine how far the detector was behind the slits.