Number the detectors below in order of their intrinsic efficiency for collecting full-energy peaks from 1 mev photons (use # 1 to indicate most efficient, and # 4 to indicate least efficient). silicon sodium iodide germanium gas-filled proportional 6. a gm counter creates a charge of 3.9x109 c each time it cycles through a geiger discharge. the detector has a capacitance of 5.2x1010 f. estimate the amplitude change of the voltage pulses created on 10. which of the following statements is(are) true? a. the geiger-mueller tube has a photocathode that converts electrons to low-energy photons in order to start the multiplication process. b. 1b based neutron detectors are more efficient at measuring fast neutrons. c. quenching gas in gm counters and proportional counters serves the same purpose. d. majority charge carriers in p-type semiconductors are holes. complete absorption of a 4 mev alpha versus complete absorption of a 100 kev electron a. av 0v b. av 0.25 v c. av 4 v d. av 7.5 v