FIGURES 1.1 Coordinate system for scattering calculation -~-----------------2.1 Efficiency of neutron detectors versus neutron energy ~-~------~--~2.2 Transmission of KBr crystal versus gamma-ray dose -~------------2.3 Block diagram of data encoder -------------- <tr ttt tree 2.4 Schematic diagram of logarithmic-resistor-----<--7-- 7-7 c rte r ne 2.5 Calibration curve for typical logarithmic-resistor ---~------------2.6 Schematic diagram of frequency converter (HFC)-----------------2.7 Output frequency versus input voltage for typical HFC -------------2.8 Block diagram of magnetic-tape recorder ---~----7 53 rt ttt r errs 2.8 Overall frequency response of magnetic-tape recorder - ------------2.10 Frequency response of record head --~-----~---c 77 r-esc-t rene 2.11 Detector 1 channel calibration setup ------~-- 777 crc ort r errr 2.12 Detector 1 channel calibration curve ------- 3-7 t ott ttt rrr 2.13 Detector 2, Lil, channel calibration curve -<------------------2.14 Detector 3, Lil, channel calibration curve -------- +777 error n=2.15 Detector 4, KBr, channel calibration curve ----<--"--<---------- 13 18 18 19 20 20 20 22 24 28 28 29 29 31 31 32