ESTABLISHMENT OF A SIMPLE NEUTRON CALIBRATION FIELD USING A MODERATED 252Cf SOURCE: PART II. EXPERIMENTAL CHARACTERIZATION OF SIMPLE NEUTRON CALIBRATION FIELD.

This paper describes the development and experimental standardization of neutron fields simply arranged for detector calibrations used for radiation control and environmental measurement. These fields are the following: (1) bare **2**5**2Cf fission field, (2) iron-moderated **2**5**2Cf field, (3) carbon-moderated **2**5**2Cf field, and (4) polyethylene-moderated **2**5**2Cf field. These fields are most suitable for calibrating the detectors used in and around nuclear and radiation facilities, since the fields are designed to simulate the typical neutron fields in and around the facilities.