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U.S. Department of Energy
Office of Scientific and Technical Information

Activation-foil irradiation with californium fission sources. Special pub

Technical Report ·
OSTI ID:6841710
This document describes the NBS calibration service 44080C (formerly 8.10), which operates in the following way: (i) dosimetry sensors (metal foils, nuclear track detectors, wires, crystals, etc., supplied by the customer or by NBS) are irradiated to a certified neutron fluence in a /sup 252/Cf spontaneous fission neutron field (for short lived reaction products, the samples are irradiated to near saturation and the fluence rate specified), and (ii) the irradiated dosimetry sensors are shipped to the customer, followed by a test report stating the fluences or fluence rates and associated uncertainties. The scope and philosophy of the service, the neutron-field characteristics, irradiation procedures, and the uncertainties in the reported neutron fluences or fluence rates are discussed. Typical maximum fluences are of the order of 1 x 10/sup 13/ neutrons/sq cm and maximum fluence rates of 10 million neutrons/cm/sub 2/ sec, with combined (1 sigma) uncertainties of + or - 1.2%.
Research Organization:
National Bureau of Standards, Washington, DC (USA). Center for Radiation Research
OSTI ID:
6841710
Report Number(s):
PB-88-217443/XAB; NBS/SP-250/13
Country of Publication:
United States
Language:
English