Sodium iodide and plastic scintillator doorway monitor response to shielded reactor grade plutonium
We present the results of measurements to determine the response of typical doorway monitors to heavily shielded reactor-grade plutonium. These measurements were made to aid Brookhaven in their study of the feasibility of spiking nuclear fuels for safeguards purposes. The largely unevaluated raw data presented consist of the following: (1) point source gamma-ray efficiency measurements for the two types of Los Alamos portal monitors; (2) point neutron source count rates in the same monitors; (3) broad-beam attenuation measurements with lead shielding on several Pu and PuO/sub 2/ samples; (4) count rates in the Los Alamos portal monitor from lightly Pb-shielded PuO/sub 2/ sources; (5) gamma-ray spectral data from the Pu and PuO/sub 2/ sources taken with a 12.7-cm-diam by 2.5-cm-thick NaI detector and also a Ge(Li) detector; (6) gamma-ray dose rate versus distance from unshielded PuO/sub 2/ sources; and (7) relative neutron detector count rate as a function of polyethylene shielding thickness around an isotopic PuLiF neutron source.
- Research Organization:
- Los Alamos Scientific Lab., NM (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 5734600
- Report Number(s):
- LA-6566-MS
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
NUCLEAR MATERIALS DIVERSION
DETECTION
PLUTONIUM
DOORS
DOSE RATES
GAMMA DETECTION
GAMMA SOURCES
GAMMA SPECTRA
NEUTRON DETECTION
NEUTRON SOURCES
PLUTONIUM DIOXIDE
SHIELDING
ACTINIDE COMPOUNDS
ACTINIDES
CHALCOGENIDES
ELEMENTS
METALS
OPENINGS
OXIDES
OXYGEN COMPOUNDS
PARTICLE SOURCES
PLUTONIUM COMPOUNDS
PLUTONIUM OXIDES
RADIATION DETECTION
RADIATION SOURCES
SPECTRA
TRANSURANIUM COMPOUNDS
TRANSURANIUM ELEMENTS
055001* - Nuclear Fuels- Safeguards
Inspection
& Accountability- Technical Aspects