Unattended mode monitoring of neutron coincidence data and high resolution gamma-ray spectra

Conference · Tue Jan 01 04:00:00 EST 1991 · Nuclear Materials Management. Annual Meeting Proceedings; (United States)

OSTI ID:5419138

Smith, B G.R.; Verrecchia, G P.D.; Ballette, G; Van Der Straat, F; Losito, A ^[1]

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1. Euratom Safeguards Directorate, Commission of the European Communities, Batiment CUBE, Plateau Du Kirchberg, L-2920 (LU)

In this paper two simple low cost flexible solutions are presented, one for the unattended acquisition of neutron coincidence data, the other for the unattended acquisition of gamma-ray spectra. The first solution consists of an inexpensive commercial data logging equipment attached to a neutron coincidence electronics for the unattended acquisition of passive neutron coincidence data. The data logger permits both the flexible configuration of a passive neutron coincidence measurement system for unattended mode monitoring and the storage of the measured totals and reals count rates. A customer software package permits the complete analysis of the stored data to provide an assay of each item passing through the measurement cavity. The analysis includes an input for different isotopic compositions, the calculation of the multiplication corrected reals rates, and the determination of {sup 240}PU{sub eff} masses. The software package for review includes displays of the totals and reals count rates logged by the data logger, the multiplication correct reals count rates and the measured {sup 240}PU{sub eff} masses, all as a function of time. The second solution consists of a simple low cost flexible software package controlling up to 4 multi-channel analyzer (MCA) cards for unattended spectrum acquisition.

• OSTI ID: 5419138
• Report Number(s): CONF-910774--
• Conference Information: Journal Name: Nuclear Materials Management. Annual Meeting Proceedings; (United States) Journal Volume: 20
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220100* -- Nuclear Reactor Technology-- Theory & Calculation
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
BARYONS
CHEMICAL COMPOSITION
COINCIDENCE METHODS
COMPUTER CODES
COST
COUNTING TECHNIQUES
DATA ACQUISITION
ELEMENTARY PARTICLES
EVEN-EVEN NUCLEI
FERMIONS
GAMMA SPECTRA
HADRONS
HEAVY NUCLEI
ISOTOPES
MASS
MONITORING
NEUTRONS
NUCLEI
NUCLEONS
PLUTONIUM 240
PLUTONIUM ISOTOPES
RADIOISOTOPES
SPECTRA
SPONTANEOUS FISSION RADIOISOTOPES
USES
YEARS LIVING RADIOISOTOPES