Utilization of the intense pulsed neutron source (IPNS) at Argonne National Laboratory for neutron activation analysis

Conference · Sat Jan 01 04:00:00 EST 1983

OSTI ID:5579838

Heinrich, R R; Greenwood, L R; Popek, R J; Schulke, Jr, A W

The Intense Pulsed Neutron Source (IPNS) neutron scattering facility (NSF) has been investigated for its applicability to neutron activation analysis. A polyethylene insert has been added to the vertical hole VT3 which enhances the thermal neutron flux by a factor of two. The neutron spectral distribution at this position has been measured by the multiple-foil technique which utilized 28 activation reactions and the STAYSL computer code. The validity of this spectral measurement was tested by two irradiations of National Bureau of Standards SRM-1571 (orchard leaves), SRM-1575 (pine needles), and SRM-1645 (river sediment). The average thermal neutron flux for these irradiations normalized to 10 ..mu..amp proton beam is 4.0 x 10/sup 11/ n/cm/sup 2/-s. Concentrations of nine trace elements in each of these SRMs have been determined by gamma-ray spectrometry. Agreement of measured values to certified values is demonstrated to be within experiment error.

• Research Organization: Argonne National Lab., IL (USA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5579838
• Report Number(s): CONF-831025-25; ON: DE84003619
• Country of Publication: United States
• Language: English

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ACCELERATOR FACILITIES
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ACTIVATION ANALYSIS
CALIBRATION
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CYCLIC ACCELERATORS
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NEUTRON SOURCES
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