A pulse generator simulating Ge-detector signals for dead-time and pile-up correction in gamma-ray spectrometry in INAA without distortion of the detector spectrum

Then, S. S.; Geurink, F; Bode, P.; Lindstrom, Richard M.

doi:10.1007/bf02034473

Cited by 22 publications

(1 citation statement)

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“…A 1.004 mg sphere, prepared by melting gold foil, was compared with a 33 µm diameter gold wire 6.0 cm long, weighing 1.02 mg. Each sample was irradiated for six hours (the maximum permissible time) in the RT1 rabbit facility of the NIST Center for Neutron Research, at a neutron flux of 1.05 x 10 14 n/cm 2 s. Beginning a few hours after the irradiation ended, the source was counted repeatedly for 2 h live time through about 2.5 cm of lead absorber at 40 cm from a wellcharacterized Ge gamma detector (relative efficiency 37.3%, resolution 1.70 keV), collecting ∼200 spectra during seven halflives. A precision pulser [20,21] monitored the rate-related spectrometer losses. At the beginning of the measurement, each source had an activity of 62 mCi (2.3 GBq), emitting 2.3 x 10 12 neutrinos/s•g.…”

Section: Methodsmentioning

confidence: 99%

Absence of a self-induced decay effect in 198Au

Lindstrom¹,

Fischbach²,

Buncher³

et al. 2011

Nuclear Instruments and Methods in Physics Research Section A:

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We report the results of an improved experiment aimed at determining whether the half-life ($T_{1/2}$) of $^{198}$Au depends on the shape of the source. In this experiment, the half-lives of a gold sphere and a thin gold wire were measured after each had been irradiated in the NIST Center for Neutron Research. In comparison to an earlier version of this experiment, both the specific activities of the samples and their relative surface/volume ratios have been increased, leading to an improved test for the hypothesized self-induced decay (SID) effect. We find T_1/2(sphere)/T_1/2(wire) = 0.9993+/-0.0002, which is compatible with no SID effect.Comment: 3 pages, no figure

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Section: Methodsmentioning

confidence: 99%

Absence of a self-induced decay effect in 198Au

Lindstrom¹,

Fischbach²,

Buncher³

et al. 2011

Nuclear Instruments and Methods in Physics Research Section A:

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Quality Control and Assurance of Neutron Activation Analysis

Bode

2010

Encyclopedia of Analytical Chemistry

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Quality assurance is a proactive operation to minimize the probability of errors in an analysis procedure. It also includes quality control, the operation by which the occurrence of errors is inspected once the analysis has been completed. Quality assurance procedures are described for individual steps in neutron activation analysis, namely, preparation of the test portion, selection of analytical protocol, calibration, instrument performance checks, irradiation, decay, measurement, spectrum analysis and interpretation, internal and external quality control, as well as for ensuring the technical competence of the personnel involved. The emphasis is on the procedures for instrumental neutron activation analysis (INAA), since it is the most widely applied method of neutron activation analysis (NAA).

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Modern performance control of gamma-ray spectrometers for INAA

Ammerlaan

Bode

1997

J Radioanal Nucl Chem

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A pulse generator simulating Ge-detector signals for dead-time and pile-up correction in gamma-ray spectrometry in INAA without distortion of the detector spectrum

Cited by 22 publications

References 1 publication

Absence of a self-induced decay effect in 198Au

Absence of a self-induced decay effect in 198Au

Quality Control and Assurance of Neutron Activation Analysis

Modern performance control of gamma-ray spectrometers for INAA

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