MicroSAMPO — Personal computer based advanced gamma spectrum analysis system

Aarnio, P.; Routti, J.T.; Sandberg, Jorma

doi:10.1007/bf02041336

Cited by 71 publications

(9 citation statements)

References 2 publications

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“…The γ -ray spectra were analyzed for peak locations and areas using the fitting code SAMPO [14]. Energy calibrations for the spectroscopy studies were done by counting Ru samples simultaneously with samples of 133 Ba and 152 Eu [15].…”

Section: Methodsmentioning

confidence: 99%

Neutron capture by Ru: Neutron cross sections ofRu96,102,104andγ-ray spectroscopy in the

Krane

2010

Phys. Rev. C

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Cross sections for radiative capture of neutrons have been measured for stable isotopes of Ru with mass numbers 96, 102, and 104. From separate irradiations using thermal and epithermal neutrons, independent values for the thermal cross section and effective resonance integral have been determined. Spectroscopic studies of the γ rays emitted in the decays of 97,103,105 Ru have enabled improvements in the precision of the energies and intensities of the radiations along with corresponding improvements in the β-decay feeding intensities and the energies of the levels in the respective daughter nuclei. Similar spectroscopic measurements of the decays of 105 Rh (daughter of 105 Ru) and 96 Tc (produced from n, p reactions on 96 Ru) have resulted in improved γ -ray energies and intensities in those decays.

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Section: Methodsmentioning

confidence: 99%

Neutron capture by Ru: Neutron cross sections ofRu96,102,104andγ-ray spectroscopy in the

Krane

2010

Phys. Rev. C

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“…All these geometries were calibrated with Amershams mixed gamma solution. Quantitative analysis of the gamma spectra was done with a Micro-Sampo program manufactured by Canberra (Aarnio et al, 1988).…”

Section: Laboratory Analysesmentioning

confidence: 99%

Sedimentation and distribution of gamma-emitting radionuclides in bottom sediments of southern Lake P�ij�nne, Finland, after the Chernobyl accident

Kansanen¹,

et al. 1991

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The rates of sedimentation of fallout nuclides were determined by means of sediment traps during 28 months after the Chernobyl accident in southern Lake Paijanne, Finland. The spatial distribution of the radionuclide content of the lake bottom was studied on 35 sediment cores in winters 1987/88 and 1988/89. The results were compared with simultaneous observations of the radionuclide content of the water and seston. The role of different transfer mechanisms in the elimination of radionuclides from the water column is discussed.The values recorded for the flux to the lake sediments were on average of the same order of magnitude as the initial deposition on the lake surface (Cs-137 65 kBqm 2). The radionuclide flux to the sediments was rapid during the first months after the accident. After that the elimination of dissolved nuclides from the water mass became significantly slower. The highest flux rate was that of Ce-144 and the lowest that of Rh-106 (Ru-106). Of the radiocesium, about half of the initial inventory was transferred to the sediments after the first observation year.The content of radionuclides showed considerable spatial variation on the lake bottom (Cs-137 7-280 kBqm -2). Direct adsorption of radiocesium explains unexpectedly high concentrations on shallow erosion bottoms. There was a clear tendency for the concentrations to increase with depth, as a result of the focusing effect. Sediment resuspension had a significant impact on the total flux of radionuclides to deepwater sediments. Estimates were made of the resuspended flux of radionuclides.

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“…The signals were accumulated with a computer-based digital spectroscopy system. The spectra were analyzed using the peak-fitting code SAMPO (Aarnio et al, 1988) to determine energies and intensities.…”

Section: Methodsmentioning

confidence: 99%