0000000000010352

AUTHOR

P. Puumalainen

showing 2 related works from this author

Low-lying levels of201Hg from the decay of201Au

1972

The decay of 26.4-min201Au has been investigated using chemically separated sources and Ge(Li), Si(Li), plastic and Nal(Tl) detectors in different singles and coincidence arrangements. The β-disintegration energy was measured to be 1.27 ± 0.10 MeV. Thirteen γ-rays were observed to belong to this decay and the new levels at 543, 549.2, 552.8, 559.1, 605.7, 645.4, 732 and 1188 keV were established in201Hg, in addition to the three previously known excited states below 200 keV.

PhysicsNuclear and High Energy PhysicsDecay schemeIsotopes of germaniumExcited stateIsotopes of protactiniumIsotopes of zirconiumCoulomb excitationNuclear isomerAtomic physicsIsotopes of europiumZeitschrift für Physik A Hadrons and nuclei
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A selective microscale x-ray fluorescence analyzing method for determination of trace elements

1973

Abstract A new selective X-ray fluorescence analyzing method for trace element determination has been developed. In this method each trace element is measured independently. The excitation source is an X-ray tube that has a changeable anode and a variable high voltage. The exciting radiation is shaped with critical absorbers. The sample is viewed at backward angles through an absorber to reduce backscattered radiation. The estimated accuracy of this method is of the order of 10 per cent in thesub-ppm range of trace element concentration in organic samples. Measurement times are of the order of a few minutes.

RadiationTrace AmountsChemistrySpectrum AnalysisTrace elementAnalytical chemistryX-ray fluorescenceRadiationFluorescenceFluorescenceTrace ElementsAnodeNuclear Energy and EngineeringMethodsRadiology Nuclear Medicine and imagingEnvironmental PollutionMicroscale chemistryExcitationThe International Journal of Applied Radiation and Isotopes
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