Determination of oxygen in high purity gallium by using charged particle activation analysis

F. Ditrói, S. Takács, I. Mahunka, P. Mikecz, Gy Tóth

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2 Citations (Scopus)

Abstract

The determination of the oxygen content in high purity gallium was performed by 18F producing 3He induced nuclear reactions. The 16O(3He, p)18F and 16O(3He, n)18Ne18F reactions were chosen taking into account their 10 considerable cross section and the half-life of the produced positron emitter isotope. The samples were prepared under nitrogen atmosphere to avoid further oxidation. 6.5 MeV 3He beam was used for irradiation with a beam current of less than 100 nA. To avoid melting the samples were frozen during the irradiation. A well defined surface layer of the activated samples was removed, and the 511 keV annihilation radiation was measured by HpGe gamma-spectrometry. Half-life measurement was also applied to separate the 18F activity from the produced other positron emitter isotopes. The oxygen concentration of the samples was between 5 and 100 μg/g.

Original languageEnglish
Pages (from-to)166-169
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume68
Issue number1-4
DOIs
Publication statusPublished - May 2 1992

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activation analysis
Activation analysis
Gallium
Positrons
Charged particles
Isotopes
gallium
charged particles
purity
Irradiation
Oxygen
Nuclear reactions
oxygen
half life
Spectrometry
positrons
emitters
Melting
Nitrogen
isotopes

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Instrumentation
  • Surfaces and Interfaces

Cite this

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abstract = "The determination of the oxygen content in high purity gallium was performed by 18F producing 3He induced nuclear reactions. The 16O(3He, p)18F and 16O(3He, n)18Ne18F reactions were chosen taking into account their 10 considerable cross section and the half-life of the produced positron emitter isotope. The samples were prepared under nitrogen atmosphere to avoid further oxidation. 6.5 MeV 3He beam was used for irradiation with a beam current of less than 100 nA. To avoid melting the samples were frozen during the irradiation. A well defined surface layer of the activated samples was removed, and the 511 keV annihilation radiation was measured by HpGe gamma-spectrometry. Half-life measurement was also applied to separate the 18F activity from the produced other positron emitter isotopes. The oxygen concentration of the samples was between 5 and 100 μg/g.",
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T1 - Determination of oxygen in high purity gallium by using charged particle activation analysis

AU - Ditrói, F.

AU - Takács, S.

AU - Mahunka, I.

AU - Mikecz, P.

AU - Tóth, Gy

PY - 1992/5/2

Y1 - 1992/5/2

N2 - The determination of the oxygen content in high purity gallium was performed by 18F producing 3He induced nuclear reactions. The 16O(3He, p)18F and 16O(3He, n)18Ne18F reactions were chosen taking into account their 10 considerable cross section and the half-life of the produced positron emitter isotope. The samples were prepared under nitrogen atmosphere to avoid further oxidation. 6.5 MeV 3He beam was used for irradiation with a beam current of less than 100 nA. To avoid melting the samples were frozen during the irradiation. A well defined surface layer of the activated samples was removed, and the 511 keV annihilation radiation was measured by HpGe gamma-spectrometry. Half-life measurement was also applied to separate the 18F activity from the produced other positron emitter isotopes. The oxygen concentration of the samples was between 5 and 100 μg/g.

AB - The determination of the oxygen content in high purity gallium was performed by 18F producing 3He induced nuclear reactions. The 16O(3He, p)18F and 16O(3He, n)18Ne18F reactions were chosen taking into account their 10 considerable cross section and the half-life of the produced positron emitter isotope. The samples were prepared under nitrogen atmosphere to avoid further oxidation. 6.5 MeV 3He beam was used for irradiation with a beam current of less than 100 nA. To avoid melting the samples were frozen during the irradiation. A well defined surface layer of the activated samples was removed, and the 511 keV annihilation radiation was measured by HpGe gamma-spectrometry. Half-life measurement was also applied to separate the 18F activity from the produced other positron emitter isotopes. The oxygen concentration of the samples was between 5 and 100 μg/g.

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