Application of nuclear reaction geometry for 3He depth profiling in nuclear ceramics

Direct observation of nuclear reactions leading to the emission of charged particles (p or α) allows to determine specifically the spatial distribution of isotopes of light elements from 1H to 23Na and despite low cross section values some heavier isotopes from 24Mg to 68Zn. After a brief overview o...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms Beam interactions with materials and atoms, 2003-05, Vol.206 (Complete), p.1077-1082
Main Authors: Trocellier, Patrick, Gosset, Dominique, Simeone, David, Costantini, Jean Marc, Deschanels, Xavier, Roudil, Danielle, Serruys, Yves, Grynszpan, Robert, Saudé, Sébastien, Beauvy, Michel
Format: Article
Language:English
Subjects:
Diffusion
Helium
Waste management
μNRA
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Summary:Direct observation of nuclear reactions leading to the emission of charged particles (p or α) allows to determine specifically the spatial distribution of isotopes of light elements from 1H to 23Na and despite low cross section values some heavier isotopes from 24Mg to 68Zn. After a brief overview of the analytical capabilities offered by μNRA, this contribution is focussed on the measurement of the thermal diffusion coefficient of 3He in crystalline ceramics. The experimental method is based on the observation of the 3He(d, p)α reaction. Due to the severe energy loss along the outgoing path, the choice of the detection of the high energy proton or recoil α nucleus depends on the average depth of the 3He distribution. For near surface distributions (
ISSN:0168-583X
1872-9584
DOI:10.1016/S0168-583X(03)00914-5