Range of slow positrons in metal overlayers on aluminum

B. Nielsen; K.G. Lynn; T.C. Leung; G.J. Kolk, van der; L.J. IJzendoorn, van

doi:10.1063/1.102694

Range of slow positrons in metal overlayers on aluminum

B. Nielsen
, K.G. Lynn
, T.C. Leung
, G.J. Kolk, van der
, L.J. IJzendoorn, van

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

Polycrystalline Pd and amorphous PdTa films on Al substrates were studied by a variable energy positron beam and by Rutherford backscattering. Since positron diffusion in the overlayers is limited, the range follows directly from the Doppler broadening as a function of incident positron energy. To observe possible effects of positron backscattering, a sandwich of Al/Pd/Al was studied as well. It was found that the mean penetration depth is not described well by (E)=A(µg/cm2)×En(E), if A and n are assumed to be material and energy independent.

Original language	English
Pages (from-to)	728-730
Number of pages	3
Journal	Applied Physics Letters
Volume	56
Issue number	8
DOIs	https://doi.org/10.1063/1.102694
Publication status	Published - 1990

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title = "Range of slow positrons in metal overlayers on aluminum",

abstract = "Polycrystalline Pd and amorphous PdTa films on Al substrates were studied by a variable energy positron beam and by Rutherford backscattering. Since positron diffusion in the overlayers is limited, the range follows directly from the Doppler broadening as a function of incident positron energy. To observe possible effects of positron backscattering, a sandwich of Al/Pd/Al was studied as well. It was found that the mean penetration depth is not described well by (E)=A(µg/cm2){\texttimes}En(E), if A and n are assumed to be material and energy independent.",

author = "B. Nielsen and K.G. Lynn and T.C. Leung and \{Kolk, van der\}, G.J. and \{IJzendoorn, van\}, L.J.",

year = "1990",

doi = "10.1063/1.102694",

language = "English",

volume = "56",

pages = "728--730",

journal = "Applied Physics Letters",

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publisher = "American Institute of Physics",

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T1 - Range of slow positrons in metal overlayers on aluminum

AU - Nielsen, B.

AU - Lynn, K.G.

AU - Leung, T.C.

AU - Kolk, van der, G.J.

AU - IJzendoorn, van, L.J.

PY - 1990

Y1 - 1990

N2 - Polycrystalline Pd and amorphous PdTa films on Al substrates were studied by a variable energy positron beam and by Rutherford backscattering. Since positron diffusion in the overlayers is limited, the range follows directly from the Doppler broadening as a function of incident positron energy. To observe possible effects of positron backscattering, a sandwich of Al/Pd/Al was studied as well. It was found that the mean penetration depth is not described well by (E)=A(µg/cm2)×En(E), if A and n are assumed to be material and energy independent.

AB - Polycrystalline Pd and amorphous PdTa films on Al substrates were studied by a variable energy positron beam and by Rutherford backscattering. Since positron diffusion in the overlayers is limited, the range follows directly from the Doppler broadening as a function of incident positron energy. To observe possible effects of positron backscattering, a sandwich of Al/Pd/Al was studied as well. It was found that the mean penetration depth is not described well by (E)=A(µg/cm2)×En(E), if A and n are assumed to be material and energy independent.

U2 - 10.1063/1.102694

DO - 10.1063/1.102694

M3 - Article

SN - 0003-6951

VL - 56

SP - 728

EP - 730

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 8

ER -

Range of slow positrons in metal overlayers on aluminum

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