The replacement of 3He implanted in Nb by subsequent 4He bombardment and vice versa

J. Roth; B. M.U. Scherzer; R. Behrisch; P. Børgesen

doi:10.1016/0029-554X(78)90837-6

The replacement of ³He implanted in Nb by subsequent ⁴He bombardment and vice versa

J. Roth
, B. M.U. Scherzer
, R. Behrisch
, P. Børgesen

School of Sys Sci Ind Engr

Binghamton University

Max Planck Institute for Plasma Physics

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

13 Scopus citations

Abstract

The exchange of helium isotopes ³He, ⁴He implanted into polycrystalline niobium at 30 and 50 keV was investigated by measuring the decrease of ³He during postimplantation of ⁴He and the increase of ³He implanted after preimplantation of ⁴He using the ³He(d, α)H reaction. At low doses both isotopes are trapped with nearly 100% efficiency until a saturation concentration of the isotope mixture has been obtained. Thereafter the exchange proceeds to a first approximation according to a simple mixing law. From this we conclude that at saturation concentration the binding energy of the helium to traps is low and the helium diffuses readily within the implanted layer.

Original language	English
Pages (from-to)	53-57
Number of pages	5
Journal	Nuclear Instruments and Methods
Volume	149
Issue number	1-3
DOIs	https://doi.org/10.1016/0029-554X(78)90837-6
State	Published - 1978

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10.1016/0029-554X(78)90837-6

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title = "The replacement of 3He implanted in Nb by subsequent 4He bombardment and vice versa",

abstract = "The exchange of helium isotopes 3He, 4He implanted into polycrystalline niobium at 30 and 50 keV was investigated by measuring the decrease of 3He during postimplantation of 4He and the increase of 3He implanted after preimplantation of 4He using the 3He(d, α)H reaction. At low doses both isotopes are trapped with nearly 100\% efficiency until a saturation concentration of the isotope mixture has been obtained. Thereafter the exchange proceeds to a first approximation according to a simple mixing law. From this we conclude that at saturation concentration the binding energy of the helium to traps is low and the helium diffuses readily within the implanted layer.",

author = "J. Roth and Scherzer, \{B. M.U.\} and R. Behrisch and P. B{\o}rgesen",

year = "1978",

doi = "10.1016/0029-554X(78)90837-6",

language = "English",

volume = "149",

pages = "53--57",

journal = "Nuclear Instruments and Methods",

issn = "0029-554X",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - The replacement of 3He implanted in Nb by subsequent 4He bombardment and vice versa

AU - Roth, J.

AU - Scherzer, B. M.U.

AU - Behrisch, R.

AU - Børgesen, P.

PY - 1978

Y1 - 1978

N2 - The exchange of helium isotopes 3He, 4He implanted into polycrystalline niobium at 30 and 50 keV was investigated by measuring the decrease of 3He during postimplantation of 4He and the increase of 3He implanted after preimplantation of 4He using the 3He(d, α)H reaction. At low doses both isotopes are trapped with nearly 100% efficiency until a saturation concentration of the isotope mixture has been obtained. Thereafter the exchange proceeds to a first approximation according to a simple mixing law. From this we conclude that at saturation concentration the binding energy of the helium to traps is low and the helium diffuses readily within the implanted layer.

AB - The exchange of helium isotopes 3He, 4He implanted into polycrystalline niobium at 30 and 50 keV was investigated by measuring the decrease of 3He during postimplantation of 4He and the increase of 3He implanted after preimplantation of 4He using the 3He(d, α)H reaction. At low doses both isotopes are trapped with nearly 100% efficiency until a saturation concentration of the isotope mixture has been obtained. Thereafter the exchange proceeds to a first approximation according to a simple mixing law. From this we conclude that at saturation concentration the binding energy of the helium to traps is low and the helium diffuses readily within the implanted layer.

UR - https://www.scopus.com/pages/publications/0017919032

U2 - 10.1016/0029-554X(78)90837-6

DO - 10.1016/0029-554X(78)90837-6

M3 - Article

SN - 0029-554X

VL - 149

SP - 53

EP - 57

JO - Nuclear Instruments and Methods

JF - Nuclear Instruments and Methods

IS - 1-3

ER -

The replacement of ³He implanted in Nb by subsequent ⁴He bombardment and vice versa

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