Trap mutation in He-doped ion-implanted tungsten

MS Abd El Keriem; DP van der Werf; F PLEITER

doi:10.1007/BF00567609

Trap mutation in He-doped ion-implanted tungsten

MS Abd El Keriem^*, DP van der Werf, F PLEITER

^*Corresponding author for this work

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

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Abstract

In this work, we report on an investigation of the defect complexes InVe(2)He(n) in tungsten by means of PAC. The release steps InVe(2)He(n), --> InV2Hen-1 + He were identified for n = 1-5. The dissociation energies, in the range of 2.9-4.5 eV, agree perfectly with the values that have been previously determined by means of THDS. The quadrupole frequency is about 122 Mrad/s for n = 1,2 and about 101 Mrad/s for n = 3,4. These values are smaller than the frequency of the undecorated vacancy (n = 0). The vacancy mutates into a divacancy if it is filled with about 10 He atoms, giving rise to a quadrupole frequency of about 218 Mrad/s. This so-called ''trap mutation'' ultimately leads to bubble information. We observed at least three different bubble-associated quadrupole interactions.

Original language	English
Pages (from-to)	787-791
Number of pages	5
Journal	Hyperfine Interactions
Volume	79
Issue number	1-4
DOIs	https://doi.org/10.1007/BF00567609
Publication status	Published - 1993
Event	Yamada Conference XXXIV, The IXth International Conference on Hyperfine Interactions (HFI-IX) - , Japan Duration: 17-Aug-1992 → 21-Aug-1992

Keywords

HELIUM
IMPURITIES
CLUSTERS
ATOMS

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Trap mutation in He-doped ion-implanted tungsten
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title = "Trap mutation in He-doped ion-implanted tungsten",

abstract = "In this work, we report on an investigation of the defect complexes InVe(2)He(n) in tungsten by means of PAC. The release steps InVe(2)He(n), --> InV2Hen-1 + He were identified for n = 1-5. The dissociation energies, in the range of 2.9-4.5 eV, agree perfectly with the values that have been previously determined by means of THDS. The quadrupole frequency is about 122 Mrad/s for n = 1,2 and about 101 Mrad/s for n = 3,4. These values are smaller than the frequency of the undecorated vacancy (n = 0). The vacancy mutates into a divacancy if it is filled with about 10 He atoms, giving rise to a quadrupole frequency of about 218 Mrad/s. This so-called ''trap mutation'' ultimately leads to bubble information. We observed at least three different bubble-associated quadrupole interactions.",

keywords = "HELIUM, IMPURITIES, CLUSTERS, ATOMS",

author = "{El Keriem}, {MS Abd} and {van der Werf}, DP and F PLEITER",

year = "1993",

doi = "10.1007/BF00567609",

language = "English",

volume = "79",

pages = "787--791",

journal = "Hyperfine Interactions",

issn = "0304-3843",

publisher = "BALTZER SCI PUBL BV",

number = "1-4",

note = "Yamada Conference XXXIV, The IXth International Conference on Hyperfine Interactions (HFI-IX) ; Conference date: 17-08-1992 Through 21-08-1992",

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TY - JOUR

T1 - Trap mutation in He-doped ion-implanted tungsten

AU - El Keriem, MS Abd

AU - van der Werf, DP

AU - PLEITER, F

PY - 1993

Y1 - 1993

N2 - In this work, we report on an investigation of the defect complexes InVe(2)He(n) in tungsten by means of PAC. The release steps InVe(2)He(n), --> InV2Hen-1 + He were identified for n = 1-5. The dissociation energies, in the range of 2.9-4.5 eV, agree perfectly with the values that have been previously determined by means of THDS. The quadrupole frequency is about 122 Mrad/s for n = 1,2 and about 101 Mrad/s for n = 3,4. These values are smaller than the frequency of the undecorated vacancy (n = 0). The vacancy mutates into a divacancy if it is filled with about 10 He atoms, giving rise to a quadrupole frequency of about 218 Mrad/s. This so-called ''trap mutation'' ultimately leads to bubble information. We observed at least three different bubble-associated quadrupole interactions.

AB - In this work, we report on an investigation of the defect complexes InVe(2)He(n) in tungsten by means of PAC. The release steps InVe(2)He(n), --> InV2Hen-1 + He were identified for n = 1-5. The dissociation energies, in the range of 2.9-4.5 eV, agree perfectly with the values that have been previously determined by means of THDS. The quadrupole frequency is about 122 Mrad/s for n = 1,2 and about 101 Mrad/s for n = 3,4. These values are smaller than the frequency of the undecorated vacancy (n = 0). The vacancy mutates into a divacancy if it is filled with about 10 He atoms, giving rise to a quadrupole frequency of about 218 Mrad/s. This so-called ''trap mutation'' ultimately leads to bubble information. We observed at least three different bubble-associated quadrupole interactions.

KW - HELIUM

KW - IMPURITIES

KW - CLUSTERS

KW - ATOMS

U2 - 10.1007/BF00567609

DO - 10.1007/BF00567609

M3 - Article

SN - 0304-3843

VL - 79

SP - 787

EP - 791

JO - Hyperfine Interactions

JF - Hyperfine Interactions

IS - 1-4

T2 - Yamada Conference XXXIV, The IXth International Conference on Hyperfine Interactions (HFI-IX)

Y2 - 17 August 1992 through 21 August 1992

ER -

Trap mutation in He-doped ion-implanted tungsten

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