Systematic investigation of the formation behavior of helium bubbles in tungsten

M. Miyamoto, S. Mikami, H. Nagashima, N. Iijima, D. Nishijima, R. P. Doerner, N. Yoshida, H. Watanabe, Y. Ueda, A. Sagara

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

Abstract The formation of He bubbles in tungsten under exposure to a He plasma was systematically investigated using low energy (∼50 eV) He+ ions with a wide fluence range (∼1023 to 1026 m-2) in the linear divertor plasma simulator PISCES-A at several temperatures (523-973 K). TEM observations after thinning exposed W samples with FIB revealed that the layer thickness (>30 nm) of He bubbles largely exceeds the ion implantation range of a few nm. The size of He bubbles was found to increase with an increase in the sample temperature: it was around 10 nm at 973 K, while only small He bubbles of 1-2 nm were observed at <773 K. In addition, to obtain information on the initial formation behavior, in-situ TEM observations during He ion irradiation were also performed.

Original languageEnglish
Article number48703
Pages (from-to)333-336
Number of pages4
JournalJournal of Nuclear Materials
Volume463
DOIs
Publication statusPublished - Jul 22 2015

Fingerprint

Helium
Tungsten
tungsten
bubbles
helium
Transmission electron microscopy
Plasmas
Ion bombardment
Ion implantation
Simulators
Ions
Temperature
transmission electron microscopy
ion irradiation
simulators
ion implantation
fluence
temperature
ions
energy

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

Cite this

Miyamoto, M., Mikami, S., Nagashima, H., Iijima, N., Nishijima, D., Doerner, R. P., ... Sagara, A. (2015). Systematic investigation of the formation behavior of helium bubbles in tungsten. Journal of Nuclear Materials, 463, 333-336. [48703]. https://doi.org/10.1016/j.jnucmat.2014.10.098

Systematic investigation of the formation behavior of helium bubbles in tungsten. / Miyamoto, M.; Mikami, S.; Nagashima, H.; Iijima, N.; Nishijima, D.; Doerner, R. P.; Yoshida, N.; Watanabe, H.; Ueda, Y.; Sagara, A.

In: Journal of Nuclear Materials, Vol. 463, 48703, 22.07.2015, p. 333-336.

Research output: Contribution to journalArticle

Miyamoto, M, Mikami, S, Nagashima, H, Iijima, N, Nishijima, D, Doerner, RP, Yoshida, N, Watanabe, H, Ueda, Y & Sagara, A 2015, 'Systematic investigation of the formation behavior of helium bubbles in tungsten', Journal of Nuclear Materials, vol. 463, 48703, pp. 333-336. https://doi.org/10.1016/j.jnucmat.2014.10.098
Miyamoto M, Mikami S, Nagashima H, Iijima N, Nishijima D, Doerner RP et al. Systematic investigation of the formation behavior of helium bubbles in tungsten. Journal of Nuclear Materials. 2015 Jul 22;463:333-336. 48703. https://doi.org/10.1016/j.jnucmat.2014.10.098
Miyamoto, M. ; Mikami, S. ; Nagashima, H. ; Iijima, N. ; Nishijima, D. ; Doerner, R. P. ; Yoshida, N. ; Watanabe, H. ; Ueda, Y. ; Sagara, A. / Systematic investigation of the formation behavior of helium bubbles in tungsten. In: Journal of Nuclear Materials. 2015 ; Vol. 463. pp. 333-336.
@article{1a2a0caafd3046f7ad6c93389cfc14f3,
title = "Systematic investigation of the formation behavior of helium bubbles in tungsten",
abstract = "Abstract The formation of He bubbles in tungsten under exposure to a He plasma was systematically investigated using low energy (∼50 eV) He+ ions with a wide fluence range (∼1023 to 1026 m-2) in the linear divertor plasma simulator PISCES-A at several temperatures (523-973 K). TEM observations after thinning exposed W samples with FIB revealed that the layer thickness (>30 nm) of He bubbles largely exceeds the ion implantation range of a few nm. The size of He bubbles was found to increase with an increase in the sample temperature: it was around 10 nm at 973 K, while only small He bubbles of 1-2 nm were observed at <773 K. In addition, to obtain information on the initial formation behavior, in-situ TEM observations during He ion irradiation were also performed.",
author = "M. Miyamoto and S. Mikami and H. Nagashima and N. Iijima and D. Nishijima and Doerner, {R. P.} and N. Yoshida and H. Watanabe and Y. Ueda and A. Sagara",
year = "2015",
month = "7",
day = "22",
doi = "10.1016/j.jnucmat.2014.10.098",
language = "English",
volume = "463",
pages = "333--336",
journal = "Journal of Nuclear Materials",
issn = "0022-3115",
publisher = "Elsevier",

}

TY - JOUR

T1 - Systematic investigation of the formation behavior of helium bubbles in tungsten

AU - Miyamoto, M.

AU - Mikami, S.

AU - Nagashima, H.

AU - Iijima, N.

AU - Nishijima, D.

AU - Doerner, R. P.

AU - Yoshida, N.

AU - Watanabe, H.

AU - Ueda, Y.

AU - Sagara, A.

PY - 2015/7/22

Y1 - 2015/7/22

N2 - Abstract The formation of He bubbles in tungsten under exposure to a He plasma was systematically investigated using low energy (∼50 eV) He+ ions with a wide fluence range (∼1023 to 1026 m-2) in the linear divertor plasma simulator PISCES-A at several temperatures (523-973 K). TEM observations after thinning exposed W samples with FIB revealed that the layer thickness (>30 nm) of He bubbles largely exceeds the ion implantation range of a few nm. The size of He bubbles was found to increase with an increase in the sample temperature: it was around 10 nm at 973 K, while only small He bubbles of 1-2 nm were observed at <773 K. In addition, to obtain information on the initial formation behavior, in-situ TEM observations during He ion irradiation were also performed.

AB - Abstract The formation of He bubbles in tungsten under exposure to a He plasma was systematically investigated using low energy (∼50 eV) He+ ions with a wide fluence range (∼1023 to 1026 m-2) in the linear divertor plasma simulator PISCES-A at several temperatures (523-973 K). TEM observations after thinning exposed W samples with FIB revealed that the layer thickness (>30 nm) of He bubbles largely exceeds the ion implantation range of a few nm. The size of He bubbles was found to increase with an increase in the sample temperature: it was around 10 nm at 973 K, while only small He bubbles of 1-2 nm were observed at <773 K. In addition, to obtain information on the initial formation behavior, in-situ TEM observations during He ion irradiation were also performed.

UR - http://www.scopus.com/inward/record.url?scp=84937726657&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84937726657&partnerID=8YFLogxK

U2 - 10.1016/j.jnucmat.2014.10.098

DO - 10.1016/j.jnucmat.2014.10.098

M3 - Article

AN - SCOPUS:84937726657

VL - 463

SP - 333

EP - 336

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

SN - 0022-3115

M1 - 48703

ER -