Probing He bubbles in naturally aged and annealed δ-Pu alloys using ultra-small-angle x-ray scattering

Jeffries, J. R.; Hammons, J. A.; Willey, T. M.; Wall, M. A.; Ruddle, D.; Ilavsky, J.; Allen, P. G.; van Buuren, T.

doi:10.1016/j.jnucmat.2017.10.058

Title: Probing He bubbles in naturally aged and annealed δ-Pu alloys using ultra-small-angle x-ray scattering

Journal Article · Tue Oct 31 00:00:00 EDT 2017 · Journal of Nuclear Materials

DOI:https://doi.org/10.1016/j.jnucmat.2017.10.058· OSTI ID:1420075

Jeffries, J. R. ^[1]; Hammons, J. A. ^[1];

^[1]; Wall, M. A. ^[1]; Ruddle, D. ^[1];

^[2]; Allen, P. G. ^[1]; van Buuren, T. ^[1]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)

Here, the self-irradiation of Pu alloys generates He that is trapped within the metal matrix in the form of He bubbles. The distribution of these He bubbles in δ-phase Pu-Ga alloys exhibits a peak near a radius of 0.7 nm, and this size is remarkably stable as function of time. When annealed, the He bubbles in δ-Pu alloys grow, coarsening the distribution. However, the magnitude of this coarsening is uncertain, as different experimental methods reveal bubbles that differ by at least one order of magnitude. Small-angle x-ray scattering results, which can probe a wide range of bubble sizes, imply only a mild coarsening of the He bubble distribution for an annealing treatment of 425°C for 24 h, and analysis of the He bubble content suggests that He is actually lost from the bubbles with annealing.

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Research Organization:: Argonne National Lab. (ANL), Argonne, IL (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC02-06CH11357; AC52-07NA27344

OSTI ID:: 1420075

Alternate ID(s):: OSTI ID: 1438723; OSTI ID: 1549453

Report Number(s):: LLNL-JRNL-736296; 137553; TRN: US1801452

Journal Information:: Journal of Nuclear Materials, Vol. 498, Issue C; ISSN 0022-3115

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 2 works

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Cited By (1)

He Bubble Concentration, Size and Strain in Implanted Aluminum by SAXS/WAXS Hammons, Joshua A.; Tumey, Scott J.; Idell, Yaakov JOM, Vol. 72, Issue 1 https://doi.org/10.1007/s11837-019-03763-7	journal	September 2019

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