Summary & Purpose
These files are sample needles analyzed via Local Electrode Atom Probe (LEAP) for the purpose of conducting cluster analysis to characterize nanoscale oxide phases.
Date of Publication or Submission
This research was sponsored in part by the US Nuclear Regulatory Commission Grant NRC-HQ-84-14-G-0056, the Micron Foundation, and by the US DOE, Office of Nuclear Energy under DOE Idaho Operations Office Contract DE-AC07-05ID14517, as part of the Nuclear Science User Facilities experiments 13-419, 14-486, 15-540, 15-569, 16-625, and 16-710.
Single Dataset or Series?
.RHIT (raw LEAP data)
Irradiation conducted at Michigan Ion Beam Laboratory (MIBL). Dose rate = 1.65 x 10^(-4) dpa/s. Atom probe tomography (APT) needles were fabricated using an FEI Quanta 3D FEG focused ion beam (FIB). Sample wedges ~2 μ wide and ~3 μ deep were cut and lifted in a direction perpendicular to the surface of the material. The wedges were subsequently mounted onto silicon posts and partitioned, resulting in 6-8 APT tips per specimen. The tips were then milled using annular ring patterns to shape them into needles with a tip radius = 50 nm Each needle was sharpened such that the tip of the needle was positioned just below the irradiated bulk surface. Each needle was analyzed with a Cameca LEAP 4000X HR at CAES, operated in laser pulsed mode with samples held at 40 K. Laser power ranged from 40-100 pJ, with a pulse repetition rate of 200 kHz.
LEAP analysis conducted between 20160329-20160420
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Swenson, Matthew; Wu, Yaqiao; and Wharry, Janelle. (2017). Fe-9%Cr ODS, Fe2+ irradiated to 1 dpa at 500C, APT Data [Data set]. Retrieved from http://dx.doi.org/10.18122/B2VS3F