atom probe
Nuclear Materials Characterization by Tomographic Atom Probe
... Tomographic Atom Probe, nanoanalytical technique with atomic resolution. Atom Probe Tomography (APT) is an extension in 3D of the atom-probe field ion microscope (APFIM), an ...
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Precipitation in stretched Al Cu Mg alloys with reduced alloying content studied by DSC, TEM and atom probe
... 3-dimensional atom probe (3DAP) techniques to provide a comprehensive insight into the precipitation behaviour of two Al-Cu-Mg alloys with reduced alloying content (compared to standard 2024 and 2018 type ...
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Controlling residual hydrogen gas in mass spectra during pulsed laser atom probe tomography
... an atom probe instrument limits the ability to measure H con- centration in metals and ...in atom probe instruments could help reduce these ...laser atom probe ...
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Diffusivity and Solubility of Cu in a Reactor Pressure Vessel Steel Studied by Atom Probe Tomography [Editor's Announcement]
... The diffusivity and solubility limit of Cu in A533B steel, which is used in reactor pressure vessels, were studied by atom probe tomography (APT). Cu-A533B steel diffusion couples were annealed at ...
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Atom Probe Study of Irradiation-Enhanced α′ Precipitation in Neutron-Irradiated Fe–Cr Model Alloys
... The blurring of the APT data at the interface could cause a deficit of precipitate component (Cr for this study) in very small clusters [21]. As the size of the precipitate increased, the blurring effects at the ...
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3D atom probe tomography study on segregation of yttrium in modified Al Si alloys
... Yttrium segregation behavior in Al-Si alloys has been studied using the three- dimensional atom probe tomography technique. Al-Si alloys were prepared by casting method, and yttrium was added to modify the ...
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Composition Analysis of III Nitrides at the Nanometer Scale: Comparison of Energy Dispersive X ray Spectroscopy and Atom Probe Tomography
... As optoelectronic devices push towards higher perform- ance, engineering the quantum confinement at the nanoscale become the key for device design. However, such a fine tuning of the physical properties faces one major ...
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Elemental distributions within multiphase quaternary Pb chalcogenide thermoelectric materials determined through three dimensional atom probe tomography
... (3D) atom-‐probe tomography (APT) to provide high sensitivity measurements of matrix and precipitate compositions, and to determine the spatial distribution of sodium both between and within individual ...
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Ion-irradiation induced clustering in W-Re-Ta, W-Re and W-Ta alloys: An atom probe tomography and nanoindentation study
... K. Atom probe tomography and nanoindentation were used to charac- terise the chemical and physical properties of the irradiation-induced clusters and the mechanical properties of the irradiated ...
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Experimental Investigation of the Early Stage of Precipitation on Binary Al Li, Al Cu Alloys and Ternary Al Li Cu Alloys by Means of Atom Probe Tomography
... Needle-shaped specimens were then fabricated using electro-polishing. This electro- polishing procedure was performed in a solution containing 25 vol.% of nitric acid in methanol with a 3 - 5 V DC electric potential. APT ...
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Mechanisms of deformation induced trace element migration in zircon resolved by atom probe and correlative microscopy
... Please cite this article as: Reddy, S.M., Riessen, A.v., Saxey, D.W., Johnson, T.E., Rickard, W.D.A., Fougerouse, D., Fischer, S., Prosa, T.J., Rice, K.P., Reinhard, D.A., Chen, Y., Olson, D., Mechanisms of ...
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Analysis of Excitation Pulsed Signal Propagation for Atom Probe Tomography System
... in Atom Probe Tomography. After brief description of the atom probe functioning principle, we examine the excitation electrical pulse signal integrity along the electric pulser (E-pulser) ...
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An environmental transfer hub for multimodal atom probe tomography
... Atom probe tomography (APT) is a powerful technique that is able to determine both the three-dimensional (3D) structure and elemental composition of materials with atomic resolution across many disciplines ...
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Atomic characterization of Si nanoclusters embedded in SiO2 by atom probe tomography
... where m is the mass of the evaporated ion (in kg), n its electronic charge, L the distance between the tip and the detector (in m), and t the time of flight of the ion (in s). This calculation permits identifying the ...
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Atom probe tomography analysis of the reference zircon gj-1: An interlaboratory study
... and assessing the role of different aspects of the atom probe workflow on reproducibility. This is essential to allow correct evaluation of APT results and full utilization of this emerging technique within ...
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Intergranular Segregation in the Pressure Vessel Steel of a Commercial Nuclear Reactor Studied by Atom Probe Tomography
... selected from the matrix (as indicated by the arrow [D] in Fig. 4(b)), the dislocation at the small GB (the arrow [C] in Fig. 4(b)) and the GB (the arrows [A] and [B] in Fig. 2(b)). The enlarged atom maps of these ...
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Developing an Imaging System to Monitor Atom Traps for Neutral Atom Quantum Computing
... To better understand the Doppler cooling process, we further examine the absorption and emission cycles occurring in the atoms. Our trap involves two lasers: the trap laser and the pump laser. The trap laser works to ...
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Rydberg atom quantum technologies
... Rydberg atom interactions [13] play a particularly important part in contemporary Rydberg atom physics and are an example of where the physics can be more complicated and deviations from simple scaling laws ...
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Atom-Atom-Path similarity and Sphere Exclusion clustering: tools for prioritizing fragment hits
... to 3.4 mM. As expected a monotonically decreasing curve of green points is formed by the cluster seeds. Most cluster members have lower LE than their re- spective seeds and, hence, appear below the curve. The cluster ...
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The Abduction of the Atom: An Exercise in Hypothesizing
... Consider the following designation for the elements in the theory process: I: The atom has a positively charged solid center (It) and has embedded electrons (h). P: Positi[r] ...
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