Jeff Terry
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View article: Actinide 5f Occupations: The Case of PuO2
Actinide 5f Occupations: The Case of PuO2 Open
In actinide chemistry, the formal number of open‐shell 5f electrons, n(open), is a well‐defined quantity with an integer value. The effective 5f occupation, n(f), additionally takes donation and back‐donation into account, generally has a …
View article: What's in a Name? “ESCA” or “XPS”? A Discussion of Comments Made by Kai Siegbahn More Than Four Decades Ago Regarding the Name of the Technique
What's in a Name? “ESCA” or “XPS”? A Discussion of Comments Made by Kai Siegbahn More Than Four Decades Ago Regarding the Name of the Technique Open
In an interview in 1982, which was 1 year after he shared the Nobel Prize, Kai Siegbahn was asked about his opinion regarding the name of the technique he had developed. Siegbahn had named it “electron spectroscopy for chemical analysis” (…
View article: HEP High Power Targetry Roadmap -- Workshop Report
HEP High Power Targetry Roadmap -- Workshop Report Open
Designing a reliable target is already a challenge for MW-class facilities today and has led several major accelerator facilities to operate at lower than design power due to target concerns. With present plans to increase beam power for n…
View article: Actinide 5f Occupations: The Case of PuO2
Actinide 5f Occupations: The Case of PuO2 Open
In actinide chemistry, the formal number of open‐shell 5f electrons, n(open), is a well‐defined quantity with an integer value. The effective 5f occupation, n(f), additionally takes donation and back‐donation into account, generally has a …
View article: New method for collecting XPS and other spectra: A thought (Gedanken) experiment
New method for collecting XPS and other spectra: A thought (Gedanken) experiment Open
We suggest a new approach for collecting data, with accompanying statistical analysis, that could be useful for assessing sample damage in X-ray Photoelectron Spectroscopy (XPS) and for target detection in XPS imagining. It is based on the…
View article: Insufficient reporting of x-ray photoelectron spectroscopy instrumental and peak fitting parameters (metadata) in the scientific literature
Insufficient reporting of x-ray photoelectron spectroscopy instrumental and peak fitting parameters (metadata) in the scientific literature Open
This study was motivated by earlier observations. It is a systematic examination of the adequacy of reporting of information (metadata) necessary to understand x-ray photoelectron spectroscopy (XPS) data collection and data analysis in the…
View article: Perspective on improving the quality of surface and material data analysis in the scientific literature with a focus on x-ray photoelectron spectroscopy (XPS)
Perspective on improving the quality of surface and material data analysis in the scientific literature with a focus on x-ray photoelectron spectroscopy (XPS) Open
Due to significant advances in instrumentation, many previously specialized techniques have become “routine” in user facilities. However, detailed knowledge held by experts has often not been relayed to general users, so they often rely on…
View article: Letter of Intent: Muonium R&D/Physics Program at the MTA
Letter of Intent: Muonium R&D/Physics Program at the MTA Open
With the planned turn-on of the PIP-II 800 MeV superconducting proton linac, Fermilab will potentially become the world's best laboratory at which to carry out fundamental muon measurements, sensitive searches for symmetry violation, and p…
View article: Automated Materials Spectroscopy Analysis using Genetic Algorithms
Automated Materials Spectroscopy Analysis using Genetic Algorithms Open
We introduce a Genetic Algorithm (GA) based, open-source project to solve multi-objective optimization problems of materials characterization data analysis including EXAFS, XPS and nanoindentation. The modular design and multiple crossover…
View article: Role of Fe Doping on Local Structure and Electrical and Magnetic Properties of PbTiO<sub>3</sub>
Role of Fe Doping on Local Structure and Electrical and Magnetic Properties of PbTiO<sub>3</sub> Open
In this work, the local structure and multiferroic properties of iron-doped lead titanate (PbTi1-xFexO3-δ) samples was investigated over the entire composition range (x = 0-1). Inherent polarization in PbTiO3 decreases due to Fe3+ incorpor…
View article: Practical guide for curve fitting in x-ray photoelectron spectroscopy
Practical guide for curve fitting in x-ray photoelectron spectroscopy Open
The use of peak fitting to extract information from x-ray photoelectron spectroscopy (XPS) data is of growing use and importance. Due to increased instrument accessibility and reliability, the use of XPS instrumentation has significantly i…
View article: Proliferation of Faulty Materials Data Analysis in the Literature
Proliferation of Faulty Materials Data Analysis in the Literature Open
As a group of subject matter experts in X-ray photoelectron spectroscopy (XPS), we write this letter to raise awareness of the epidemic of poor and incorrect materials data analysis in the Literature. This is a chronic and growing problem …
View article: Structure, Chemistry, and Charge Transfer Resistance of the Interface between Li<sub>7</sub>La<sub>3</sub>Zr<sub>2</sub>O<sub>12</sub> Electrolyte and LiCoO<sub>2</sub> Cathode
Structure, Chemistry, and Charge Transfer Resistance of the Interface between Li<sub>7</sub>La<sub>3</sub>Zr<sub>2</sub>O<sub>12</sub> Electrolyte and LiCoO<sub>2</sub> Cathode Open
All-solid-state batteries promise significant safety and energy density advantages over liquid-electrolyte batteries. The interface between the cathode and the solid electrolyte is an important contributor to charge transfer resistance. St…
View article: Report on the Synchrotron Characterization of U-Mo and U-Zr Alloys and the Modeling Results
Report on the Synchrotron Characterization of U-Mo and U-Zr Alloys and the Modeling Results Open
Uranium-molybdenum (U-Mo) and uranium-zirconium (U-Zr) are two promising fuel candidates for nuclear transmutation reactors which burn long-lived minor actinides and fission products within fast spectrum reactors. The objectives of this re…
View article: Progress Towards a Muonium Gravity Experiment
Progress Towards a Muonium Gravity Experiment Open
The gravitational acceleration of antimatter, $\bar g$, has yet to be directly measured but could change our understanding of gravity, the Universe, and the possibility of a fifth force. Three avenues are apparent for such a measurement: a…
View article: New Data Analysis Tools for X-ray Photoelectron Spectroscopy (XPS) and Spectroscopic Ellipsometry (SE): Uniqueness Plots and Width Functions in XPS, and Distance, Principal Component, and Cluster Analyses in SE
New Data Analysis Tools for X-ray Photoelectron Spectroscopy (XPS) and Spectroscopic Ellipsometry (SE): Uniqueness Plots and Width Functions in XPS, and Distance, Principal Component, and Cluster Analyses in SE Open
Journal Article New Data Analysis Tools for X-ray Photoelectron Spectroscopy (XPS) and Spectroscopic Ellipsometry (SE): Uniqueness Plots and Width Functions in XPS, and Distance, Principal Component, and Cluster Analyses in SE Get access M…
View article: Pulsed laser deposition of single layer, hexagonal boron nitride (white graphene, h-BN) on fiber-oriented Ag(111)/SrTiO3(001)
Pulsed laser deposition of single layer, hexagonal boron nitride (white graphene, h-BN) on fiber-oriented Ag(111)/SrTiO3(001) Open
We report on the growth of 1–10 ML films of hexagonal boron nitride (h-BN), also known as white graphene, on fiber-oriented Ag buffer films on SrTiO3(001) by pulsed laser deposition. The Ag buffer films of 40 nm thickness were used as subs…