Results 121 to 130 of about 44,632 (309)

Isotope shifts and hyperfine structure of the Fe I 372 nm resonance line

open access: yes, 2009
We report measurements of the isotope shifts of the $3d^64s^2 a ^5D_4 - 3d^64s4p z ^5F_5^o$ Fe I resonance line at 372 nm between all four stable isotopes $^{54}$Fe, $^{56}$Fe, $^{57}$Fe, and $^{58}$Fe, as well as the complete hyperfine structure of that
H. M. Crosswhite   +8 more
core   +1 more source

hollow-cathode lamp

open access: yes
Citation: 'hollow-cathode lamp' in the IUPAC Compendium of Chemical Terminology, 5th ed.; International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.08486 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms ...
openaire   +1 more source

Machine Learning Interatomic Potentials for Energy Materials: Architectures, Training Strategies, and Applications

open access: yesAdvanced Energy Materials, EarlyView.
Machine learning interatomic potentials bridge quantum accuracy and computational efficiency for materials discovery. Architectures from Gaussian process regression to equivariant graph neural networks, training strategies including active learning and foundation models, and applications in solid‐state electrolytes, batteries, electrocatalysts ...
In Kee Park   +19 more
wiley   +1 more source

In Situ Evolution of Artificial Interphase Enabling Stable, High‐Performance Lithium Metal Batteries

open access: yesAdvanced Energy Materials, EarlyView.
An evolutionary artificial interphase is presented for stable lithium metal batteries. A Mg3N2‐based layer spontaneously evolves into a hybrid interphase enriched with superionic Li3N and lithiophilic Mg‐Li alloy during cycling. This dynamic, self‐reinforcing mechanism effectively suppresses dendrite growth and enables exceptional long‐term cycling ...
Sangcheol Lee   +4 more
wiley   +1 more source

Modular Electronic Microrobots With Onboard Sensor‐Program‐Steered Locomotion

open access: yesAdvanced Intelligent Systems, EarlyView.
Modular electronic smartlet microrobots integrate ambient‐light energy harvesting, photodetection, programmable CMOS control, and bubble‐based actuation within a sub‐millimeter fold‐up architecture. A 58‐bit on‐board CMOS chiplet enables sensor–program steered switching between independently addressable actuators, achieving closed‐loop 2D navigation in
Vineeth K. Bandari   +6 more
wiley   +1 more source

Improvements on the Stability and Operation of a Magnetron H- Ion Source

open access: yes, 2017
The magnetron H- ion sources developed in the 1970s currently in operation at Fermilab provide beam to the rest of the accelerator complex. A series of modifications to these sources have been tested in a dedicated offline test stand with the aim of ...
Bollinger, D. S.   +3 more
core   +2 more sources

Linking Synthetic Materials Chemistry to Electrocatalytic Performance

open access: yesAngewandte Chemie International Edition, EarlyView.
Synthetic materials chemistry governs electrocatalyst performance through precise control of phase, composition, defects, and morphology, while emerging operando techniques, data‐driven approaches, and automated laboratories are advancing the field toward predictive catalyst design for sustainable energy conversion.
Debabrata Bagchi   +3 more
wiley   +1 more source

Active spacecraft potential control system selection for the Jupiter orbiter with probe mission [PDF]

open access: yes, 1977
It is shown that the high flux of energetic plasma electrons and the reduced photoemission rate in the Jovian environment can result in the spacecraft developing a large negative potential.
Beattie, J. R., Goldstein, R.
core   +1 more source

Accurate transition rates for the 5p - 5s transitions in Kr I

open access: yes, 2000
Branching fractions were measured for electric dipole transitions from the 5p upper levels to the 5s levels in neutral krypton atoms. The measurements were made with a wall-stabilized electric arc and a 2m monochromator for the spectral lines in the ...
Dzierzega, Krzysztof   +3 more
core   +1 more source

Multiple anode arc lamp system [PDF]

open access: yes, 1972
A high-intensity xenon arc lamp having a plurality of separate anodes axially disposed in a symmetrical pattern which spaced a discharge gap from a common cathode is ...
Bartera, R. E., Miller, C. G.
core   +1 more source

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