Erratum: Spatially-selective in situ magnetometry of ultracold atomic clouds (2019 J. Phys. B: At. Mol. Opt. 52 075003)

2019 ◽  
Vol 52 (21) ◽  
pp. 219601
Author(s):  
Ottó Elíasson ◽  
Robert Heck ◽  
Jens S Laustsen ◽  
Mario Napolitano ◽  
Romain Müller ◽  
...  
Keyword(s):  
In Situ Magnetometry

scholarly journals Fourier analysis of Ramsey fringes observed in a continuous atomic fountain for in situ magnetometry

2011 ◽  
Vol 56 (1) ◽  
pp. 11001 ◽  
Author(s):  
G. Di Domenico ◽  
L. Devenoges ◽  
A. Stefanov ◽  
A. Joyet ◽  
P. Thomann
Keyword(s):  
Fourier Analysis ◽  
Atomic Fountain ◽  
In Situ Magnetometry

scholarly journals Spatially-selective in situ magnetometry of ultracold atomic clouds

2019 ◽  
Vol 52 (7) ◽  
pp. 075003
Author(s):  
Ottó Elíasson ◽  
Robert Heck ◽  
Jens S Laustsen ◽  
Mario Napolitano ◽  
Romain Müller ◽  
...  
Keyword(s):  
In Situ Magnetometry

scholarly journals In situ magnetometry for experiments with atomic quantum gases

2018 ◽  
Vol 89 (1) ◽  
pp. 013108 ◽  
Author(s):  
Ludwig Krinner ◽  
Michael Stewart ◽  
Arturo Pazmiño ◽  
Dominik Schneble
Keyword(s):  
Quantum Gases ◽  
Atomic Quantum Gases ◽  
In Situ Magnetometry

scholarly journals Hydrothermal Sintering and Oxidation of an Alumina-Supported Nickel Methanation Catalyst Studied Using In Situ Magnetometry

Catalysts ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 636
Author(s):  
Malebelo Maphutha ◽  
Dominic de Oliveira ◽  
Thulani M. Nyathi ◽  
Mohamed I. Fadlalla ◽  
Robert Henkel ◽  
...  
Keyword(s):  
Elevated Temperatures ◽  
Pressure Ratio ◽  
Particle Growth ◽  
Bimodal Distribution ◽  
Ex Situ ◽  
Hydrothermal Conditions ◽  
Co Conversion ◽  
Average Size ◽  
In Situ Magnetometry

The presented study investigated the effects of temperature (350–650 °C) and gas environment (pure Ar versus a H2O/H2 partial pressure ratio (PH2O/PH2) of 5) on the extent of sintering and oxidation of Al2O3-supported Ni0 nanoparticles (≈4 nm). We note that a PH2O/PH2 of 5 corresponds to a simulated CO conversion of 94% during methanation. Sintering and oxidation were studied using in situ magnetometry, while ex situ TEM analyses confirmed the particle sizes before and after the magnetometry-based experiments. It was found that increasing the temperature from 350 to 650 °C in Ar at atmospheric pressure causes a negligible change to the average size and degree of reduction (DOR) of the starting Ni0 nanoparticles. However, studying the same temperature window under hydrothermal conditions at 10 bar causes significant particle growth (≈9 nm) and the development of a bimodal distribution. Furthermore, the presence of steam decreases the DOR of Ni0 from 86.2% after initial activation to 22.2% due to oxidation. In summary, this study reports on the expected sintering and oxidation of Ni-based catalysts under high CO conversion conditions at elevated temperatures during methanation. Importantly, we were able to demonstrate how magnetometry-based analyses can provide similar size information (and changes thereof) as those observed with TEM but with the added advantage that this information can be obtained in situ.

Extra storage capacity in transition metal oxide lithium-ion batteries revealed by in situ magnetometry

2020 ◽  
Vol 20 (1) ◽  
pp. 76-83 ◽  
Author(s):  
Qiang Li ◽  
Hongsen Li ◽  
Qingtao Xia ◽  
Zhengqiang Hu ◽  
Yue Zhu ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Oxide ◽  
Lithium Ion Batteries ◽  
Storage Capacity ◽  
Lithium Ion ◽  
Transition Metal Oxide ◽  
In Situ Magnetometry

Revealing the multiple cathodic and anodic involved charge storage mechanism in a FeSe2 cathode for aluminium-ion batteries by in situ magnetometry

2021 ◽  
Author(s):  
Huaizhi Wang ◽  
Linyi Zhao ◽  
Hao Zhang ◽  
Yongshuai Liu ◽  
Li Yang ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Low Cost ◽  
Lithium Ion ◽  
High Energy ◽  
Charge Storage ◽  
Storage Mechanism ◽  
Aluminium Ion ◽  
Charge Storage Mechanism ◽  
In Situ Magnetometry

Rechargeable aluminium-ion batteries (AIBs) are considered to be promising alternatives for current lithium-ion batteries (LIBs), since they can offer the possibilities of low cost with high energy-to-price ratios. Unlike in...

Rendez vous with Saturn's rings

1984 ◽  
Vol 75 ◽  
pp. 743-759 ◽  
Author(s):  
Kerry T. Nock
Keyword(s):  
Solar Energy ◽  
Electric Propulsion ◽  
Power Source ◽  
Propulsion System ◽  
Low Thrust ◽  
Ring Plane ◽  
The Earth ◽  
Total Impulse ◽  
Saturn's Rings

ABSTRACTA mission to rendezvous with the rings of Saturn is studied with regard to science rationale and instrumentation and engineering feasibility and design. Future detailedin situexploration of the rings of Saturn will require spacecraft systems with enormous propulsive capability. NASA is currently studying the critical technologies for just such a system, called Nuclear Electric Propulsion (NEP). Electric propulsion is the only technology which can effectively provide the required total impulse for this demanding mission. Furthermore, the power source must be nuclear because the solar energy reaching Saturn is only 1% of that at the Earth. An important aspect of this mission is the ability of the low thrust propulsion system to continuously boost the spacecraft above the ring plane as it spirals in toward Saturn, thus enabling scientific measurements of ring particles from only a few kilometers.

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