New findings about ions around comets

Sofia Bergman, Swedish Institute of Space Physics (IRF) and Umeå University, will defend her doctoral thesis on low-energy ions around comet 67P/Churyumov-Gerasimenko on 26 November. Observing low energy ions is notoriously ...

How positively and negatively charged ions behave at interfaces

How positively and negatively charged ions behave at the interface between a solid surface and an aqueous solution has been investigated by researchers from the Cluster of Excellence RESOLV at the Ruhr-Universität Bochum, ...

Iodine successfully tested in satellite ion thrusters

A team of researchers from ThrustMe, working with colleagues from Sorbonne Université, has successfully tested the use of iodine as an ionizing agent in an ion-thrusting spacecraft engine. In their paper published in the ...

Artificial smelling to control food quality

A team led by Santiago Marco, professor at the Department of Electronic Engineering of the UB and member of IBEC, has optimized the use of a technique that analyzes, at a molecular level, the present substances in the aroma ...

Visualizing the microscopic world of fast ions in fusion devices

The U.S. scientific community is currently conceptualizing the first nuclear fusion power plants, which will revolutionize energy production. Like the sun and stars, a fusion power plant will produce energy by fusing light ...

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Ion

An ion is an atom or molecule in which the total number of electrons is not equal to the total number of protons, giving it a net positive or negative electrical charge. The name was given by physicist Michael Faraday for the substances that allow a current to pass ("go") between electrodes in a solution, when an electric field is applied. It is from Greek ιον, meaning "going".

An ion consisting of a single atom is an atomic or monatomic ion; if it consists of two or more atoms, it is a molecular or polyatomic ion.

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