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13 Current news about the topic laser spectroscopy

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When ions rattle their cage

How the investigation of ion oscillations can lead to better batteries

07-Apr-2020

Electrolytes play a key role in many areas: They are crucial for the storage of energy in our body as well as in batteries. In order to release energy, ions - charged atoms - must move in a liquid such as water. Until now the precise mechanism by which they move through the atoms and molecules of ...

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Researchers observe ultrafast processes of single molecules in liquid helium for the first time

How a molecule moves in the protective environment of a quantum fluid

24-Mar-2020

Markus Koch, head of the research group Femtosecond Dynamics at the Institute of Experimental Physics at TU Graz, and his team develop new methods for time-resolved femtosecond laser spectroscopy to investigate ultrafast processes in molecular systems. In 2018 the group demonstrated for the first ...

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First field measurements of laughing gas isotopes

Greenhouse gas emissions from soil

09-Dec-2019

Thanks to a newly developed laser spectrometer, Empa researchers can for the first time show which processes in grassland lead to nitrous oxide emissions. The aim is to reduce emissions of this potent greenhouse gas by gaining a better understanding of the processes taking place in the soil. ...

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New Measurement Device: Carbon Dioxide As Geothermometer

Researchers quantify rare CO2 variants using laser spectroscopy

22-May-2019

For the first time it is possible to measure, simultaneously and with extreme precision, four rare molecular variants of carbon dioxide (CO2) using a novel laser instrument. It is thus able to measure the temperature during the formation of CO2-binding carbonates and carbonaceous fossils ...

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Examining puzzling sizes of extremely light calcium isotopes

13-Feb-2019

Michigan State University researchers have measured for the first time the nuclei of three proton-rich calcium isotopes. One of the most fundamental properties of the nucleus is its size. The nuclear radius generally increases with the number of proton and neutron constituents. However, when ...

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Nobel Prize for Physics 2018 announced

Appreciation of the research in laser physics

02-Oct-2018

The researchersArthur Ashkin and Gérard Mourou and Donna Strickland were announced today as this year's winners of the Nobel Prize for Physics. Their achievements in the field of laser physics was groundbreaking and worthy of the Nobel Prize Committee's appreciation. The discovery of optical ...

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The world's shortest laser pulse

Observe the movement of electrons during chemical reactions in slow motion

02-Nov-2017

ETH researchers succeeded in shortening the pulse duration of an X‑ray laser to only 43 attoseconds. With a time resolution in the range of a few quintillionths of a second, they are now able for the first time to observe the movement of electrons during chemical reactions in slow motion. In ...

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A sea of spinning electrons

04-Oct-2017

Picture two schools of fish swimming in clockwise and counterclockwise circles. It's enough to make your head spin, and now scientists at Rutgers University-New Brunswick and the University of Florida have discovered the "chiral spin mode" - a sea of electrons spinning in opposing circles. "We ...

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How solvent molecules cooperate in reactions

10-Oct-2016

Molecules from the solvent environment that at first glance seem to be uninvolved can be essential for chemical reactions. This has been shown by researchers studying the formation of an ether in pure solvents and in their mixtures. They explained the underlying mechanisms in detail using ...

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Chemists characterize a chemical state thought to be unobservable

Researchers determine the energy and map the structure of a chemical reaction’s transition state

14-Dec-2015

For the first time, MIT chemists have measured the energy of the transition state of a chemical reaction — a fleeting, unstable state that is a reaction’s point of no return. Chemists have long believed it impossible to experimentally characterize transition states, but the MIT team achieved it ...

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