Coulomb crystals are surrounded by molecules used in the Lewandowski laboratory to study astrochemical reactions. Credit: Steven Burrows/Olivia Krohn and the Lewandowski group
From their experiments, the researchers resolved chemical dynamics in ion-neutral reactions by using precise laser cooling and mass spectrometry to control quantum states, thereby allowing them to emulate ISM chemical reactions successfully. Their work brings scientists closer to answering some of the most profound questions about the chemical development of the cosmos.
Whether using calcium or CCl+ ions, the experimental setup allowed the researchers to filter out unwanted ions using resonant excitation, leaving the desired chemical reactants behind. The team also determined the quantum-state dependence of the reaction of calcium ions with nitric oxide by fine-tuning the cooling lasers, which helped produce certain relative populations of quantum states of the trapped calcium ions.
This third arm of the ISM-chemistry experimental apparatus improved the resolution even further as the researchers now had multiple ways to determine which products were created in the ISM-type reactions and their respective masses.
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