AI Article Synopsis
- The paper outlines the history of microwave rotational spectroscopy research that began in 1954 at the National Bureau of Standards, now NIST, highlighting its evolution over the decades.
- David Lide initiated this research using Stark modulated waveguide septum cells, and advancements were made by Donald R. Johnson, who used parallel plate cells to study free radicals.
- In the mid-1980s, Lovas and Suenram created a pulsed molecular beam FTMW spectrometer, focusing on hydrogen-bonded and van der Waals complexes, with applications in atmospheric chemistry and molecular radio astronomy.
Article Abstract
This paper describes the beginning and evolution of microwave rotational spectroscopic research starting in 1954 at the National Bureau of Standards (NBS), located at that time in Washington, DC, through the present at NIST in Gaithersburg, MD. David Lide was hired in 1954 to start this research employing Stark modulated waveguide septum cells. When Donald R. Johnson joined the lab in 1968, he developed parallel plate cells coupled with rf and DC discharge methods to study free radicals and transient species. In the mid 1980s Lovas and Suenram constructed a pulsed molecular beam Fourier Transform microwave (FTMW) spectrometer to study hydrogen bonded and van der Waals dimers and trimers. This article describes the types of molecules studied and the type molecular properties derived from these measurements as well as some of the instruments developed for these studies. The two major areas of application described are atmospheric chemistry and molecular radio astronomy.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4553873 | PMC |
| http://dx.doi.org/10.6028/jres.117.016 | DOI Listing |
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