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Taps and Users of NIST's Atomic Spectra Database
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The online Atomic Spectra Database (ASD) provides the most authoritative information about atomic spectra available anywhere, and it is used by researchers worldwide.
Key facts
- For users arriving from ISPs, 60% were likely from academics or industry, 31% from the military, and 8% from astrophysics
- Fully 47% of all their requests are for the region from 2 to 10 micrometers, and yet that range makes up only 5% of the stored lines in the ASD. [ See chart, above left.] That's a severe deficiency
- During the study period, 306,488 queries, about 1,200 per day, were entered into ASD's online request form and logged in the tracking system
- Previously," says Yuri Ralchenko of the Quantum Measurement Division's Atomic Spectroscopy Group, which maintains the ASD, "They had only general usage data showing the number of users per month
Summary
Those questions are now being answered in detail by a new software tracking system, installed in November 2011, which records user request parameters such as element and wavelength, as well as IP address information. "Previously," says Yuri Ralchenko of the Quantum Measurement Division's Atomic Spectroscopy Group, which maintains the ASD, "we had only general usage data showing the number of users per month steadily growing. By October of this year, we had accumulated enough statistics for an initial in-depth analysis. At this stage, says the spectroscopy group's Alexander (Sasha) Kramida, who authored the analysis, "only about half of their users can be identified fully. During the study period, 306,488 queries, about 1,200 per day, were entered into ASD's online request form and logged in the tracking system.