Editing Ultraviolet (section)

===Gas-discharge lamps===
{{Main|Gas-discharge lamp}}
Specialized UV [[gas-discharge lamp]]s containing different gases produce UV radiation at particular spectral lines for scientific purposes. [[Argon]] and [[deuterium arc lamp]]s are often used as stable sources, either windowless or with various windows such as [[magnesium fluoride]].<ref>
{{cite report
 |last1=Klose    |first1=Jules Z.
 |last2=Bridges  |first2=J. Mervin
 |last3=Ott      |first3=William R.
 |date=June 1987
 |title=Radiometric standards in the V‑UV
 |series=NBS Special Publication
 |id=250–3
 |department=NBS Measurement Services
 |publisher=U.S. [[National Institute of Standards and Technology]]
 |url=https://www.nist.gov/calibrations/upload/sp250-3.pdf
 |url-status=live
 |archive-url=https://web.archive.org/web/20160611075213/http://www.nist.gov/calibrations/upload/sp250-3.pdf
 |archive-date=11 June 2016
}}
</ref> These are often the emitting sources in UV spectroscopy equipment for chemical analysis.{{cn|date=May 2024}}

Other UV sources with more continuous emission spectra include [[Xenon flash lamp|xenon arc lamps]] (commonly used as sunlight simulators), [[deuterium arc lamp]]s, [[Xenon arc lamp#Xenon-mercury|mercury-xenon arc lamps]], and [[metal-halide lamp|metal-halide arc lamp]]s.{{cn|date=May 2024}}

The [[excimer lamp]], a UV source developed in the early 2000s, is seeing increasing use in scientific fields. It has the advantages of high-intensity, high efficiency, and operation at a variety of wavelength bands into the vacuum ultraviolet.{{cn|date=May 2024}}