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Reference spectrum lines (neon)

LSRFAQ

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Make Sticky please.

A common neon lamp from a hardware store or "Radio Shack" in the US, will get you the following ionic lines:

l nm Color
540.1 green
585.2 yellow
588.2 yellow
603.0 orange
607.4 orange
616.4 orange
621.7 red-orange
626.6 red-orange
633.4 red
638.3 red
640.2 red
650.6 red
659.9 red
692.9 red
703.2 red


It goes without saying that you must insulate the 110V or 250V ac leads when running the lamp. Some bare lamps will need a ballast resistor or they will destroy themselves in a flash. It is safest to buy a already enclosed panel mount lamp with a clear filter and limiting resistor. Searching for "Neon Spectral Reference Lamp" or "Neon Spectrm Reference Lines" will get you tables of the wavelengths to 5 or so digits after the decimal point.

Less then four Dollars of parts gets you a decent calibration source with known, narrow lines.

The bright Yellow line in the attached, slightly fuzzy, picture is 585 yellow.

Steve
 

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Cyparagon

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I've gathered the ones Steve missed and labeled them the best I could:



Note: Use the log scale. This makes it easier.
 
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