<p><strong>Assuming your question is a reference request:</strong></p>

<p>I now about one resource that has a very broad range of spectral data, the</p>

<p><a href="http://physics.nist.gov/PhysRefData/ASD/lines_form.html" rel="nofollow">NIST Atomic Spectra Database Lines Form</a></p>

<p>This has worked great for me.</p>

<p><a href="http://www.lib.utexas.edu/chem/info/spectra.html" rel="nofollow">This page</a> lists a couple of different alternatives. For the near IR case you are interested in, several collections are listed <a href="https://sites.google.com/site/anthonycrastospectroscopy/ir-spectral-data" rel="nofollow">here</a>.</p>

CC BY-SA 3.0
2016-02-15T19:43:51.730Z
even though it doesn't fit into your desired spectral range, I can also recommend the CDMS (cologne database for molecular spectroscopy) http://www.astro.uni-koeln.de/cdms/entries . As the name already says, it's rather useful for frequencies in the gigahertz regime
rtime
CC BY-SA 3.0
2016-02-15T19:59:16.153Z
This may be the best answer: *Given a compound* I can now find the extended spectrum, but *given a spectral range* I'm not able to find a way to get a list of elements or compounds with relatively strong lines in that range.  But don't assume my physics is that strong: Is that question readily transformed into terms that will work with one of those data sources?
feetwet
CC BY-SA 3.0
2016-02-15T09:01:39.070Z
2016-02-15T12:32:54.270Z
2016-02-15T12:32:54.270Z
SE - stop firing the good guys
<p>Both potassium (766.5+769.9 nm) and sodium (818.3+819.4 nm) have strong resonance lines (doublets) in this part of the spectrum. There are also the calcium triplet lines at 849.8+854.2+866.2 nm.</p>

<p>These are the strongest atomic absorption lines seen in the spectra of solar-type stars or cooler at 700-900 nm.</p>

<p>A more specific answer would require the spectral type of the star.</p>

<p>To do something more general and/or extensive you would need to get hold of a good line list (a line list alone cannot easily tell you which lines will appear strongest in a stellar spectrum) and a spectral synthesis programme like SME or MOOG.</p>

CC BY-SA 3.0
2016-02-16T08:33:08.210Z
2016-02-16T08:33:08.210Z
ProfRob
<p>I'm looking for some reference listing spectral lines outside the visible spectrum.  (In particular, I'm looking for an element or compound that emits strongly in the 700-900nm range.)</p>

<spectra><infrared><resource-request>
Reference for broader spectral lines?
feetwet
# Reference for broader spectral lines?

(Asked by: username_0 on 2016-02-15)

I'm looking for some reference listing spectral lines outside the visible spectrum. (In particular, I'm looking for an element or compound that emits strongly in the 700-900nm range.)

**Tags:** spectra, infrared, resource-request

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## 2 answers

### Answer by username_1 on 2016-02-15. Score: 3 | Accepted answer

**Assuming your question is a reference request:**

I now about one resource that has a very broad range of spectral data, the

[NIST Atomic Spectra Database Lines Form](http://physics.nist.gov/PhysRefData/ASD/lines_form.html)

This has worked great for me.

[This page](http://www.lib.utexas.edu/chem/info/spectra.html) lists a couple of different alternatives. For the near IR case you are interested in, several collections are listed [here](https://sites.google.com/site/anthonycrastospectroscopy/ir-spectral-data).

> **Comments:**
> **username_2**: even though it doesn't fit into your desired spectral range, I can also recommend the CDMS (cologne database for molecular spectroscopy) http://www.astro.uni-koeln.de/cdms/entries . As the name already says, it's rather useful for frequencies in the gigahertz regime  
> **username_0**: This may be the best answer: *Given a compound* I can now find the extended spectrum, but *given a spectral range* I'm not able to find a way to get a list of elements or compounds with relatively strong lines in that range.  But don't assume my physics is that strong: Is that question readily transformed into terms that will work with one of those data sources?  

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### Answer by username_3 on 2016-02-16. Score: 1

Both potassium (766.5+769.9 nm) and sodium (818.3+819.4 nm) have strong resonance lines (doublets) in this part of the spectrum. There are also the calcium triplet lines at 849.8+854.2+866.2 nm.

These are the strongest atomic absorption lines seen in the spectra of solar-type stars or cooler at 700-900 nm.

A more specific answer would require the spectral type of the star.

To do something more general and/or extensive you would need to get hold of a good line list (a line list alone cannot easily tell you which lines will appear strongest in a stellar spectrum) and a spectral synthesis programme like SME or MOOG.


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