Looking up Atomic Transition Energies

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Discussion Overview

The discussion revolves around finding atomic transition energy values for strontium isotopes, specifically the 1S0-1P1 transition in Sr-88 and Sr-86. Participants explore resources for locating this data, including tables and articles, and share their experiences and suggestions.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Niles seeks the energy difference for the 1S0-1P1 transition in Sr-88 and Sr-86 and expresses difficulty in finding this information on the NIST website.
  • One participant suggests that the NIST site may not contain the needed data and points to a specific article that does not provide the desired transition value for Sr-86.
  • Niles mentions finding a thesis with a figure that includes relevant values but is unsure how the author derived them.
  • Another participant humorously suggests contacting the thesis author or their supervisor for clarification, sharing a personal anecdote about receiving a job offer from such outreach.
  • Niles indicates he has reached out to the author, expressing skepticism about receiving a job offer.
  • Another participant notes that atomic transition data typically reflects results from samples containing all naturally occurring isotopes of strontium, providing isotopic abundances for context.
  • A reference to a paper discussing molecular spectroscopic evidence for strontium isotopes is shared as a potential resource.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the availability of the specific transition energy data, and multiple suggestions and resources are presented without resolution on the best approach to find the information.

Contextual Notes

Limitations include potential gaps in the resources discussed, such as the NIST database not containing the specific transition values sought, and uncertainty about the methods used in the referenced thesis.

Niles
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Hi

I am looking at strontium, and I wish to find the difference in energy between the 1S0-1P1 transition (~ 461nm) in Sr-88 and Sr-86. I don't need to calculate it, I need to look it up in a table. I thought that NIST would be helpful (http://physics.nist.gov/PhysRefData/ASD/lines_form.html), but I didn't get anything useful from there. Most likely it is because I don't know how to use it properly.

When I type in Sr, I get all the ions (Sr I, Sr II, ...). How do I know which one Sr-88 and Sr-86 is?

Best wishes,
Niles.
 
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I don't think that site has the data you need. However, when you click on the
bibliography links they supply above the table, you are led to this article:

http://jpcrd.aip.org/resource/1/jpcrbu/v39/i3/p033103_s1

which is fairly recent (2010) but does not give a value for Sr86 1p1 --> 1s0, only 3p1 --> 1s0.

I'm afraid you are out of luck.
 
Last edited by a moderator:
Write him or his supervisor? Worst that can happes is the don't answer. Best is they offer you a job :-) (happened to me, no joke)
 
I tried writing him, let's see what happens. He must be very desperate if he offers me a job.
 
lol, it did not happen after the first e-mail... But good luck, anyways

BTW, my job offer was for doing a PhD, nothing more.
 
If one looks for 'atomic' (electron) transition data, then unless specified, one would like get results from a sample with all naturally occurring isotopes.

Sr-84(0.0056), Sr-86 (0.0986), Sr-87 (0.070) and Sr-88 (0.8258)

Perhaps this might lead to something
Molecular Spectroscopic Evidence of the Existence of Strontium Isotopes Sr88, Sr87 and Sr86
http://adsabs.harvard.edu/abs/1948PhRv...74...74A
 
Last edited:

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