Einstein A coefficients for the atomic He transition are available
at NIST's online Atomic Spectra Database,
http://physics.nist.gov/PhysRefData/contents-atomic.html
The A coefficient is listed there as 5.05x10^{6} s^{-1} for
all three components of the line you named.
Best regards,
George McBane.
At 09:47 AM 6/26/00 +0200, Robert Klein-Douwel wrote:
>Guowen Ding wrote:
>
>
>>Dear Sir/Madam
>> I am a postdoc at UCLA, Can someone give me a suggestion where can
>>I find the absorption of ion N2+(X-B) and atomic metastable He(2 3S- 4
>3P)
>>at 318.77nm?
>
>For N2+ take a look at http://www.sri.com/psd/lifbase/ for Jorge Luque's
>program LIFBASE, which includes N2+. For the program, click at updates
>and/or requests. Don't know about He.
>
>Hope this helps,
>Robert
>
>------------------------------------------------
>Dr. R.J.H. Klein-Douwel [log in to unmask]
>Dept. of Applied Physics, University of Nijmegen
>P.O. Box 9010, 6500 GL Nijmegen, The Netherlands
>Phone: +31-24-3653013 Fax: +31-24-3653311
>
--
George C. McBane [log in to unmask]
Department of Chemistry phone (614) 292-4098
The Ohio State University fax (614) 292-1685
100 W. 18th Ave
Columbus, OH 43210
Promethium: atomic number 61, mp 1168 C, bp 2460 C density 7.22 g/cc
Not naturally occuring on Earth; first made at OSU. Longest lived isotope
mass 145, half-life 17.7 yr.
http://www.chemistry.ohio-state.edu/~mcbane/research.html
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