Gran Canaria


Oct 23 -- submission deadline
Oct 29 -- online database accessible (password protected)
Nov 3 -- Informal reception (place TBD)
Nov 4 -- Workshop opens
Nov 6 -- City tour and dinner
Nov 7 -- Workshop adjourns

Organizing Committee

R.J. Florido (ULPGC, Spain)
J.G. Rubiano (ULPGC, Spain)
H.A. Scott (LLNL, USA)
S.B. Hansen (SNL, USA)
C.J. Fontes (LANL, USA)
E. Stambulchik (WIS, Israel)
Yu. Ralchenko (NIST, USA)


Call for Submissions: PDF
Example of a properly formatted file (from NLTE-10): file

Supplemental files

Area map


Las Palmas is served by an international airport with non-stop connections to a number of major cities in Europe including London, Frankfurt, Vienna, Madrid, Rome and many others.

Tourism in Las Palmas and nearby

The Official Gran Canaria Tourist Website
Wikitravel: Gran Canaria
Wikitravel: Las Palmas
Las Palmas de Gran Canaria Travel

The 11th NLTE Code Comparison Workshop

November 4-7 2019, Las Palmas de Gran Canaria, Spain

Supported by:

Cabildo de Gran Canaria - Consejo Insular de la Energ√a≠



Advanced collisional-radiative (CR) models are extensively used in plasma spectroscopy to analyze plasma kinetics and spectra produced far from local thermodynamic equilibrium (LTE). Non-LTE atomic models also play a critical role in radiation-hydrodynamic simulations used to help design plasma experiments. It is therefore not surprising that verification and validation (V&V) of these complex CR models are of significant interest. Since experimental benchmarks for validation are extremely challenging, computational experiments and comparisons are one of the primary tools for V&V of CR codes. The NLTE Workshops aim at development of such tools and techniques.
Meeting Year Location Results
NLTE-1  1996  Gaithersburg, MD, USA  Lee et al, JQSRT 58, 737 (1997)
NLTE-2  2001  Virtual Workshop  Bowen et al, JQSRT 81, 71 (2003)
NLTE-3  2003  Gaithersburg, MD, USA  Bowen et al, JQSRT 99, 102 (2005)
NLTE-4  2005  Las Palmas de Gran Canaria, Spain  Rubiano et al, HEDP 3, 225 (2007)
NLTE-5  2007  Santa Fe, NM, USA  Fontes et al, HEDP 5, 15 (2009)
NLTE-6  2009  Athens, Greece  
NLTE-7  2011  Vienna, Austria  Chung et al, HEDP, 9, 645 (2013)
NLTE-8  2013  Santa Fe, NM, USA  
NLTE-9  2015  Paris, France  Piron et al, HEDP 23, 38 (2017)
NLTE-10  2017  San Diego, CA, USA  Hansen et al, HEDP to be published (2019)


Similar to the previous workshops, a necessary and sufficient condition for participation would be to submit at least one calculated case. A detailed description of the cases and format requirements can be found in the Call for Submissions. Please contact Yuri Ralchenko (yralchen at for details on file uploads.


THIS SITE WILL BE DOWN OCT 26-27 2019 due to the planned maintenance.
The requests/comments below are generally optional but following them would highly facilitate comparisons.
Oct 23:
- The Call for Submissions contains new information (marked in yellow).
- all Kr cases: assume that the plasma consists of deuterium (D) gas with Kr added at 0.01% atomic fraction. To a very good approximation, the D is completely ionized with a number density matching the specified electron density, while the Kr ion density is 1.e-4 of the D number density.
-VH case: use radii of (1.e-4, 0.01) cm instead of (0., 0.01) cm. Data in the spectrum section for these cases -- including the bonus case -- should have units J/s/cm2/eV.

Oct 22:
- KrF case: please use 10-eV resolution for instrumental broadening.
- Ge case: Matching the spectra may require accounting for an instrumental resolution of 4 eV (fwhm).
Oct 21:
- For cases which require emission and absorption spectra, the emission spectra should be labeled spectrum (or spectrum1 and spectrum2) while the absorption spectra should be labeled absorption (or absorption1 and absorption2).
- VH case: Matching the spectra will require accounting for an instrumental resolution of 10-12 eV (FWHM).
Oct 10:
- We request not one but two (GeF1 and GeF2) cases to match the two available experimental spectra.


The registration fee for the workshop will be 100 Euro to cover some food services. The details on the fee payment will be added here soon.

There will be no registration fee due to the generous contribution of the LLNL High Energy Density Science Center.

It would also be very helpful if you inform the organizers on your intention to participate in this Workshop.

Summary of cases

Element Case ID No. of cases Te (eV) Hot electrons Particle density (cm-3) Plasma radius (cm) Spectral ranges
V VW 36 2, 5, 10, 20, 50, 100 T2 = 10 keV with f2=10-3 and 10-1 of Ni Ne = Z×Ni with Ni=5×1021, 5×1022, 5×1023 (1) 20-200 eV, δε=0.2 eV (901 points)
(2) 4500-6500 eV, δε=0.5 eV (4001 points)
V VH 12+1 500, 1500, 2500 Ne = Z×Ni with Ni=2×1019, 5×1021 0, 0.01 4500-6500 eV, δε=0.5 eV (4001 points)
V VTD 1 See case description Ne(t) = Z(t)×Ni(t), see case description for Ni(t) (1) 20-1500 eV, δε=0.5 eV (2961 points)
(2) 4500-6500 eV, δε=0.5 eV (4001 points)
Ge Ge 9+1 1000, 2000, 3000 Ne = 1020, 1021, 1022 1200-1900 eV, δε=0.25 eV (2801 points)
Kr Kr 9+2 1000, 3000, 5000 Ne = 1023, 1024, 1025 (1) 12600-13600 eV, δε=0.5 eV (2001 points)
(2) 14800-15600 eV, δε=0.5 eV (1601 points)

Location, accommodation, etc.

The meeting will be held at the Hotel Fataga. The rooms can already be booked using a promo code ULPGC. You will get a 12% discount when booking online only at the hotel website and for stays between November 3 and November 10. The final room rate is expected to be about 100 € (including breakfast). These reduced rates (and the code) will be on until September 30, but will depend on availability.
We plan an informal reception on the night of Sun Nov 3 and a dinner on Wed Nov 6.

Computer Equipment

We will have an Internet connection at the meeting room and (probably) a dedicated wireless network for the Workshop purposes.

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