Published January 1, 2010 | Version v1
Journal article Open

Final report for the period 2007-2009 on the CCL-K11 ongoing key comparison

  • 1. BEV, A-1160 Vienna, Austria
  • 2. MIKES, Espoo 02151, Finland
  • 3. INMS NRC, Ottawa, ON K1A 0R6, Canada
  • 4. GUM, PL-00139 Warsaw, Poland
  • 5. MIRS, Maribor 2000, Slovenia
  • 6. CENAM, Queretaro 76241, Mexico
  • 7. INTI, Buenos Aires, DF, Argentina
  • 8. INMETRO, Rio De Janeiro, Brazil
  • 9. UME, TR-41470 Tubitak Gebzeyerleskesi, Turkey
  • 10. DCM LFSB, Zagreb 10000, Croatia
  • 11. BIPM, F-92312 Sevres, France

Description

Lasers from nine national metrological institutes (NMIs) were compared as part of the CCL-K11 ongoing key comparison, initiated by the 13(th) meeting of the Comit, Consultative des Longeurs (CCL) in 2007. The absolute frequency of the f component of the R(127) 11-5 transition of molecular iodine was measured for these lasers following the technical protocol for CCL-K11. The results of these measurements are compiled in the present report. The comparison reports, as communicated by each participant, are included as appendices.

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