| Zugriffsnummer | 21207 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Prospects of operating a caesium fountain clock at zero collisional frequency shift |
| Autor(in); Institution |
Szymaniec, K.; National Physical Laboratory, Teddington, UK
Chalupczak, W.; National Physical Laboratory, Teddington, UK
Weyers, Stefan; 4.4, Zeit und Frequenz, PTB-Braunschweig
Wynands, Robert; 4.4, Zeit und Frequenz, PTB-Braunschweig
|
| Quelle/Jahr | Applied Physics B: 89 (2007), 2/3, 187 - 193 |
| ISSN | 0946-2171 (PRINT) ; 1432-0649 (ONLINE) |
| DOI | |
| Verlag | Berlin [u.a.]: Springer |
| Klassifikationscode | PACS: 32.80.Pj ; PACS: 06.20.-f |
| Freie Schlagworte | Caesium fountain primary frequency standard ; Cold-collision frequency shift ; Accuracy |
| Zusammenfassung | Recently it has been shown both theoretically and experimentally that, for certain operating conditions of a caesium fountain primary frequency standard, the cold-collision frequency shift, which can be a limit to the accuracy of the standard, strongly varies with the clock state composition and can be cancelled. This offers the intriguing prospect of operating a fountain standard at the zero-shift point, where no correction for collisions needs to be applied. We estimate expected improvements in the standard's accuracy and a potential shortening of the averaging time. Lastly, we derive relevant requirements for the key experimental parameters. |
