A clock network for geodesy and fundamental science

Autor: C. Lisdat, G. Grosche, N. Quintin, C. Shi, S.M.F. Raupach, C. Grebing, D. Nicolodi, F. Stefani, A. Al-Masoudi, S. Dörscher, S. Häfner, J.-L. Robyr, N. Chiodo, S. Bilicki, E. Bookjans, A. Koczwara, S. Koke, A. Kuhl, F. Wiotte, F. Meynadier, E. Camisard, M. Abgrall, M. Lours, T. Legero, H. Schnatz, U. Sterr, H. Denker, C. Chardonnet, Y. Le Coq, G. Santarelli, A. Amy-Klein, R. Le Targat, J. Lodewyck, O Lopez, P.-E. Pottie

Publikováno v: Nature Communications, Vol 7, Iss 1, Pp 1-7 (2016)

Comparing the frequency of two distant optical clocks will enable sensitive tests of fundamental physics. Here, the authors compare two strontium optical-lattice clocks 690 kilometres apart to a degree of accuracy that is limited only by the uncertai

Externí odkaz: https://doaj.org/article/d6f986aa81ef4a2894c0803eca3c4585

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NEAT-FT: the European fiber link collaboration

Autor: H. Schnatz, G. Bolognini, D. Calonico, E. Dierikx, G. Grosche, P. O. Hedekvist, A. Kuna, G. Marra, M. Merimaa, A. Niessner, P. E. Pottie, ?liwczy?ski, R. Slavik, V. Smotlacha, F. Spahic

Publikováno v: European Frequency and Time Forum EFTF 2014, Neuchatel, Switzerland, 2014
info:cnr-pdr/source/autori:H. Schnatz, G. Bolognini, D. Calonico, E. Dierikx, G. Grosche, P. O. Hedekvist, A. Kuna, G. Marra, M. Merimaa, A. Niessner, P. E. Pottie, ?. ?liwczy?ski, R. Slavik, V. Smotlacha, F. Spahic/congresso_nome:European Frequency and Time Forum EFTF 2014/congresso_luogo:Neuchatel, Switzerland/congresso_data:2014/anno:2014/pagina_da:/pagina_a:/intervallo_pagine

The development of clocks based on optical transitions during the past three decades culminates in the availability of optical clocks with unprecedented stability and uncertainty . Simultaneously, increasing requirements for accurate time and frequen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::b1949127d4f1eddb58bd6b6ec82e2bdf
https://eprints.soton.ac.uk/372243/

Precision measurement of two iodine lines at 585 nm and 549 nm

Autor: H. Schnatz, R. Klein, R. Grieser, G. Bönsch, S. Dickopf, A. Nicolaus, P. Merz, G. Huber

Publikováno v: Zeitschrift f�r Physik A Hadrons and Nuclei. 348:147-150

The transition frequencies of thei-component of the R(99)15-1 and thew-component of the R(85)26-0 transition in the B-X system of molecular127I2 have been determined with an overall relative standard uncertainty of 1.3 · 10−10. For this purpose a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df1a2fdbac0093959f84732b09296e7f
https://doi.org/10.1007/bf01289603

A penning trap for studying cluster ions

Autor: Lutz Schweikhard, H. Schnatz, H.-J. Kluge

Publikováno v: PDMS and Clusters ISBN: 9783540172093

We propose to use a Penning trap for spectroscopy of stored cluster ions. A similar device has been built for the purpose of mass measurements of short-lived nuclei produced at the on-line isotope separator ISOLDE/CERN. A resolving power of 500,000 i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::866dcf32144405398f27423fbf936c2d
https://doi.org/10.1007/3-540-17209-2_34