The Brazilian time and frequency atomic standards program
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| Format: | Artículo científico |
| Sprache: | en |
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Academia Brasileira de Ciências
2008
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| _version_ | 1876457825506426880 |
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| author | Mushtaq Ahmed |
| author_facet | Mushtaq Ahmed |
| contents | The Brazilian time and frequency atomic standards program Mushtaq Ahmed Daniel V. Magalhães Aida Bebeachibuli Stella T. Müller Renato F. Alves Tiago A. Ortega John Weiner Vanderlei S. Bagnato Multidisciplinaria (Ciencias Naturales y Exactas) metrology cold atoms atomic clock time and frequency Cesium atomic beam clocks have been the workhorse for many demanding applications in science and technology for the past four decades. Tests of the fundamental laws of physics and the search for minute changes in fundamental constants, the synchronization of telecommunication networks, and realization of the satellite-based global positioning system would not be possible without atomic clocks. The adoption of optical cooling and trapping techniques, has produced a major advance in atomic clock precision. Cold-atom fountain and compact cold-atom clocks have also been developed. Measurement precision of a few parts in 10(15) has been demonstrated for a cold-atom fountain clock. We present here an overview of the time and frequency metrology program based on cesium atoms under development at USP São Carlos. This activity consists of construction and characterization of atomic-beam, and several variations of cold-atom clocks. We discuss the basic working principles, construction, evaluation, and important applications of atomic clocks in the Brazilian program. 2008 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32713458002 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.2 Vol.80 |
| format | Artículo científico |
| id | redalyc_32713458002 |
| institution | Redalyc |
| language | en |
| publishDate | 2008 |
| publisher | Academia Brasileira de Ciências |
| spellingShingle | The Brazilian time and frequency atomic standards program Mushtaq Ahmed Multidisciplinaria (Ciencias Naturales y Exactas) metrology cold atoms atomic clock time and frequency The Brazilian time and frequency atomic standards program Mushtaq Ahmed Daniel V. Magalhães Aida Bebeachibuli Stella T. Müller Renato F. Alves Tiago A. Ortega John Weiner Vanderlei S. Bagnato Multidisciplinaria (Ciencias Naturales y Exactas) metrology cold atoms atomic clock time and frequency Cesium atomic beam clocks have been the workhorse for many demanding applications in science and technology for the past four decades. Tests of the fundamental laws of physics and the search for minute changes in fundamental constants, the synchronization of telecommunication networks, and realization of the satellite-based global positioning system would not be possible without atomic clocks. The adoption of optical cooling and trapping techniques, has produced a major advance in atomic clock precision. Cold-atom fountain and compact cold-atom clocks have also been developed. Measurement precision of a few parts in 10(15) has been demonstrated for a cold-atom fountain clock. We present here an overview of the time and frequency metrology program based on cesium atoms under development at USP São Carlos. This activity consists of construction and characterization of atomic-beam, and several variations of cold-atom clocks. We discuss the basic working principles, construction, evaluation, and important applications of atomic clocks in the Brazilian program. 2008 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32713458002 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.2 Vol.80 |
| title | The Brazilian time and frequency atomic standards program |
| topic | Multidisciplinaria (Ciencias Naturales y Exactas) metrology cold atoms atomic clock time and frequency |
| url | https://www.redalyc.org/articulo.oa?id=32713458002 |