Atomic trajectory characterization in a fountain clock based on the spectrum of a hyperfine transition
We describe a new method to determine the position of the atomic cloud during its interaction with the microwave field in the cavity of a fountain clock. The positional information is extracted from the spectrum of the |F = 3, mF = 0〉 to |F = 4, mF = −1〉 hyperfine transition, which shows a position-...
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| Veröffentlicht in: | Metrologia 2012-08, Vol.49 (4), p.468-478, Article 468 |
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| container_end_page | 478 |
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| container_title | Metrologia |
| container_volume | 49 |
| creator | Nemitz, N Gerginov, V Wynands, R Weyers, S |
| description | We describe a new method to determine the position of the atomic cloud during its interaction with the microwave field in the cavity of a fountain clock. The positional information is extracted from the spectrum of the |F = 3, mF = 0〉 to |F = 4, mF = −1〉 hyperfine transition, which shows a position-dependent asymmetry when the magnetic C-field is tilted by a few degrees with respect to the cavity axis. Analysis of this spectral asymmetry provides the horizontal centre-of-mass position for the ensemble of atoms contributing to frequency measurements. With an uncertainty of the order of 0.1 mm, the obtained information is useful for putting limits on the systematic uncertainty due to distributed cavity phase gradients. The validity of the new method is demonstrated through experimental evidence. |
| doi_str_mv | 10.1088/0026-1394/49/4/468 |
| format | Article |
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The validity of the new method is demonstrated through experimental evidence.</description><subject>Asymmetry</subject><subject>Atomic clocks</subject><subject>Clocks</subject><subject>Holes</subject><subject>JOA</subject><subject>JOB?</subject><subject>Magnetic fields</subject><subject>Measurement</subject><subject>Metrology</subject><subject>Microwaves</subject><subject>MST</subject><subject>PMB</subject><subject>Position measurement</subject><subject>Spectra</subject><subject>Spectrum analysis</subject><subject>Uncertainty</subject><issn>0026-1394</issn><issn>1681-7575</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNp9kEtLAzEYRYMoWKt_wFXAjZtpk5m8ZlmKLyi46T5k0oSmTidjklnUX2_GikhBN19Ccs7l4wJwi9EMIyHmCJWswFVN5qSe58HEGZhgJnDBKafnYPIDXIKrGHcIYV5SPgF2kfzeaZiC2hmdfDhAvVVB6WSC-1DJ-Q66Dipo_dAlla-69foNNiqaDcyfaWtg7LMahj30NpPbQ2-CdZ0ZQ7voxoxrcGFVG83N9zkF68eH9fK5WL0-vSwXq0JXhKfCEEIrjG29aSpkqaaCK0RVw2tMbINKomlNa1FaRg3fVArbxtTEGER5fmyqKbg_xvbBvw8mJrl3UZu2VZ3xQ5SYMYQY5qzM6N0JuvND6PJymSqZKDHlOFPlkdLBxxiMlX1wexUOEiM5Ni_HYuVYrCS1zIOJLIkTSbv0VWUuxLX_q7Oj6nz_a6G_hU887Zah</recordid><startdate>20120801</startdate><enddate>20120801</enddate><creator>Nemitz, N</creator><creator>Gerginov, V</creator><creator>Wynands, R</creator><creator>Weyers, S</creator><general>IOP Publishing</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope></search><sort><creationdate>20120801</creationdate><title>Atomic trajectory characterization in a fountain clock based on the spectrum of a hyperfine transition</title><author>Nemitz, N ; Gerginov, V ; Wynands, R ; Weyers, S</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c347t-e445311f9db30f5c587a05ab7914fb024c595982f65e7d3a1fbe94ee05782fb3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Asymmetry</topic><topic>Atomic clocks</topic><topic>Clocks</topic><topic>Holes</topic><topic>JOA</topic><topic>JOB?</topic><topic>Magnetic fields</topic><topic>Measurement</topic><topic>Metrology</topic><topic>Microwaves</topic><topic>MST</topic><topic>PMB</topic><topic>Position measurement</topic><topic>Spectra</topic><topic>Spectrum analysis</topic><topic>Uncertainty</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Nemitz, N</creatorcontrib><creatorcontrib>Gerginov, V</creatorcontrib><creatorcontrib>Wynands, R</creatorcontrib><creatorcontrib>Weyers, S</creatorcontrib><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Metrologia</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Nemitz, N</au><au>Gerginov, V</au><au>Wynands, R</au><au>Weyers, S</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Atomic trajectory characterization in a fountain clock based on the spectrum of a hyperfine transition</atitle><jtitle>Metrologia</jtitle><stitle>MET</stitle><addtitle>Metrologia</addtitle><date>2012-08-01</date><risdate>2012</risdate><volume>49</volume><issue>4</issue><spage>468</spage><epage>478</epage><pages>468-478</pages><artnum>468</artnum><issn>0026-1394</issn><eissn>1681-7575</eissn><coden>MTRGAU</coden><abstract>We describe a new method to determine the position of the atomic cloud during its interaction with the microwave field in the cavity of a fountain clock. 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| ispartof | Metrologia, 2012-08, Vol.49 (4), p.468-478, Article 468 |
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| language | eng |
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| source | IOP Publishing Journals; Institute of Physics (IOP) Journals - HEAL-Link |
| subjects | Asymmetry Atomic clocks Clocks Holes JOA JOB? Magnetic fields Measurement Metrology Microwaves MST PMB Position measurement Spectra Spectrum analysis Uncertainty |
| title | Atomic trajectory characterization in a fountain clock based on the spectrum of a hyperfine transition |
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