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Light on francium
Till recently no emission spectrum of francium (an extremely rare radio-active element with atomic number 87) has been observed. Using laser spectroscopy with a swept wavelength laser source, and simultaneous observation of the signal from the atom detector, a first observation, requiring some hundr...
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| Lenguaje: | fre |
| Publicado: |
1978
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| Acceso en línea: | http://cds.cern.ch/record/879070 |