Spectroscopy with Laser-cooled Francium and Progress on Atomic Parity Non-conservation
| dc.contributor.advisor | Orozco, Luis A | en_US |
| dc.contributor.author | Zhang, Jiehang | en_US |
| dc.contributor.department | Physics | en_US |
| dc.contributor.publisher | Digital Repository at the University of Maryland | en_US |
| dc.contributor.publisher | University of Maryland (College Park, Md.) | en_US |
| dc.date.accessioned | 2015-09-18T05:47:38Z | |
| dc.date.available | 2015-09-18T05:47:38Z | |
| dc.date.issued | 2015 | en_US |
| dc.description.abstract | Francium, the heaviest alkali, possesses a unique combination of structural simplicity and great sensitivity to effects such as atomic parity non-conservation (APNC). We report in this thesis our progress towards measuring weak-interaction physics in a low energy system: the francium atom. We have built a new generation of high-efficiency laser cooling and trapping facility at TRIUMF national laboratory in Canada. We constructed a precision science chamber and demonstrate francium atom transfer into the precision trap, where the electromagnetic field environments can be exquisitely controlled such that weak-interaction studies via optical and microwave excitations can take place. We perform laser spectroscopy measurements of the hyperfine structure and isotope shifts in a chain of francium isotopes near the neutron closed shell (N = 126), including both ground and isomeric nuclear states. These measurements provide a basis for benchmarking state of the art atomic theory, as well as future nuclear structure calculations in Fr, necessary for interpreting the weak-interaction studies. These developments lay important foundations for precision parity non-conservation measurements with francium. | en_US |
| dc.identifier | https://doi.org/10.13016/M25922 | |
| dc.identifier.uri | http://hdl.handle.net/1903/17008 | |
| dc.language.iso | en | en_US |
| dc.subject.pqcontrolled | Physics | en_US |
| dc.title | Spectroscopy with Laser-cooled Francium and Progress on Atomic Parity Non-conservation | en_US |
| dc.type | Dissertation | en_US |
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