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Missing-mass spectroscopy of short-lived nuclei at low-momentum transfer region opened by the MAIKo active target / MAIKoアクティブ標的による、低運動量移行領域での単寿命原子核の質量欠損分光Furuno, Tatsuya 23 March 2020 (has links)
京都大学 / 0048 / 新制・課程博士 / 博士(理学) / 甲第22246号 / 理博第4560号 / 新制||理||1655(附属図書館) / 京都大学大学院理学研究科物理学・宇宙物理学専攻 / (主査)教授 永江 知文, 教授 田中 貴浩, 教授 萩野 浩一 / 学位規則第4条第1項該当 / Doctor of Science / Kyoto University / DGAM
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Single-Ion Spectroscopy of Two Electric Quadrupole Transitions in Ytterbium Ion and Excess Micromotion Minimization / Ybイオンの2つの電気四重極子遷移の単一イオン分光および過剰マイクロ運動の最小化Imai, Yasutaka 25 May 2020 (has links)
京都大学 / 0048 / 新制・課程博士 / 博士(工学) / 甲第22659号 / 工博第4743号 / 新制||工||1741(附属図書館) / 京都大学大学院工学研究科電子工学専攻 / (主査)教授 山田 啓文, 教授 川上 養一, 准教授 杉山 和彦 / 学位規則第4条第1項該当 / Doctor of Philosophy (Engineering) / Kyoto University / DFAM
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Charakterizace mikropohybu a jeho vliv na systematické posuvy frekvence kvadrupólového přechodu iontu vápníku zachyceného v Paulově pasti / Characterization of micro-motion and its influence on systematic frequency shifts of quadrupole transition of Calcium ion trapped in Paul trapVadlejch, Daniel January 2020 (has links)
This thesis deals with the analysis of micromotion of a single charged calcium ion trapped inside the linear Paul's ion trap and the influence of residual micromotion on the systematic frequency shifts of the clock transition of calcium ion. The fundamental properties of the motion of an ion confined within linear Paul's ion trap are shown in general using a theoretical description. The micromotion component of the overall motion is especially emphasized. A model expressing micromotion in the axial direction of the trap is introduced on the basis of the results of the numerical calculation of electric fields inside the trap. The model is compared to the reality experimentally. Then, the photon-correlation method of detection of micromotion is introduced and subsequently used to minimize and to estimate a measure of residual micromotion in all spacial directions. According to the achievable measure of residual micromotion, the systematic frequency shifts caused by this micromotion are estimated. It can be seen that we are able to reach uncertainties of the relative frequency shifts due to micromotion below 10^20. We expect that uncertainty of total motional systematic frequency shift is in our case limited by thermal motion.
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