A cryogenic Paul trap for probing the nuclear isomeric excited state [Formula: see text] Th [Formula: see text] [0.03%]
一种用于探测核异构激发态[公式]Th[,formula]的低温Paul陷阱
Daniel Moritz,Kevin Scharl,Markus Wiesinger et al.
Daniel Moritz et al.
Abstract: While laser excitation of the nuclear isomeric transition in 229 Th has been recently achieved for thorium atoms embedded in large-bandgap crystals, laser excitation and characterization of the nuclear transi...
Electron interaction with laser-desorbed thymidine and guanine in the gas phase [0.03%]
电子与激光解吸气相胸腺嘧啶和鸟嘌呤的相互作用
Debasish Parida,Jiakuan Chen,Lara Schorr et al.
Debasish Parida et al.
Abstract: In the present study we investigated electron attachment to the nucleoside thymidine (Td) and the nucleobase guanine (G) using a laser desorption source to transfer the compounds into the gas phase. Previous stu...
Muonium fine structure: theory update, tests of Lorentz violation, and experimental prospects [0.03%]
μ子重中精细结构：理论更新，洛伦兹破坏检验及实验展望
Philipp Blumer,Svenja Geissmann,Arnaldo J Vargas et al.
Philipp Blumer et al.
We review the status of the QED calculations for the muonium 2 S 1 / 2 - 2 P 3 / 2 energy interval and provide the updated theoretical value of 9874.357(1) MHz . Additionally, we present a model for probing Lorentz-violating coeffici...
Aleksei Semakin,Janne Ahokas,Otto Hanski et al.
Aleksei Semakin et al.
Abstract: We present a design and performance tests of an intense source of cold hydrogen atoms for loading large magnetic traps. Our source is based on a cryogenic dissociator of molecular hydrogen at 0.6 K followed by a...
Two-photon optical Ramsey-Doppler spectroscopy of positronium and muonium [0.03%]
正电子素和Muon的双光子光学拉曼-多普勒光谱分析
Evans Javary,Edward Thorpe-Woods,Irene Cortinovis et al.
Evans Javary et al.
Abstract: Positronium and muonium, as purely leptonic atoms without internal structure, provide ideal systems for high-precision tests of quantum electrodynamics (QED) and measurements of fundamental constants. However, t...
Philipp Blumer,Ben Ohayon,Paolo Crivelli
Philipp Blumer
Abstract: The potential of circulating antideuterons ( d ¯ ) in the AD/ELENA facility at CERN is under active investigation. Approximately 100 d ¯ per bunch could be delivered as a 100 keV beam based on meas...
Injection, confinement, and diagnosis of electrons and positrons in a permanent magnet dipole trap [0.03%]
永久磁铁偶极陷阱中的电子和正电子注入、限制及诊断
J von der Linden,S Nißl,A Deller et al.
J von der Linden et al.
Abstract: Prerequisites for the goal of studying long-lived, magnetically confined, electron-positron pair plasmas in the laboratory include the injection of both species into the trap, long trapping times, and suitable d...
GRASIAN: shaping and characterization of the cold hydrogen and deuterium beams for the forthcoming first demonstration of gravitational quantum states of atoms [0.03%]
GRASIAN：用于首次展示原子引力量子态的冷氢和氘束的生成与表征
Carina Killian,Philipp Blumer,Paolo Crivelli et al.
Carina Killian et al.
A low energy particle confined by a horizontal reflective surface and gravity settles in gravitationally bound quantum states. These gravitational quantum states (GQS) were so far only observed with neutrons. However, the existence of GQS i...
Renormalization of radiobiological response functions by energy loss fluctuations and complexities in chromosome aberration induction: deactivation theory for proton therapy from cells to tumor control [0.03%]
由能量损失涨落和染色体异常诱导的复杂性对辐射生物学反应函数进行正规化：从细胞到肿瘤控制的质子治疗去活化理论
Ramin Abolfath,Yusuf Helo,Lawrence Bronk et al.
Ramin Abolfath et al.
We employ a multi-scale mechanistic approach built upon our recent phenomenological/computational methodologies [R. Abolfath et al., Sci. Rep. 7, 8340 (2017)] to investigate radiation induced cell toxicities and deactivation mechanisms as a...
High resolution X-ray spectra of the time evolution of emission from metastable electronic states of highly charged Ni-like ions [0.03%]
高分辨X射谱揭示镍类高价离子长寿命亚稳激发态辐射的时间演化过程
Timothy Burke,Endre Takacs,Dipti et al.
Timothy Burke et al.
Abstract: Metastable levels of highly charged ions that can only decay via highly forbidden transitions can have a significant effect on the properties of high temperature plasmas. For example, the highly forbidden 3d 1...