发布求助
文献互助 智能选刊 最新文献

Journal of Physics B: Atomic, Molecular and Optical Physics最新文献

筛选
英文 中文
Muon-induced nuclear magnetic moments in spinless muonic atoms: a simple estimate 无自旋μ介子原子中的μ介子诱导核磁矩：简单估算
IF 1.6 4区 物理与天体物理
Journal of Physics B: Atomic, Molecular and Optical Physics Pub Date : 2024-04-25 DOI: 10.1088/1361-6455/ad38a9
K A Beyer and N S Oreshkina
{"title":"Muon-induced nuclear magnetic moments in spinless muonic atoms: a simple estimate","authors":"K A Beyer and N S Oreshkina","doi":"10.1088/1361-6455/ad38a9","DOIUrl":"https://doi.org/10.1088/1361-6455/ad38a9","url":null,"abstract":"In an attempt to address the long-standing fine-structure puzzle in heavy muonic atoms we investigate the magnetic interaction between a nucleus and its bound muon. A simple estimate shows that the effect is only noticeable for unrealistic nuclear parameters. A further investigation as to the relation of this effect to nuclear polarisation (NP) identifies the interaction as the magnetic dipole part of NP. Motivated by the relative closeness of this simple estimate to rigorous evaluations of NP, we extract effective values for the nuclear magnetic polarisability, a quantity otherwise unknown for all but the lightest nuclei.","PeriodicalId":16826,"journal":{"name":"Journal of Physics B: Atomic, Molecular and Optical Physics","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140802211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Energy spectrum and superfluidity breakdown of Bose-Einstein condensates in opticallattice under density-dependent artificial gauge field 光格中玻色-爱因斯坦凝聚体在密度相关人工规场下的能谱和超流击穿
IF 1.6 4区 物理与天体物理
Journal of Physics B: Atomic, Molecular and Optical Physics Pub Date : 2024-04-23 DOI: 10.1088/1361-6455/ad41c0
Ming Zhi Zhou, Yun Ma, Shi Dong Xu, Lai-Lai Mi, A. Zhang, J. Xue
{"title":"Energy spectrum and superfluidity breakdown of Bose-Einstein condensates in opticallattice under density-dependent artificial gauge field","authors":"Ming Zhi Zhou, Yun Ma, Shi Dong Xu, Lai-Lai Mi, A. Zhang, J. Xue","doi":"10.1088/1361-6455/ad41c0","DOIUrl":"https://doi.org/10.1088/1361-6455/ad41c0","url":null,"abstract":"\u0000 The nonlinear feedback between the gauge field and the material field can yield novel quantum phenomena. Here, the interplay of a density-dependent artificial gauge field and Bose-Einstein con densates (BECs) trapped in optical lattice are studied. The energy spectrum and superfluidity represented by energetic and dynamical stabilities of the system are systematically discussed. The density-dependent artificial gauge field with a back-action between the BECs dynamics and the gauge field induces an effective atomic interaction that depends on the quasi-momentum and den sity of the condensates, resulting in symmetry-broken energy spectrum and exotic stability phase diagram, i.e., the system is stable only in a certain range of atoms density and under a limited lattice strength. The density-dependent artificial gauge field changes the sequence for the emergence of energetic and dynamical instability and the regimes of the energetic and dynamical instabilities are significantly separated, offering an efficient way to study the energetic and dynamical instabilities of superfluid separately. Particularly, the density-dependent artificial gauge field, as a mechanism for transferring momentum to the fluid, results in dynamic instability of the condensates even in free space. Our results provide a deep insight into the dynamical response of superfluid system to the gauge field and have potential application for coherent control of exotic superfluid states.","PeriodicalId":16826,"journal":{"name":"Journal of Physics B: Atomic, Molecular and Optical Physics","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140667500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Glory interference spectroscopy in Sr atom 锶原子中的光辉干涉光谱
IF 1.6 4区 物理与天体物理
Journal of Physics B: Atomic, Molecular and Optical Physics Pub Date : 2024-04-23 DOI: 10.1088/1361-6455/ad421e
K. Ferentinou, S. Danakas, Christian Bordas, Samuel Cohen
{"title":"Glory interference spectroscopy in Sr atom","authors":"K. Ferentinou, S. Danakas, Christian Bordas, Samuel Cohen","doi":"10.1088/1361-6455/ad421e","DOIUrl":"https://doi.org/10.1088/1361-6455/ad421e","url":null,"abstract":"\u0000 Slow (meV) photoelectron imaging spectroscopy is employed in the experimental study of near-threshold photoionization of strontium atoms in the presence of an external static electric field. Specifically, the study is devoted to the glory effect, that is, the appearance of an intense peak at the center of the recorded photoelectron images, when dealing with m=0 final ionized Stark states (m denoting the magnetic quantum number). This critical effect is formally identical to that encountered in classical scattering theory, where, for a nonzero value of the impact parameter, the zero-crossing of the deflection function leads to a divergent classical differential cross section. By re-cording the magnitude variation of this glory peak as a function of electron excitation energy, we observe that, besides the traces of classical origin, it also exhibits intense quantum interference and beating phenomena, above and below the zero-static-field ionization threshold. We study both, single- and two-photon ionization of Sr, thus enabling a comparison not only between the different excitation schemes, but also with an earlier work devoted to two-photon ionization of Mg atom by Kalaitzis et al (2020 Phys. Rev. A 102, 033101). Our recordings are analyzed within the framework of the Harmin-Fano frame transformation Stark effect theory that is applied to both the hydrogen atom and a non-hydrogenic one simulating Sr. We discuss the various aspects of the recorded and calculated glory interference and beating structures and their “short time Fourier transforms” and classify them as either atom-specific or atom independent. In particular, we verify the “universal” connection between the glory oscillations above the zero-field threshold and the differences be-tween the origin-to-detector times of flight corresponding to pairs of classical electron trajectories that end up to the image center.","PeriodicalId":16826,"journal":{"name":"Journal of Physics B: Atomic, Molecular and Optical Physics","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140666951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Separation of kinetic rate orders in extreme ultraviolet transient grating spectroscopy 分离极紫外瞬态光栅光谱中的动力学速率阶次
IF 1.6 4区 物理与天体物理
Journal of Physics B: Atomic, Molecular and Optical Physics Pub Date : 2024-04-23 DOI: 10.1088/1361-6455/ad421f
Hugo J. B. Marroux, Serhii Polishchuk, O. Cannelli, R. Ingle, Giulia F. Mancini, Camila Bacellar, Michele Puppin, R. Géneaux, G. Knopp, L. Foglia, E. Pedersoli, F. Capotondi, Ivaylo Nikolov, F. Bencivenga, R. Mincigrucci, Claudio Masciovecchio, Majed Chergui
{"title":"Separation of kinetic rate orders in extreme ultraviolet transient grating spectroscopy","authors":"Hugo J. B. Marroux, Serhii Polishchuk, O. Cannelli, R. Ingle, Giulia F. Mancini, Camila Bacellar, Michele Puppin, R. Géneaux, G. Knopp, L. Foglia, E. Pedersoli, F. Capotondi, Ivaylo Nikolov, F. Bencivenga, R. Mincigrucci, Claudio Masciovecchio, Majed Chergui","doi":"10.1088/1361-6455/ad421f","DOIUrl":"https://doi.org/10.1088/1361-6455/ad421f","url":null,"abstract":"\u0000 We present an Extreme Ultraviolet (EUV) transient grating (TG) experiment of the spinel Co3O4 compound using tuneable incident energies across the Co M2,3-edge and a 395 nm probe pulse, detecting both the first and the second diffraction orders. While the first diffraction order shows a monotonous behaviour as a function of time, with a sharp response at t=0, followed by a weak sub-picosecond component and a nearly constant signal thereafter, the time dependence of second diffraction order varies dramatically with the incident energy as it is tuned across the Co M-edge, with the appearance of a component at t>1 ps that grows with increasing energy. The results are rationalised in terms of the deviations of the initial grating from sinusoidal to non-sinusoidal, namely a flattening of the grating pattern, that introduces new Fourier components. These deviations are due to higher order, three-body terms in the population relaxation kinetics. These results highlight the use of the response of the second diffraction order in EUV TG as a tool to identify higher order terms in the population kinetics.","PeriodicalId":16826,"journal":{"name":"Journal of Physics B: Atomic, Molecular and Optical Physics","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140666515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electron-molecule collision calculations: a primer 电子-分子碰撞计算：入门指南
IF 1.6 4区 物理与天体物理
Journal of Physics B: Atomic, Molecular and Optical Physics Pub Date : 2024-04-23 DOI: 10.1088/1361-6455/ad4243
J. Tennyson
{"title":"Electron-molecule collision calculations: a primer","authors":"J. Tennyson","doi":"10.1088/1361-6455/ad4243","DOIUrl":"https://doi.org/10.1088/1361-6455/ad4243","url":null,"abstract":"\u0000 Electron-molecule collisions drive many natural phenomena and are playing an increasing role in modern technologies. Over recent years studies of these collision processes have become increasingly driven by quantum mechanical calculations rather than experiments. This tutorial surveys important issues, underlying physics and theoretical methods used to study electron molecule collisions. It is aimed at the non-specialist with suitable references for further reading for those interested and pointers to software for those wanting to perform actual calculations.","PeriodicalId":16826,"journal":{"name":"Journal of Physics B: Atomic, Molecular and Optical Physics","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140669732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Reduction of light shifts in a cold-atom CPT clock 减少冷原子 CPT 时钟中的光变
IF 1.6 4区 物理与天体物理
Journal of Physics B: Atomic, Molecular and Optical Physics Pub Date : 2024-04-23 DOI: 10.1088/1361-6455/ad4244
Maojie Li, Zhu Ma, Jiatao Wu, Chang Zhan, Chengyin Han, Bo Lu, Jiahao Huang, Chaohong Lee
{"title":"Reduction of light shifts in a cold-atom CPT clock","authors":"Maojie Li, Zhu Ma, Jiatao Wu, Chang Zhan, Chengyin Han, Bo Lu, Jiahao Huang, Chaohong Lee","doi":"10.1088/1361-6455/ad4244","DOIUrl":"https://doi.org/10.1088/1361-6455/ad4244","url":null,"abstract":"\u0000 Light shifts induced during atom-light interactions significantly affect the medium- and long-term frequency stability of atomic clocks. Here, we employ composite laser pulse sequences to mitigate interrogation-induced light shifts in a cold-atom coherent-population-trapping clock. We obtain the anti-symmetry error signal via modulating the local oscillator phase in the free-evolution time of Ramsey interferometry. Utilizing this signal, we employ two feedback loops to simultaneously eliminate light shifts and stabilize the clock frequency using the auto-balanced Ramsey spectroscopy scheme. Our experimental results demonstrate that this approach can reduce the clock frequency's sensitivity to variations in light shifts by implementing four Ramsey sub-sequences. Furthermore, we show that the auto-balanced Ramsey spectroscopy scheme enhances the long-term frequency stability of the atomic clock when the averaging time $tau>5000$ s.","PeriodicalId":16826,"journal":{"name":"Journal of Physics B: Atomic, Molecular and Optical Physics","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140667148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The excitation energies and hyperfine structures for 2l, 3l states in lithiumlike ions 类锂离子中 2l、3l 态的激发能和超细结构
IF 1.6 4区 物理与天体物理
Journal of Physics B: Atomic, Molecular and Optical Physics Pub Date : 2024-04-23 DOI: 10.1088/1361-6455/ad41bf
BIng-Bing Li, Jun Jiang, Lei Wu, Ru-Kui Zhang, Xian-Jun Li, Chen-Zhong Dong
{"title":"The excitation energies and hyperfine structures for 2l, 3l states in lithiumlike ions","authors":"BIng-Bing Li, Jun Jiang, Lei Wu, Ru-Kui Zhang, Xian-Jun Li, Chen-Zhong Dong","doi":"10.1088/1361-6455/ad41bf","DOIUrl":"https://doi.org/10.1088/1361-6455/ad41bf","url":null,"abstract":"\u0000 Combining the multi-configuration Dirac-Hartree-Fock (MCDHF) method and the model-QED approach, the wave functions, transition energies and hyperfine structures constants for 2l, 3l states in Li-like Ne7+, Mg 9+, Al 10+, P 12+, Ar 15+ and Ca 17+ ions are calculated. The effects of electron correlation, Breit interactions, nuclear recoil and quantum electrodynamics (QED) effects are analyzed in detail. We find that the contribution of the non-diagonal elements of the self-energy is significant for the 2p1/2 → 2s 1/2 and 2p 3/2 → 2s 1/2 transitions. However, for the 3l → 2s 1/2 transitions, the contribution of non-diagonal elements is small. The accuracy of the currently calculated hyperfine structure constants is expected to be within 1%.","PeriodicalId":16826,"journal":{"name":"Journal of Physics B: Atomic, Molecular and Optical Physics","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140667348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Shortcuts to adiabaticity: theoretical framework, relations between different methods, and versatile approximations 绝热捷径：理论框架、不同方法之间的关系以及通用近似值
IF 1.6 4区 物理与天体物理
Journal of Physics B: Atomic, Molecular and Optical Physics Pub Date : 2024-04-21 DOI: 10.1088/1361-6455/ad38f1
Takuya Hatomura
{"title":"Shortcuts to adiabaticity: theoretical framework, relations between different methods, and versatile approximations","authors":"Takuya Hatomura","doi":"10.1088/1361-6455/ad38f1","DOIUrl":"https://doi.org/10.1088/1361-6455/ad38f1","url":null,"abstract":"Shortcuts to adiabaticity guide given systems to final destinations of adiabatic control via fast tracks. Various methods have been proposed as shortcuts to adiabaticity. The basic theory of shortcuts to adiabaticity was established in the 2010s, but it has still been developing and many fundamental findings have been reported. In this topical review, we give a pedagogical introduction to the theory of shortcuts to adiabaticity and revisit relations between different methods. Some versatile approximations in counterdiabatic driving, which is one of the methods of shortcuts to adiabaticity, will be explained in detail. We also summarize the recent progress in studies of shortcuts to adiabaticity.","PeriodicalId":16826,"journal":{"name":"Journal of Physics B: Atomic, Molecular and Optical Physics","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140802441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Multiphoton single and double ionization of neon in the EUV 超紫外线中氖的多光子单电离和双电离
IF 1.6 4区 物理与天体物理
Journal of Physics B: Atomic, Molecular and Optical Physics Pub Date : 2024-04-18 DOI: 10.1088/1361-6455/ad4078
Stephen M. Durkan, V. Richardson, L. Varvarezos, Andrew Forembski, D. Cubaynes, Stefan Duesterer, P. N. Juranic, Wenbin Li, K. Tiedtke, Mathias Richter, Michael Meyer, L. Nikolopoulos, John T Costello
{"title":"Multiphoton single and double ionization of neon in the EUV","authors":"Stephen M. Durkan, V. Richardson, L. Varvarezos, Andrew Forembski, D. Cubaynes, Stefan Duesterer, P. N. Juranic, Wenbin Li, K. Tiedtke, Mathias Richter, Michael Meyer, L. Nikolopoulos, John T Costello","doi":"10.1088/1361-6455/ad4078","DOIUrl":"https://doi.org/10.1088/1361-6455/ad4078","url":null,"abstract":"\u0000 New information demonstrating the importance of both sequential and simultaneous (or direct) multiphoton ionization of inner shell electrons from neon is discussed in this paper. Ne was irradiated with intense 93 eV free electron laser (FEL) pulses at FLASH and studied with the aid of photoelectron spectrometry. This resulted in two and three photon, single and double ionization of neon, removing electrons from 2s and 2p subshells of the neutral Ne atom in multiple different pathways. The spectral features of the photoelectrons were identified through comparison with the NIST database and field averaged time-dependent density matrix theory. The calculations show the direct multiphoton ionization processes to be extremely sensitive to the focused FEL intensity.","PeriodicalId":16826,"journal":{"name":"Journal of Physics B: Atomic, Molecular and Optical Physics","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140686168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dipolar focusing in laser-assisted positronium formation 激光辅助正电子形成过程中的双极聚焦
IF 1.6 4区 物理与天体物理
Journal of Physics B: Atomic, Molecular and Optical Physics Pub Date : 2024-04-16 DOI: 10.1088/1361-6455/ad3f5a
H. Ambalampitiya, M. Matfunjwa, Ilya Fabrikant
{"title":"Dipolar focusing in laser-assisted positronium formation","authors":"H. Ambalampitiya, M. Matfunjwa, Ilya Fabrikant","doi":"10.1088/1361-6455/ad3f5a","DOIUrl":"https://doi.org/10.1088/1361-6455/ad3f5a","url":null,"abstract":"\u0000 We consider theoretically positronium formation in collisions of positrons with excited hydrogen atoms H($n$) in an infrared laser field. This process is assisted by the dipolar focusing effect: a positron moving in a superposition of a laser field and the dipolar field can approach the atomic target even if its trajectory starts with a very large impact parameter, leading to a significant enhancement of the Ps formation cross section. Classical trajectory Monte Carlo method, which is justified for $ngeq 3$, allows efficient calculation of this enhancement. A similar effect can occur in collisions of positrons with other atoms in excited states which can lead to improvements in efficiency of positronium formation.","PeriodicalId":16826,"journal":{"name":"Journal of Physics B: Atomic, Molecular and Optical Physics","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140695659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信