arXiv: Atomic Physics最新文献_第6页

Data for: The branching ratio of intercombination $A^1Sigma^+sim b^3Pito a^3Sigma^+/X^1Sigma^+$ transitions in the RbCs molecule: measurements and calculations 数据:红细胞分子中相互结合的分支比$A^1Sigma^+sim b^3Pito a^3Sigma^+/X^1Sigma^+$跃迁:测量和计算

arXiv: Atomic Physics Pub Date : 2020-07-09 DOI: 10.17632/M256T3PV3R.1

R. Ferber, A. Stolyarov

{"title":"Data for: The branching ratio of intercombination $A^1Sigma^+sim b^3Pito a^3Sigma^+/X^1Sigma^+$ transitions in the RbCs molecule: measurements and calculations","authors":"R. Ferber, A. Stolyarov","doi":"10.17632/M256T3PV3R.1","DOIUrl":"https://doi.org/10.17632/M256T3PV3R.1","url":null,"abstract":"We observed the $A^1Sigma^+sim b^3Pito a^3Sigma^+/X^1Sigma^+$ laser-induced fluorescence (LIF) spectra of the RbCs molecule excited from the ground $X^1Sigma^+$ state by the Ti:Sapphire laser. The LIF radiation from the common perturbed levels of the singlet-triplet $Asim b$ complex was recorded by the Fourier-transform (FT) spectrometer with the instrumental resolution of 0.03~cm$^{-1}$. The relative intensity distribution in the rotationally resolved $Asim bto a^3Sigma^+(v_a)/X^1Sigma^+(v_X)$ progressions was measured, and their branching ratio was found to be about of 1$÷$5$ times$10$^{-4}$ in the bound region of the $a^3Sigma^+$ and $X^1Sigma^+$ states. The experiment was complemented with the scalar and full relativistic calculations of the $A/b - X/a$ transition dipole moments (TDMs) as functions of internuclear distance. The relative systematic error in the resulting emph{ab initio} TDM functions evaluated for the strong $A - X$ transition was estimated as few percent in the energy region, where the experimental LIF intensities are relevant. The relative spectral sensitivity of the FT registration system, operated with the InGaAs diode detector and CaF beam-splitter, was calibrated in the range $[6~500,12~000]$~cm$^{-1}$ by a comparison of experimental intensities in the long $Asim bto X(v_X)$ LIF progressions of the K$_2$ and KCs molecules with their theoretical counterparts evaluated using the emph{ab initio} $A - X$ TDMs. Both experimental and theoretical transition probabilities can be employed to improve the stimulated Raman adiabatic passage process, $ato Asim b to X$, which is exploited for a laser assembling of ultracold RbCs molecules.","PeriodicalId":8441,"journal":{"name":"arXiv: Atomic Physics","volume":"64 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80831677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sequential single-photon and direct two-photon absorption processes for Xe interacting with attosecond XUV pulses Xe与阿秒XUV脉冲相互作用的顺序单光子和直接双光子吸收过程

arXiv: Atomic Physics Pub Date : 2020-07-03 DOI: 10.1103/physreva.102.043108

A. Hadjipittas, H. Banks, B. Bergues, A. Emmanouilidou

引用次数: 2

Theoretical determination of polarizability and magnetic susceptibility of neon 氖的极化率和磁化率的理论测定

arXiv: Atomic Physics Pub Date : 2020-06-27 DOI: 10.1103/physreva.102.052816

M. Lesiuk, M. Przybytek, B. Jeziorski

{"title":"Theoretical determination of polarizability and magnetic susceptibility of neon","authors":"M. Lesiuk, M. Przybytek, B. Jeziorski","doi":"10.1103/physreva.102.052816","DOIUrl":"https://doi.org/10.1103/physreva.102.052816","url":null,"abstract":"We report theoretical determination of the dipole polarizability of the neon atom, including its frequency dependence. Corrections for the relativistic, quantum electrodynamics, finite nuclear mass, and finite nuclear size effects are taken into account. We obtain the value $alpha_0=2.66080(36)$ for the static polarizability, and $alpha_2=2.850(7)$ and $alpha_4=4.932(14)$ for the first two polarizability dispersion coefficients (Cauchy moments); all values are in atomic units (a.u.). In the case of static polarizability, our result agrees with the best experimental determination [C. Gaiser and B. Fellmuth, Phys. Rev. Lett. 120, 123203 (2018)], but our estimated uncertainty is significantly larger. For the dispersion coefficients, the results obtained in this work appear to be the most accurate to date overall compared to published theoretical and experimental data. We also calculated the static magnetic susceptibility of the neon atom, needed to obtain the refractive index of gaseous neon. Our result, $chi_0 = -8.484(19) cdot 10^{-5}$ a.u., is about 9% larger in absolute value than the recommended experimental value [CRC Handbook of Chemistry and Physics, CRC Press, 2019, p. 4-145].","PeriodicalId":8441,"journal":{"name":"arXiv: Atomic Physics","volume":"189 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77359741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Magnetometry using sodium fluorescence with synchronous modulation of two-photon resonant light fields 同步调制双光子共振光场的钠荧光磁强计

arXiv: Atomic Physics Pub Date : 2020-06-25 DOI: 10.1063/5.0030696

R. Grewal, Mauricio Pulido, G. Pati, R. Tripathi

引用次数: 5

Ellipticity-dependent sequential over-barrier ionization of cold rubidium 依赖椭圆度的冷铷序贯过势垒电离

arXiv: Atomic Physics Pub Date : 2020-06-16 DOI: 10.1103/physreva.102.043112

J. Yuan, Shiwei Liu, Xincheng Wang, Z. Shen, Yixuan Ma, Huanyu Ma, Qiuxiang Meng, T. Yan, Yizhu Zhang, A. Dorn, M. Weidemüller, D. Ye, Yuhai Jiang

引用次数: 3

Cavity probe for real-time detection of atom dynamics in an optical lattice 用于光学晶格中原子动力学实时探测的腔探针

arXiv: Atomic Physics Pub Date : 2020-06-08 DOI: 10.1103/physreva.102.051301

R. Niederriter, Chandler Schlupf, P. Hamilton

引用次数: 6

Perturbative theory of statistically averaged atomic dynamics in fluctuating laser fields 波动激光场中统计平均原子动力学的微扰理论

arXiv: Atomic Physics Pub Date : 2020-06-03 DOI: 10.1103/physreva.102.053111

Tejaswi Katravulapally, L. A. A. Nikolopoulos

引用次数: 0

Establishing a nearly closed cycling transition in a polyatomic molecule 在多原子分子中建立近乎封闭的循环跃迁

arXiv: Atomic Physics Pub Date : 2020-06-02 DOI: 10.1103/PhysRevA.103.043111

L. Baum, N. Vilas, Christian Hallas, B. Augenbraun, S. Raval, D. Mitra, J. Doyle

引用次数: 17

Role of rotational coherence in femtosecond-pulse-driven nitrogen ion lasing 旋转相干性在飞秒脉冲驱动氮离子激光中的作用

arXiv: Atomic Physics Pub Date : 2020-05-22 DOI: 10.1103/PHYSREVRESEARCH.2.023329

Hongqiang Xie, H. Lei, Guihua Li, Qian Zhang, Xiaowei Wang, Jing Zhao, Zhiming Chen, J. Yao, Ya Cheng, Zengxiu Zhao

{"title":"Role of rotational coherence in femtosecond-pulse-driven nitrogen ion lasing","authors":"Hongqiang Xie, H. Lei, Guihua Li, Qian Zhang, Xiaowei Wang, Jing Zhao, Zhiming Chen, J. Yao, Ya Cheng, Zengxiu Zhao","doi":"10.1103/PHYSREVRESEARCH.2.023329","DOIUrl":"https://doi.org/10.1103/PHYSREVRESEARCH.2.023329","url":null,"abstract":"We experimentally investigated the rotationally resolved polarization characteristics of N$_2^+$ lasing at 391 and 428 nm using a pump-seed scheme. By varying the relative angle between the linear polarizations of the pump and seed, it is found that the polarizations of the P and R branches of 391-nm lasing are counter-rotated. By contrast, both branches of 428-nm lasing remain polarized along the pump. The origin of the puzzled abnormal polarization characteristics is found based on a complete physical model that simultaneously includes the transient photoionization and the subsequent coupling among the electronic, vibrational and rotational quantum states of this http URL suggests that the cascaded resonant Raman processes following ionization create negative coherence between the rotational states of $J$ and $J$+2 in the ionic ground state X$^2Sigma_g^+(nu=0)$, which leads to mirror-symmetrical polarization for the P and R branches of 391-nm lasing. Both the experiment and theory indicate that the demonstrated rotational coherence plays an extremely pivotal role in clarifying the gain mechanism of N$_2^+$ lasing and opens up the route toward quantum optics under ultrafast strong fields.","PeriodicalId":8441,"journal":{"name":"arXiv: Atomic Physics","volume":"121 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76199097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 13

Magneto-Optical Trap with Millimeter Ball Lenses 毫米球透镜磁光阱

arXiv: Atomic Physics Pub Date : 2020-05-20 DOI: 10.1103/PHYSREVAPPLIED.14.044013

C. S. Nichols, L. Nofs, M. Viray, Lu Ma, E. Paradis, G. Raithel

引用次数: 3