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Lipid membranes in a physiological context cannot be understood without taking into account their mobile environment. Here, we report on a high energy-resolution neutron backscattering study to investigate slow motions on nanosecond time…

Biological Physics · Physics 2007-05-23 Maikel C. Rheinstädter , Tilo Seydel , Tim Salditt

We propose and analyze an electrostatic-optical nano-scale trap for cold diatomic polar molecules. The main ingredient of our proposal is an square-array of ferroelectric nano-rods {with alternating polarization}. We show that, in contrast…

Quantum Gases · Physics 2018-02-21 Omjyoti Dutta , Geza Giedke

Recent studies have demonstrated the possibility of accelerating electrons to MeV energies in ambient air using tightly focused laser configurations. In this article, we explore possible strategies to control and optimize the resulting…

A special class of molecules that are important to many subfields in molecular dynamics and chemical physics, namely free radical molecules, now enjoy a significant degree of center-of-mass motion control in the laboratory frame. The…

Atomic Physics · Physics 2009-11-10 J. R. Bochinski , Eric R. Hudson , H. J. Lewandowski , Jun Ye

We present measurements of the internal state distribution of electrostatically guided formaldehyde. Upon excitation with continuous tunable ultraviolet laser light the molecules dissociate, leading to a decrease in the molecular flux. The…

Chemical Physics · Physics 2011-11-10 M. Motsch , M. Schenk , L. D. van Buuren , M. Zeppenfeld , P. W. H. Pinkse , G. Rempe

Optically levitated nanospheres are highly sensitive to the motion of their center of mass even under small momentum transfer. We propose detecting exotic particles via nucleon scattering in such spheres in the context of an ongoing…

High Energy Physics - Phenomenology · Physics 2025-02-04 Bhaskar Dutta , Dilip Kumar Ghosh , Sk Jeesun

Three different configurations of compact magneto-optical sources of slow Rb atoms(LVIS, 2D(+)-MOT and 2D-MOT) were compared with each other at fixed geometry of cooling laser beams. A precise control of the intensity balances between the…

Atomic Physics · Physics 2009-11-10 Yuri B. Ovchinnikov

We use molecules to couple light into and out of microscale plasmonic waveguides. Energy transfer, mediated by surface plasmons, from donor molecules to acceptor molecules over ten micrometer distances is demonstrated. Also surface plasmon…

Broadband spectroscopic observations with high sensitivity provide an unbiased way to detect emissions of molecules in space. We present deep observations from ~ 105.8 GHz to 113.6 GHz toward 50 Galactic massive star-forming regions using…

Solar and Stellar Astrophysics · Physics 2024-12-16 Xuefang Xu , Junzhi Wang , Qian Gou , Juan Li , Donghui Quan , Di Li , Fei Li , Chunguo Duan , Juncheng Lei

We investigate the different facets of ion acceleration by a relativistically intense circularly polarized laser pulse interacting with thin near-critical density plasma targets. Our simulations establish that plasma density gradient and…

Plasma Physics · Physics 2023-07-28 Shivani Choudhary , Sudipta Mondal , Daniele Margarone , Subhendu Kahaly

A quantum gas of ultracold polar molecules, with long-range and anisotropic interactions, would not only enable explorations of a large class of many-body physics phenomena, but could also be used for quantum information processing. We…

Beams of helium atoms in Rydberg-Stark states with principal quantum number $n=48$ and electric dipole moments of 4600~D have been decelerated from a mean initial longitudinal speed of 2000~m/s to zero velocity in the laboratory-fixed…

Atomic Physics · Physics 2016-03-18 P. Lancuba , S. D. Hogan

Stationary target measurements of the nucleon form factors have been performed with high precision down to $Q^2$ of $\sim$ 0.01 GeV$^2$ for protons ($G_E^p$) and down to $\sim$ 0.1 GeV$^2$ for neutrons ($G_M^n$). Conventional extraction…

Nuclear Experiment · Physics 2010-01-15 G. Ron , E. Piasetzky , B. Wojtsekhowski

High peak power, tunable, narrowband terahertz emitters are becoming sought after given their portability, efficiency, and ability to be deployed in the field for industrial, medical, and military applications. The use of accelerator…

The guiding and control of ultrahigh flux, femtosecond relativistic electron pulses through solid density matter is of great importance for many areas of high energy density science. Efforts so far include the use of magnetic fields…

A magnetometric technique is demonstrated that may be suitable for precision measurements of fields ranging from the sub-microgauss level to above the Earth field. It is based on resonant nonlinear magneto-optical rotation caused by atoms…

Atomic Physics · Physics 2009-11-07 D. Budker , D. F. Kimball , V. V. Yashchuk , M. Zolotorev

Experiments using polarized $^{3}He$ atom beams to search for short range spin dependent forces are proposed. High intensity, high polarization, small beam size $^{3}He$ atom beams have been successfully produced and used in surface science…

Instrumentation and Detectors · Physics 2015-06-22 H. Yan

In this paper we describe the high-voltage generation system we have developed for a traveling-wave Stark decelerator (TWSD). The TWSD can reduce the forward velocity of a molecular beam of heavy neutral polar molecules such as strontium…

Atomic Physics · Physics 2026-02-12 Lucas van Sloten , Leo Huisman , Steven Hoekstra

Radiation damping is generally observed when the sample with high spin concentration and high gyro-magnetic ratio is placed in a high magnetic field. However, we firstly observed liquid state 129Xe radiation damping using laser-enhanced…

Soft Condensed Matter · Physics 2007-05-23 Xin Zhou , Jun Luo , Xian-ping Sun , Xi-zhi Zeng , Ming-sheng Zhan , Shang-wu Ding , Mai-li Liu

Orientation states of two coupled polar molecules controlled by laser pulses are studied theoretically. By varying the period of a series of periodically applied laser pulse, transition from regular to chaotic behavior may occur. Schmidt…

Quantum Physics · Physics 2007-05-23 Ying-Yen Liao , Yueh-Nan Chen , Der-San Chuu
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