Results 21 to 30 of about 304,586 (264)

Precise Determination of Magnetic Gradient Relaxation of Coupled Atomic Spin Ensemble in Spin-Exchange Relaxation-Free Co-Magnetometer

open access: yesPhotonics, 2023
Inside a spin-exchange relaxation-free (SERF) co-magnetometer with a high-pressure buffer gas atomic cell, the magnetic field gradient causes the decoherence of atomic spins to produce magnetic-field gradient relaxation.
Xiujie Fang   +7 more
doaj   +1 more source

Quantum optics with Rydberg superatoms

open access: yesJournal of Physics Communications, 2023
Quantum optics based on highly excited atoms, also known as Rydberg atoms, has cemented itself as a powerful platform for the manipulation of light at the few-photon level.
Jan Kumlin   +5 more
doaj   +1 more source

Drift-free tracking via the construction of an effective dictionary

open access: yesInternational Journal of Advanced Robotic Systems, 2020
Template dictionary construction is an important issue in sparse representation (SP)-based tracking algorithms. In this article, a drift-free visual tracking algorithm is proposed via the construction of an effective template dictionary.
Li Zhao   +4 more
doaj   +1 more source

Carrier-free Raman manipulation of trapped neutral atoms

open access: yesNew Journal of Physics, 2014
We experimentally realize an enhanced Raman control scheme for neutral atoms that features an intrinsic suppression of the two-photon carrier transition, but retains the sidebands which couple to the external degrees of freedom of the trapped atoms. This
René Reimann   +6 more
doaj   +1 more source

Relationship structure-antioxidant activity of hindered phenolic compounds

open access: yesGrasas y Aceites, 2014
The relationship between the structure and the antioxidant activity of 21 hindered phenolic compounds was investigated by Rancimat and DPPH· tests. 3-tert-butyl-5-methylbenzene-1,2-diol is the strongest antioxidant in the Rancimat test but not in the ...
X. C. Weng, Y. Huang
doaj   +1 more source

Dipotassium zinc tetraiodate(V) dihydrate

open access: yesActa Crystallographica Section E, 2010
The title compound, K2Zn(IO3)4·2H2O, contains two symmetry-independent K and I atoms. These atoms, as well as the Zn atom, are coordinated by shared O atoms and, moreover, the Zn atom is coordinated by two water molecules in trans positions. The
Ivana Císařová   +2 more
doaj   +1 more source

Driving atoms into decoherence-free states

open access: yesNew Journal of Physics, 2000
12 pages, 3 figures, more detailed version, accepted for publication in New Journal of Physics, see http://www.njp.org/
Beige, A, Braun, D, Knight, PL
openaire   +4 more sources

Prospects for Studies of the Free Fall and Gravitational Quantum States of Antimatter

open access: yesAdvances in High Energy Physics, 2015
Different experiments are ongoing to measure the effect of gravity on cold neutral antimatter atoms such as positronium, muonium, and antihydrogen.
G. Dufour   +8 more
doaj   +1 more source

Field-Theoretical Representation of Interactions between Particles: Classical Relativistic Probability-Free Kinetic Theory

open access: yesUniverse, 2022
It was proven that the class of stable interatomic potentials can be represented exactly as a superposition of Yukawa potentials. In this paper, an auxiliary scalar field was introduced to describe the dynamics of a system of neutral particles (atoms) in
Anatoly Yu. Zakharov, Victor V. Zubkov
doaj   +1 more source

Effect of polarity and steric on the rate addition of free radicals to Alkenes [PDF]

open access: yesKirkuk Journal of Science, 2009
In this investigation, the effective factors on the addition rate for hydroxy methyl and cynomethyl free radicals to some alkenes have been studied using quantum mechanics methods. Where in this study, physical properties like the electron density on the
Najla.J. Khalil, Mostafa.R. Aeyd
doaj   +1 more source

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