Results 31 to 40 of about 11,049,624 (308)

Study on Focusing High Current Electron Beams with Quadrupole Magnets in LIA

open access: yesYuanzineng kexue jishu, 2023
Aimed to obtain small-sized beam spots, the focusing characteristics of high current electron beams generated by linear induction accelerators (LIA) with the quadrupole magnets were studied in this paper. The main factors which influence the minimum beam
JING Xiaobing;WANG Yi;YANG Zhiyong;SHI Jinshui
doaj   +1 more source

Investigations of Ra$^+$ properties to test possibilities of new optical frequency standards [PDF]

open access: yes, 2007
The present work tests the suitability of the narrow transitions $7s \ ^2S_{1/2} \to 6d ^2D_{3/2}$ and $7s ^2S_{1/2} \to 6d ^2D_{5/2}$ in Ra$^+$ for optical frequency standard studies. Our calculations of the lifetimes of the metastable $6d$ states using
A. Szabo   +10 more
core   +1 more source

Coupled–Channels Analyses For Heavy–Ion Fusion Reactions of 16O+92Zr,144,148Sm Systems

open access: yesAtom Indonesia, 2010
We study in detail the fusion reaction of 16O with 92Zr and 144,148Sm at sub-barrier energies with coupled-channels framework using the error function potential for the nuclear potential.
M. Zamrun , K. Hagino
doaj   +1 more source

Accurate long-range coefficients for two excited like isotope He atoms: He($2 ^1P$)--He($2 ^1P$), He($2 ^1P$)--He($2 ^3P$), and He($2 ^3P$)--He($2 ^3P$) [PDF]

open access: yes, 2007
A general formalism is used to express the long-range potential energies in inverse powers of the separation distance between two like atomic or molecular systems with $P$ symmetries.
Babb, J. F.   +4 more
core   +3 more sources

Gas flow in barred potentials – III. Effects of varying the quadrupole [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2015
accepted for publication in MNRAS.
Mattia C. Sormani   +2 more
openaire   +2 more sources

LC-ESI-QTOF-MS/MS Characterization of Seaweed Phenolics and Their Antioxidant Potential

open access: yesMarine Drugs, 2020
Seaweed is an important food widely consumed in Asian countries. Seaweed has a diverse array of bioactive compounds, including dietary fiber, carbohydrate, protein, fatty acid, minerals and polyphenols, which contribute to the health benefits and ...
Biming Zhong   +5 more
semanticscholar   +1 more source

Vector potential and stored energy of a quadrupole magnet array [PDF]

open access: yesProceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366), 1999
The vector potential, magnetic field and stored energy of a quadrupole magnet array are derived. Each magnet within the array is a current sheet with a current density proportional to the azimuthal angle 2/spl theta/ and the longitudinal periodicity (2m-1)/spl pi//L. Individual quadrupoles within the array are oriented in a way that maximizes the field
openaire   +2 more sources

Comparative Analysis of Chemical Constituents of Moringa oleifera Leaves from China and India by Ultra-Performance Liquid Chromatography Coupled with Quadrupole-Time-Of-Flight Mass Spectrometry

open access: yesMolecules, 2019
With the aim to discuss the similarities and differences of phytochemicals in Moringa oleifera leaves collected from China (CML) and India (IML) in mind, comparative ultra-performance liquid chromatography coupled with quadrupole-time-of-flight mass ...
Hongqiang Lin   +7 more
semanticscholar   +1 more source

Perturbative Approach to the Gravitational Lensing by a Non-spherically Distorted Compact Object

open access: yes, 2011
We investigate the gravitational lens effect caused by a non-spherically distorted compact object. The non-spherical property of the gravitational potential is modeled by a quadrupole moment. Under the assumption that the quadrupole contribution is small,
Alard   +14 more
core   +1 more source

Photoassociation of a cold atom-molecule pair: long-range quadrupole-quadrupole interactions [PDF]

open access: yes, 2010
The general formalism of the multipolar expansion of electrostatic interactions is applied to the calculation the potential energy between an excited atom (without fine structure) and a ground state diatomic molecule at large separations.
D. A. Varshalovich   +6 more
core   +4 more sources

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