63 Result(s)

Chapter and Conference Paper

Femtosecond Studies of Electrons in Water

We have measured the dynamics of an electron photoionized from a neutral water molecule. Our results suggest that the electron solvation dynamics can be viewed as an internal conversion process.

F. H. Long, Hong Lu, K. B. Eisenthal in Ultrafast Phenomena VII (1990)

Chapter and Conference Paper

Regularization and Feynman rules in noncovariant gauges

A regularization scheme for defining Feynman rules in the path-integral formalism is proposed. It is applied to pure abelian gauge theory and to obtaining regularized propagators in noncovariant gauges. The pr...

Su-Long Nyeo in Physical and Nonstandard Gauges (1990)

Chapter and Conference Paper

Supernova Remnants and Candidates in M33

Supernova remnants (SNRs) provide fundamental information about stellar evolution and the properties of the interstellar medium. The galactic sample of optical SNRs is large, but severely limited by obscuratio...

R. Chris Smith, Robert P. Kirshner, P. Frank Winkler, Knox S. Long… in Supernovae (1991)

Chapter and Conference Paper

Measurement and Analysis of ⁹⁸Mo(n,γ)⁹⁹Mo Reaction Cross Section

Neutron capture cross sections of ⁹⁸Mo have been measured relative to that of ¹⁹⁷Au for neutron energy from 29 to 1100 KeV, using the activation method. Neutrons were generated via the ⁷Li(p,n)⁷Be and T(p,n) ³He ...

Wang Chunhao, **a Yijun, Long **anguan… in Nuclear Data for Science and Technology (1992)

Chapter and Conference Paper

EUVE Observations of U Gem

We have observed U Gem during the peak and declining phases of a wide outburst in 1993 December with EUVE. At peak, U Gem was one of the brightest EUV sources in the sky. The spectrum of the source is complex. Fi...

Knox S. Long, Christopher W. Mauche, Paula Szkody, Janet A. Mattei in Cataclysmic Variables (1995)

Chapter and Conference Paper

Far Ultraviolet Observations of Dwarf Novae made with the Hopkins Ultraviolet Telescope

Observations with the Hopkins Ultraviolet Telescope on the Astro-1 and Astro-2 space shuttle missions have provided the first set of moderate (3 Å) resolution far ultraviolet (FUV) spectra of dwarf novae to in...

Knox S. Long in Cataclysmic Variables and Related Objects (1996)

Chapter and Conference Paper

Spectrally Resolved Maps of Optically Thick Accretion Disks

We report first results of the HST/FOS time-resolved, low-resolution spectroscopy of the eclipsing cataclysmic variable UX UMa, including multi-wavelength map** of its accretion disk in the ultraviolet region.

R. Baptista, K. Horne, I. Hubeny, K. Long… in Cataclysmic Variables and Related Objects (1996)

Chapter and Conference Paper

The EUVE Observations of Dwarf Novae

In the standard theory of dwarf novae in outburst, the boundary layer region between the inner edge of the accretion disk and the white dwarf surface radiates primarily in the extreme ultraviolet. Using EUVE, obs...

Knox S. Long in Astrophysics in the Extreme Ultraviolet (1996)

Chapter and Conference Paper

Some Anomalous Phenomena of ⁸⁷Rb Atoms Fluorescence in a Quadrupole Magnetic Field

We report an experimental observation of a decrease in fluorescence intensity near zero-field point in the present of quadrupole magnetic field when atom vapour is excited by a circularly polarized traveling l...

Q. Long, S. Y. Zhou, Y. Z. Wang in Frontiers of Laser Physics and Quantum Optics (2000)

Chapter and Conference Paper

On the way to Bose-Einstein Condensates in Optical and Electro-Magnetic Traps

We report in this paper some of our progress, including experimental work and proposals, in trap** and guiding atoms. A convenient method of measuring atomic density by studying the fluorescencce interferenc...

Q. Long, S. Y. Zhou, L. F. Xu, J. P. Yin… in Frontiers of Laser Physics and Quantum Opt… (2000)

Chapter and Conference Paper

Mössbauer Spectral Study of Two Layered Honeycomb Molecular Magnets: PPh₄Fe^IIFe^III(ox)₃ and NBu₄Fe^IIFe^III(ox)₃

The Mössbauer spectra of the layer ferrimagnets PPh₄Fe^IIFe^III(ox)₃ and NBu₄Fe^IIFe^III(ox)₃ have been measured between 1.9 and 315 K. The paramagnetic spectra exhibit both high-spin iron(II) and iron(III) doublets....

D. Hautot, P. Day, G. J. Long, F. Grandjean, J. Ensling… in Hyperfine Interactions (C) (2002)

Chapter and Conference Paper

Measuring the Galaxy Power Spectrum with Multiresolution Decomposition

Yaoquan Chu, **aoHu Yang, Long-Long Feng… in Statistical Challenges in Astronomy (2003)

Chapter and Conference Paper

Richtmyer-Meshkov Instability of a Multimode Interface Accelerated by a Toroidal Shock Wave

Richtmyer-Meshkov (RM) instability occurs when an initially perturbed interface separating two different fluids is impulsively accelerated by a shock wave. If the density gradient of the interface and the pres...

Tong Long, Ting Si, **sheng Luo in 29th International Symposium on Shock Waves 2 (2015)

Chapter and Conference Paper

The Research of Backward Deducing the Peak Frequency of Acoustic Emission Signals in Different Array

This chapter puts forward the formula to calculate the deducing frequency of acoustic emission source, and combines the theory of multi-agent multiple sensors with the acoustic emission technique. Through the ...

Feifei Long, Yang Song, Qiong Wang, Ruilong Dai… in Advances in Acoustic Emission Technology (2015)

Chapter and Conference Paper

An Automatic Precise Registration Method Based on the Relative Geometric Calibration Between Bands for Satellite Multi-spectral Image

A registration method for satellite multi-spectral image is proposed, which is based on the relative geometric calibration between bands. This method precisely calibrate the relative geometric distortion of re...

He Wei, Long **aoxiang, Yu **g, Zhang Chi in 3rd International Symposium of Space Optic… (2017)

Chapter and Conference Paper

DEM Simulation of Rubble Ice Accumulation in Front of Water Intake Area of Nuclear Power Plant

The study aims to simulate sea ice accumulation in water intake area of with discrete element method (DEM), which possesses bonding-breaking function and is based on GPU technique. In the simulation, we cons...

N. Xu, X. Long, Shunying Ji, X. Wang… in Proceedings of the 7th International Confe… (2017)

Chapter and Conference Paper

Progress on the ARIADNE Axion Experiment

The Axion Resonant InterAction Detection Experiment (ARIADNE) is a collaborative effort to search for the QCD axion using techniques based on nuclear magnetic resonance (Arvanitaki and Geraci, Phys Rev Lett 11...

H. Fosbinder-Elkins, C. Lohmeyer, J. Dargert… in Microwave Cavities and Detectors for Axion… (2018)

Chapter and Conference Paper

Overview of High-Precision Spectral Payload On-Orbit Radiometric Calibration

High-precision spectral payload during the track performance changes occur, and there for need to be calibrated by on-orbit radiation calibration technology. This paper describes several types of on-orbit radi...

Shaofan Tang, Long Chen, Huan Li, Zhi Jun Lu in 4th International Symposium of Space Optic… (2018)

Chapter and Conference Paper

Source Mass Characterization in the ARIADNE Axion Experiment

The Axion Resonant InterAction Detection Experiment (ARIADNE) is a collaborative effort to search for the QCD axion using nuclear magnetic resonance (NMR), where the axion acts as a mediator of spin-dependent ...

Chloe Lohmeyer, N. Aggarwal, A. Arvanitaki… in Microwave Cavities and Detectors for Axion… (2020)

Chapter and Conference Paper

Modelling Pedestrian Social Group Passing Strategy with Expression-Matrix and Social Force

Our experiments and studies in recent years have shown that the complex pedestrian social group has a hierarchical structure. Small pedestrian groups of 2–3 people are simple groups with stable and straightfor...

Long Liu, Yuan Zhao, **aolei Zou in Traffic and Granular Flow 2019 (2020)