搜索结果: 1-15 共查到“地球物理学 x-ray”相关记录15条 . 查询时间(0.093 秒)
Slant total electron content for Sirio-Mortelliccio ray path
Total Electron Content ionosphere space weather satellite scale height
2015/9/8
The Total Electron Content (TEC) is used to indicate the ionisation of the ionosphere. TEC is a quantity that concern for predicting space weather effects on telecommunications, improving the accuracy...
2014年1月5日，应大地测量与地球动力学国家重点实验室的邀请，美国国家大地测量局Jim Ray博士访问中国科学院测量与地球物理研究所，并作题为Subseaconal GNSS Errors In IGS Products的学术报告。测地所主持工作副所长王勇研究员等20余名科研人员和研究生参加报告会。报告会由测地所副所长、大地测量与地球动力学国家重点实验室主任倪四道主持。
Pore formation during dehydration of a polycrystalline gypsum sample observed and quantified in a time-series synchrotron X-ray micro-tomography experiment
polycrystalline gypsum sample Pore formation
2015/1/4
We conducted an in-situ X-ray micro-computed
tomography heating experiment at the Advanced Photon
Source (USA) to dehydrate an unconfined 2.3 mm diameter
cylinder of Volterra Gypsum. We used ...
Pore formation during dehydration of a polycrystalline gypsum sample observed and quantified in a time-series synchrotron X-ray micro-tomography experiment
Pore formation during dehydration a polycrystalline gypsum sample time-series synchrotron X-ray micro-tomography experiment
2015/1/4
We conducted an in-situ X-ray micro-computed tomography heating experiment at the Advanced Photon Source (USA) to dehydrate an unconfined 2.3 mm diameter cylinder of Volterra Gypsum. We used a purpose...
Redox states of thirteen shergottites as inferred from iron micro X-ray absorption near edge structure of maskelynite
shergottite X-ray Absorption Near Edge Structure Mars maskelynite redox stat
2017/4/10
We used synchrotron radiation Fe micro-XANES (X-ray Absorption Near Edge Structure) analysis to determine the
iron valence of maskelynite (shocked-plagioclase glass) in thirteen shergottites, and we ...
Acoustic ray tracing in the atmosphere: with gravitational effect and attenuation considered
Acoustic ray tracing Dissipative dispersion relation Gravity effect Attenuation
2015/8/18
An acoustic ray tracing model is developed to take into account the impacts of gravitational field and realistic atmospheric attenuation. Ray tracing equations are deduced from the real part of the di...
Cosmic ray momentum diffusion in the presence of nonlinear Alfvén waves
Cosmic ray momentum diffusion nonlinear Alfvén waves
2009/11/16
The relation between the spatial diffusion coefficient along the magnetic field, kII, and the momentum diffusion coefficient, Dp, for relativistic cosmic ray particles is modelled using Monte Carlo si...
The formation of relativistic plasma structures and their potential role in the generation of cosmic ray electrons
relativistic plasma structures potential role cosmic ray electrons
2009/11/2
Recent particle-in-cell (PIC) simulation studies have addressed particle acceleration and magnetic field generation in relativistic astrophysical flows by plasma phase space structures. We discuss the...
Monte-Carlo simulation of a compact gamma-ray detector using wavelength-shifting fibers coupled to a YAP scintillation crystal
Monte-Carlo simulation WSF spatial resolution
2009/8/14
The production and transportation of fluorescent light produced in wavelength-shifting fibers (WSFs) coupled to YAP scintillation crystal is simulated using the GEANT4 codes. An advantage of the wavel...
Study of the energy response of high pressure ionization chamber for high energy gamma-ray
high pressure ionization chamber Fluka program energy response
2009/8/14
The energy response calibration of the commonly used high pressure ionization chamber is very difficult to obtain when the gamma-ray energy is more than 3 MeV. In order to get the calibration of the h...
On the Variations of Cosmic Ray ?-Meson Intensity During Rapid Pressure Variations and about the Applicability of Duperier's Model
Meson Intensity Variations
2009/6/18
On the Variations of Cosmic Ray ?-Meson Intensity During Rapid Pressure Variations and about the Applicability of Duperier's Model.
Some Aspects on Atmospheric Effects of the Cosmic Ray ?-Meson Intensity
Atmospheric Effects Meson Intensity
2009/6/18
Some Aspects on Atmospheric Effects of the Cosmic Ray ?-Meson Intensity.
Variations in the Geomagnetic Field and Auroral-Zone X-Ray Intensity in the Pi 1 Period Range
physics geomagnetism geophysics X-Ray
2009/6/18
Variations in the Geomagnetic Field and Auroral-Zone X-Ray Intensity in the Pi 1 Period Range.
Construction of Algorithms for Optimal Fermat Ray Tracing
The Cosmic Ray Asymptotic Directions for Station Oulu in the Magnetic Field of the Tsyganenko 1989 Model
cosmic rays magnetospheric magnetic field asymptotic directions geomagnetic disturbance level
2009/6/10
Using the magnetospheric field model developed by Tsyganenko (1989) the asymptotic directions
were calculated for cosmic ray particles entering the top of the atmosphere at Oulu (65.°06N, 25.°47E).Th...