搜索结果: 1-15 共查到“知识库 soft X-ray”相关记录19条 . 查询时间(0.075 秒)
Simulation of soft X-ray emission lines from the missing baryons
theory diff use radiation large-scale structure of universe
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2014/12/24
We study the soft X-ray emission (0.1-1 keV) from the warm-hot intergalactic medium (WHIM) in a hydrodynamic simulation of a cold dark matter universe. Our main goal is to investigate how such emissio...
Energy spectra of the soft X-ray diffuse emission in fourteen fields observed with Suzaku
disk halo
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2014/12/23
Energy spectra of the soft X-ray diffuse emission in fourteen fields observed with Suzaku.
Self-seeding scheme for the soft X-ray line at the European XFEL
Self-seeding scheme soft X-ray line the European XFEL
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2012/2/28
This paper discusses the potential for enhancing the capabilities of the European FEL in the soft X-ray regime. A high longitudinal coherence will be the key to such performance upgrade. In order to r...
XUV and Soft X-Ray Laser Radiation from Ni-Like Au
Atomic Structure Data Effective Collision Strengths Reduced Population Ni-Like Au
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2013/1/30
Atomic structure data and effective collision strengths from literature for 1s2 2s2 2p6 3s2 3p63d10 and 34 fine-structure levels contained in the configurations 1s2 2s2 2p6 3s2 3p63d9 4l (l = s, p, d)...
Intrinsic disc emission and the Soft X-ray Excess in AGN
X-rays: accretion discs black hole physics
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2011/10/18
Narrow Line Seyfert 1 (NLS1) galaxies have low mass black holes and mass accretion rates close to (or exceeding) Eddington, so a standard blackbody accretion disc should peak in the EUV. However, the ...
Multiwavelength campaign on Mrk 509. IV. Optical-UV-X-ray variability and the nature of the soft X-ray excess
galaxies: active – galaxies: nuclei – galaxies: Seyfert – quasars: individual: Mrk 509 – X-rays: galaxies
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2011/9/27
We present the analysis of XMM-Newton and Swift optical-UV and X-ray observations of the Seyfert-1/QSO Mrk 509, part of an unprecedented multi-wavelength campaign, investigating the nuclear environmen...
Circular polarization control for the European XFEL in the soft X-ray regime
XFEL Circular polarization European
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2011/8/31
The possibility of producing X-ray radiation with high degree of circular polarization is an important asset at XFEL facilities. Polarization control is most important in the soft X-ray region.However...
Soft Gamma-ray Detector for the ASTRO-H Mission
Soft Gamma-ray Detector the ASTRO-H Mission
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2011/1/10
ASTRO-H is the next generation JAXA X-ray satellite, intended to carry instruments with broad energy coverage and exquisite energy resolution. The Soft Gamma-ray Detector (SGD) is one of ASTRO-H instr...
Phase diagram of charge order in La1.8-xEu0.2SrxCuO4 from resonant soft x-ray diffraction
Phase diagram of charge order resonant soft x-ray diffraction
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2010/11/25
Resonant soft x-ray scattering experiments with photon energies near the O K and the Cu L3
edge on the system La1.8−xEu0.2SrxCuO4 for 0.1 x 0.15 are presented. A phase diagram
for stripe-l...
Local electronic structure of Fe$^{2+}$ impurities in MgO thin films: Temperature-dependent soft x-ray absorption spectroscopy study
Local electronic structure of Fe$^{2+}$ impurities Temperature-dependent soft x-ray absorption spectroscopy study
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2010/11/18
We report on the local electronic structure of Fe impurities in MgO thin films. Using soft x-ray absorption spectroscopy (XAS) we verified that the Fe impurities are all in the 2+ valence state.The fi...
Rare-gas clusters in intense VUV, XUV and soft x-ray pulses: Signatures of the transition from nanoplasma-driven cluster expansion to Coulomb explosion in ion and electron spectra
VUV XUV soft x-ray pulses
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2010/11/16
We investigate the wavelength dependent ionization, heating, and expansion dynamics of medium-sized rare-gas clusters (Ar$_{923}$) under intense femtosecond short-wavelength free electron laser pulse...
Transmission measurement of photo-absorption cross section of aluminum in soft X-ray region of 50 to 250eV
synchrotron radiation soft-X-ray aluminum thin-film photo-absorption cross section
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2009/8/13
The photo-absorption cross section of aluminum was obtained from the ratio of transmission of aluminum thin-films with different area densities from 50 to 250eV with synchrotron radiation monochromati...
Effects of Soft X-Ray Irradiation to Stage X Blastoderm on Restriction of Proliferation of Primordial Germ Cells in Early Chicken Embryos
chick embryo primordial germ cell soft X-ray stage X blastoderm
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2009/7/30
It is necessary to deplete the endogenous primordial germ cells (PGCs) from recipient embryos when germline chimaeric chickens are produced by the transfer of PGCs. In this study, effects of soft X-ra...
Restriction of Germline Proliferation by Soft X-ray Irradiation of Chicken Embryos and its Application to Chimera Production
blastoderm chimera embryo culture primordial germ cells soft x-ray
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2009/7/30
Primordial germ cells (PGCs) are the progenitor cells of gametes. Avian PGCs are located in the central region of the area pellucida at the blastoderm stage. PGCs enter the circulation soon after the ...
The big blue bump and soft X-ray excess of individual quasars
big blue bump individual quasars soft X-ray excess
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2009/7/9
The big blue bump and soft X-ray excess of individual quasars。