A program for SAXS data processing and analysis

Li, Zhi Hong

doi:10.1088/1674-1137/37/10/108002

Cited by 136 publications

(91 citation statements)

References 24 publications

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“…The specific surface area (S SAXS ) from SAXS data can be obtained by the Porod’s law and the invariant (Fig. S4)32. The results show that the S SAXS of FPC and VFPC are 2870 and 3125 m 2 g −1 , respectively.…”

Section: Resultsmentioning

confidence: 99%

“…Irregular geometric structures are also characteristics of the samples, which can be quantified by the fractal analysis with SAXS method32. The SAXS intensity from fractal samples obeys a power-law form, I = I 0 q −α , where α can be used to determine the fractal type and dimensions (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…The SAXS intensity from fractal samples obeys a power-law form, I = I 0 q −α , where α can be used to determine the fractal type and dimensions (Fig. S5)32. The analysis shows two types of fractal structures in the samples, porous fractal and surface fractal.…”

Section: Resultsmentioning

confidence: 99%

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MOF-derived multifractal porous carbon with ultrahigh lithium-ion storage performance

Yan

Cao

et al. 2017

Sci Rep

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Porous carbon is one of the most promising alternatives to traditional graphite materials in lithium-ion batteries. This is not only attributed to its advantages of good safety, stability and electrical conductivity, which are held by all the carbon-based electrodes, but also especially ascribed to its relatively high capacity and excellent cycle stability. Here we report the design and synthesis of a highly porous pure carbon material with multifractal structures. This material is prepared by the vacuum carbonization of a zinc-based metal-organic framework, which demonstrates an ultrahigh lithium storage capacity of 2458 mAh g−1 and a favorable high-rate performance. The associations between the structural features and the lithium storage mechanism are also revealed by small-angle X-ray scattering (SAXS), especially the closed pore effects on lithium-ion storage.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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MOF-derived multifractal porous carbon with ultrahigh lithium-ion storage performance

Yan

Cao

et al. 2017

Sci Rep

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“…2.1 Requirement of calibration precision LHAASO-WCDA requires that the radiation direction reconstruction error is better than 0.1 • [6]. Assuming that 1) in 36 (6×6) detector cells (called a cluster), 20 detector units are triggered by a low energy shower; 2) the time offsets between the average value of the calibration unit error is dT; 3) the distance between the detector and shower axis is L = 7.5 m for geometric assumptions, then dT must satisfy:…”

Section: Time Calibration Systemmentioning

confidence: 99%

The time calibration system for the LHAASO-WCDA experiment

Gao¹,

Chen²,

Yao³

et al. 2017

Proceedings of 35th International Cosmic Ray Conference — PoS(ICRC2017)

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The Water Cherenkov Detector Array (WCDA), which is one of the main components of the Large High Altitude Air Shower Observatory (LHAASO), functions as surveying the northern sky for high-energy gamma ray sources at the energy range around 100 GeV-30 TeV. The precision of the time measurement for shower particles hitting every detector in the array directly associates the detection sensitivity for the sources. In order to make the pointing error of the detector to any point source less than 0.1 • , the calibration precision of the time offsets among detector cells should be less than 0.2 ns. To reach this goal, a method called "cross calibration" is to be employed for the detector array, with 180 bundles of fiber systems guiding the lights of LEDs to each PMT. A prototype of the time calibration system is developed, which is based on a fast LED, a plastic fiber bundle and an FPGA control board. The prototype is tested in the lab and the error propagation based on the measured parameters shows that it fulfills the requirement.

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“…It can be seen that there is a positive deviation from Porod's law. According to Li et al [16] and Li [25], this positive deviation means that the electron density changes abruptly in the Al-matrix melt and there is a sharp boundary rather than a diffuse interface layer between Bi-rich droplets and Al-matrix melt. So we think that the LPSP occurs as the nucleation of Bi-rich droplets directly from the supersaturated Al-matrix melt rather than a homogeneous spinodal reaction.…”

Section: Occurrence Mechanism Of the Liquid Phase Separationmentioning

confidence: 99%

In situsynchrotron study of liquid phase separation process in Al-10 wt.% Bi immiscible alloys by radiography and small angle X-ray scattering

Zhang

2016

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. Liquid phase separation process of immiscible alloys has been repeatedly tuned to create special structure for developing materials with unique properties. However, the fundamental understanding of the liquid phase separation process is still under debate due to the characteristics of immiscible alloys in opacity and high temperature environment of alloy melt. Here, the liquid phase separation process in solidifying Al-Bi immiscible alloys was investigated by synchrotron radiography and small angle X-ray scattering. We provide the first direct evidence of surface segregation prior to liquid decomposition and present that the time dependence on the number of Bi droplets follows Logistic curve. The liquid decomposition results from a nucleation and growth process rather than spinodal decomposition mechanism because of the positive deviation from Porod's law. We also found that the nanometer-sized Bi-rich droplets in Al matrix melt present mass fractal characteristics.

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A program for SAXS data processing and analysis

Abstract: A computer program for small angle X-ray scattering (SAXS) data processing and analysis named S.exe written in Intel Visual Fortran has been developed. This paper briefly introduces its main theory and function.

Cited by 136 publications

References 24 publications

MOF-derived multifractal porous carbon with ultrahigh lithium-ion storage performance

MOF-derived multifractal porous carbon with ultrahigh lithium-ion storage performance

The time calibration system for the LHAASO-WCDA experiment

In situsynchrotron study of liquid phase separation process in Al-10 wt.% Bi immiscible alloys by radiography and small angle X-ray scattering

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