منابع مشابه
Electron cooling and debye-waller effect in photoexcited bismuth.
By means of first principles calculations, we compute the effective electron-phonon coupling constant G(0) governing the electron cooling in photoexcited bismuth. G(0) strongly increases as a function of electron temperature, which can be traced back to the semimetallic nature of bismuth. We also use a thermodynamical model to compute the time evolution of both electron and lattice temperatures...
متن کاملDebye - Waller factor in solid 3 He and 4
The Debye-Waller factor and the mean-squared displacement from lattice sites for solid He and He were calculated with path-integral Monte Carlo at temperatures between 5 and 35 K, and densities between 38 and 67 nm. It was found that the mean-squared displacement exhibits finite-size scaling consistent with a crossover between the quantum and classical limits of N and N, respectively. The tempe...
متن کاملDebye–Waller coefficient of heavily deformed nanocrystalline iron1
Synchrotron radiation X-ray diffraction (XRD) patterns from an extensively ball-milled iron alloy powder were collected at 100, 200 and 300 K. The results were analysed together with those using extended X-ray absorption fine structure, measured on the same sample at liquid nitrogen temperature (77 K) and at room temperature (300 K), to assess the contribution of static disorder to the Debye-Wa...
متن کاملDebye - Waller factor measurements of solid 3 He and 4
X-ray synchrotron radiation was used to measure Debye-Waller factors of helium crystals for both He and He in both hcp and fcc phases. To our knowledge, there are no previous measurements for He. The ranges studied for He and He crystals were 11.52–12.82 and 10.95–12.13 cm, respectively, and 11.5–18.2 and 12.0–20.3 K. With small uncertainty, only a Gaussian dependence upon momentum transfer Q w...
متن کاملFinite Debye-Waller factor for "classical" atom-surface scattering.
We consider atom-surface scattering at low surface temperature, fixed incident energy and fixed interaction potential. We examine the limit as the mass m of the incident particle -oc, and thus its de Broglie wavelength --* 0. We show that in this "classical" limit, the Debye-Waller factor (a quantum effect) for the strictly elastic scattering amplitude tends to a finite limit. We propose scatte...
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ژورنال
عنوان ژورنال: Microscopy and Microanalysis
سال: 2019
ISSN: 1431-9276,1435-8115
DOI: 10.1017/s1431927619008948