Influence of structural disorder on Raman scattering in amorphous
... the Bose factor. Let us consider first the case of the light scattering by the vibrations that form the boson peak. Since the vibrational density of states does not sufficiently change during the annealing19 the observed decrease of the boson peak amplitude can be explained only by the decrease of t ...
... the Bose factor. Let us consider first the case of the light scattering by the vibrations that form the boson peak. Since the vibrational density of states does not sufficiently change during the annealing19 the observed decrease of the boson peak amplitude can be explained only by the decrease of t ...
Band Gap Extraction from Individual Two
... The Journal of Physical Chemistry C all spectroscopy measurements, STEM mode was used with convergence and collection angles of 9.5 mrads each. For VEELS measurements a spectrometer dispersion of 0.02 eV/ channel was chosen whereas for the core-loss EELS measurements a dispersion of 0.2 eV/channel w ...
... The Journal of Physical Chemistry C all spectroscopy measurements, STEM mode was used with convergence and collection angles of 9.5 mrads each. For VEELS measurements a spectrometer dispersion of 0.02 eV/ channel was chosen whereas for the core-loss EELS measurements a dispersion of 0.2 eV/channel w ...
Experimental characterization of the optical fiber sensors Andrei Stancalie, Gelu Ilie
... the heating - cooling cycles. The purpose of this type of evaluation is to check the fidelity of Bragg sensors as temperature sensors, i.e. to investigate the stress impact on the sensor sensitivity. These measurements have also been done in the presence of a thermocouple of high sensitivity (under ...
... the heating - cooling cycles. The purpose of this type of evaluation is to check the fidelity of Bragg sensors as temperature sensors, i.e. to investigate the stress impact on the sensor sensitivity. These measurements have also been done in the presence of a thermocouple of high sensitivity (under ...
Effective Charge Transfer Distances in Cyanide
... small first derivative and only minor zeroth derivative contributions. Accordingly the relative error of the |∆µ| values reported in Table 1 is smaller than that of the ∆R values. For 2-4 the values of |∆µ| which were obtained from the comparison of the HOSS with the derivatives of the 2ω-Stark spec ...
... small first derivative and only minor zeroth derivative contributions. Accordingly the relative error of the |∆µ| values reported in Table 1 is smaller than that of the ∆R values. For 2-4 the values of |∆µ| which were obtained from the comparison of the HOSS with the derivatives of the 2ω-Stark spec ...
Introduction to Isotope Effect
... these basic nuclear constituents (proton and neutron) makes up for the ideal probe to obtain a detailed view of the internal structure. A very detailed analysis using the best available data has been carried out recently by Kelly [4]; these data originate from recoil or target polarizations experime ...
... these basic nuclear constituents (proton and neutron) makes up for the ideal probe to obtain a detailed view of the internal structure. A very detailed analysis using the best available data has been carried out recently by Kelly [4]; these data originate from recoil or target polarizations experime ...
Observing the quantum behavior of light in an
... demonstrate the existence of a field requiring a quantum mechanical 共QM兲 description, one can be fairly certain that this experiment was carried out in the 1970s.5–7 While many such experiments have subsequently been performed, we know of very few that are well-suited for an undergraduate laboratory ...
... demonstrate the existence of a field requiring a quantum mechanical 共QM兲 description, one can be fairly certain that this experiment was carried out in the 1970s.5–7 While many such experiments have subsequently been performed, we know of very few that are well-suited for an undergraduate laboratory ...
Global-scale electron precipitation features seen in UV and X rays
... As the front chamber was turned off, or partly turned off, during the events of 1996, only X-ray measurements above 9.9 keV were available for this study. As most of the X rays were detected at energies from 9.9 to 19.7 keV, the images shown here are from that energy range. Only electrons above ≈10 ...
... As the front chamber was turned off, or partly turned off, during the events of 1996, only X-ray measurements above 9.9 keV were available for this study. As most of the X rays were detected at energies from 9.9 to 19.7 keV, the images shown here are from that energy range. Only electrons above ≈10 ...
A study of the structure and bonding of small aluminum oxide
... detachment wavelengths. For the higher photon energies, spectra are taken at 20 Hz with the vaporization laser off at every alternating shot for background subtraction. However, significant noise is still present for the 193 nm spectra at lower BEs due to the high noise levels present at this photon ...
... detachment wavelengths. For the higher photon energies, spectra are taken at 20 Hz with the vaporization laser off at every alternating shot for background subtraction. However, significant noise is still present for the 193 nm spectra at lower BEs due to the high noise levels present at this photon ...
The Energy Spectrum of Very High Energy Gamma Rays
... which utilizes ground-based Cherenkov detectors, has contributed substantially to our understanding of high energetic processes of the non-thermal Universe. A firm detection of TeV photons from a number of galactic and extragalactic sources has enabled detailed studies of intrinsic features of vario ...
... which utilizes ground-based Cherenkov detectors, has contributed substantially to our understanding of high energetic processes of the non-thermal Universe. A firm detection of TeV photons from a number of galactic and extragalactic sources has enabled detailed studies of intrinsic features of vario ...
42-Bertolucci_Sergio
... 3. Synchronization between LNGS and CERN A detailed description of the CERN and LNGS timing systems and their synchronizations, prepared for the 2011 campaign and used also in 2012, is given in ref. [6]. A schematic picture of the timing system layout, including all delays, is shown in the top part ...
... 3. Synchronization between LNGS and CERN A detailed description of the CERN and LNGS timing systems and their synchronizations, prepared for the 2011 campaign and used also in 2012, is given in ref. [6]. A schematic picture of the timing system layout, including all delays, is shown in the top part ...
2013 kcse westlands
... A convex mirror of focal length 21cm produces an image on its axis, 7cm away from the mirror. Calculate the position of the object. (2mks) ...
... A convex mirror of focal length 21cm produces an image on its axis, 7cm away from the mirror. Calculate the position of the object. (2mks) ...
Interference with correlated photons: Five quantum mechanics
... photon, where is the angular frequency of the light and k is the magnitude of its wave number in vacuum. The wave number k is related to the wavelength in vacuum by k ⫽2 /⫽ /c, where c is the speed of light. High detection efficiency of down-conversion photons is essential for our experimen ...
... photon, where is the angular frequency of the light and k is the magnitude of its wave number in vacuum. The wave number k is related to the wavelength in vacuum by k ⫽2 /⫽ /c, where c is the speed of light. High detection efficiency of down-conversion photons is essential for our experimen ...
Detectors for Quality Assurance in Hadrontherapy Departament de Fisica Doctoral Thesis
... results. The full-ring LYSO-MCP scanner has been shown to have a 57% higher sensitivity than the Gemini to a 70 cm long line source, a consequence of the increased depth (30 mm) of the LYSO crystals used in our design. An MRPC-PET scanner, after performing a sensitivity optimization of various param ...
... results. The full-ring LYSO-MCP scanner has been shown to have a 57% higher sensitivity than the Gemini to a 70 cm long line source, a consequence of the increased depth (30 mm) of the LYSO crystals used in our design. An MRPC-PET scanner, after performing a sensitivity optimization of various param ...
Gamma spectroscopy
Gamma-ray spectroscopy is the quantitative study of the energy spectra of gamma-ray sources, in such as the nuclear industry, geochemical investigation, and astrophysics. Most radioactive sources produce gamma rays, which are of various energies and intensities. When these emissions are detected and analyzed with a spectroscopy system, a gamma-ray energy spectrum can be produced. A detailed analysis of this spectrum is typically used to determine the identity and quantity of gamma emitters present in a gamma source, and is a vital tool in radiometric assay. The gamma spectrum is characteristic of the gamma-emitting nuclides contained in the source, just as in optical spectroscopy, the optical spectrum is characteristic of the material contained in a sample.