Acoustooptic interaction of two light beams in a paratellurite crystal
... We performed an experimental investigation on a paratellurite AO cell where a slow shear acoustic wave was excited by a piezoelectric transducer made from xcut lithium niobate. The calculation has shown that, when the length of the piezoelectric transducer is l = 1.4 cm and the ultrasonic frequency ...
... We performed an experimental investigation on a paratellurite AO cell where a slow shear acoustic wave was excited by a piezoelectric transducer made from xcut lithium niobate. The calculation has shown that, when the length of the piezoelectric transducer is l = 1.4 cm and the ultrasonic frequency ...
Universal diffraction of atoms and molecules from a quantum
... wavelength will be quantum-reflected at different heights above the surface, but their wave functions will acquire the same phase shift F. This peculiarity of quantum reflection is the origin of universal (interactionindependent) diffraction. To check this prediction of universal behavior, we repeat ...
... wavelength will be quantum-reflected at different heights above the surface, but their wave functions will acquire the same phase shift F. This peculiarity of quantum reflection is the origin of universal (interactionindependent) diffraction. To check this prediction of universal behavior, we repeat ...
Quantum collision theory with phase-space distributions
... Over the years, several authors noted the possibility of expressing potential scattering cross sections in tenns of Wigner functions (Irving and Zwanzig, 1951; Ross and Kirkwood, 1954; Mori, Oppenheim, and Ross, 1962; Huguenin, 1973; Prugoveeki, 1978a). However, the principal interest in these years ...
... Over the years, several authors noted the possibility of expressing potential scattering cross sections in tenns of Wigner functions (Irving and Zwanzig, 1951; Ross and Kirkwood, 1954; Mori, Oppenheim, and Ross, 1962; Huguenin, 1973; Prugoveeki, 1978a). However, the principal interest in these years ...
P approximation for reflectance imaging with an oblique beam of arbitrary profile 1
... We first compared the calculated reflectance images obtained according to Eqs. 共13兲 and 共16兲 for an incident beam at varying 0. The beam profile I0共 , 兲 was first assumed to be circular with a top-hat profile of radius w = 12.5 mm, i.e., I0共 , 兲 = Imax for 艋 w and 0 otherwise. For this case w ...
... We first compared the calculated reflectance images obtained according to Eqs. 共13兲 and 共16兲 for an incident beam at varying 0. The beam profile I0共 , 兲 was first assumed to be circular with a top-hat profile of radius w = 12.5 mm, i.e., I0共 , 兲 = Imax for 艋 w and 0 otherwise. For this case w ...
Jack Steinberger - Nobel Lecture
... not possible. The quark model makes definite predictions for neutrinohadron scattering, which are beautifully confirmed experimentally. Many of the predictions rest on the fact that now the kinematical variable x takes on a physical meaning: it can be interpreted as the fraction of the nucleon momen ...
... not possible. The quark model makes definite predictions for neutrinohadron scattering, which are beautifully confirmed experimentally. Many of the predictions rest on the fact that now the kinematical variable x takes on a physical meaning: it can be interpreted as the fraction of the nucleon momen ...
Invitation to Elementary Particles
... Special Relativity dethroned the mass conservation law. The energy stored in the form of mass can be transformed into kinetic energy and vice versa. This is in accordance with the observed phenomenon that the identities and the quantities of particles can be changed in their mutual interactions. Thi ...
... Special Relativity dethroned the mass conservation law. The energy stored in the form of mass can be transformed into kinetic energy and vice versa. This is in accordance with the observed phenomenon that the identities and the quantities of particles can be changed in their mutual interactions. Thi ...
Scattering of inhomogeneous circularly polarized optical field and
... of transverse light pressure [12]. At the same time, although the SFD’s ability to cause translation or orbital motion of particles has been proved both by simulation [26] and in experiment [32,33], the physical nature of this effect cannot be understood based on the existing model of the SFD origin ...
... of transverse light pressure [12]. At the same time, although the SFD’s ability to cause translation or orbital motion of particles has been proved both by simulation [26] and in experiment [32,33], the physical nature of this effect cannot be understood based on the existing model of the SFD origin ...
Lattice dynamics and magnetic properties in selected functional iron
... temperature, is higher as that of FeO. Fundamental studies are necessary in order to explain the mechanism responsible for an increase of the transition temperature and may provide a general conclusion for similar materials. The magnetocaloric material MnFe4 Si3 exhibits only a moderate magnetocalor ...
... temperature, is higher as that of FeO. Fundamental studies are necessary in order to explain the mechanism responsible for an increase of the transition temperature and may provide a general conclusion for similar materials. The magnetocaloric material MnFe4 Si3 exhibits only a moderate magnetocalor ...
PPT-IIa - Laboratory for Remote Sensing Hydrology and Spatial
... volumetric element per unit of time. The number of photons absorbed by molecules in the volumetric element per unit of time is thus expressed as mC dN ( x) N ( x dx) N ( x) N ( x) dx dAdx ...
... volumetric element per unit of time. The number of photons absorbed by molecules in the volumetric element per unit of time is thus expressed as mC dN ( x) N ( x dx) N ( x) N ( x) dx dAdx ...
Optical fibres solutions
... index of the material that the fibre is in (usually air, 1.00). Since the refractive index is now 1.33 the acceptance angle will decrease. Note you could have calculated these two values and seen the decrease. For Air n 0 Sin a n 1 2 n 2 2 ...
... index of the material that the fibre is in (usually air, 1.00). Since the refractive index is now 1.33 the acceptance angle will decrease. Note you could have calculated these two values and seen the decrease. For Air n 0 Sin a n 1 2 n 2 2 ...
Detennining the Phase Diagra1n and Aggregate Size of a Chro1nonic Liquid Crystal J
... only monomers exist, and the total number of monomers increases linearly with 1J. (Although the above plot shows the volume fraction of monomers increasing linearly with 1J, the total number of monomers also increases linearly with 1J since the volume fraction is proportional to the total number.) O ...
... only monomers exist, and the total number of monomers increases linearly with 1J. (Although the above plot shows the volume fraction of monomers increasing linearly with 1J, the total number of monomers also increases linearly with 1J since the volume fraction is proportional to the total number.) O ...
Cold interactions between an Yb ion and a Li atom
... coupled cluster method restricted to single, double, and noniterative triple excitations [RCCSD(T)] [31]. Calculations of all other excited states employ the linear-response theory (equation of motion) within the coupled cluster singles, doubles, and linear triples framework (LRCC3) [32,33]. The bas ...
... coupled cluster method restricted to single, double, and noniterative triple excitations [RCCSD(T)] [31]. Calculations of all other excited states employ the linear-response theory (equation of motion) within the coupled cluster singles, doubles, and linear triples framework (LRCC3) [32,33]. The bas ...
Mobility Modeling
... where E is the parallel electric field and µn0 and µp0 are the low field electron and hole mobilities respectively. The low field mobilities are either set explicitly on the MOBILITY statement or calculated by one of the low field mobility models. The model parameters β n = 2 (BETAN) and β p = 1 (BE ...
... where E is the parallel electric field and µn0 and µp0 are the low field electron and hole mobilities respectively. The low field mobilities are either set explicitly on the MOBILITY statement or calculated by one of the low field mobility models. The model parameters β n = 2 (BETAN) and β p = 1 (BE ...
Thermal conductivity of individual silicon nanowires
... phonon group velocities would be significantly less than the bulk value. Molecular dynamics simulations9 have shown that, for wires of nanometer diameter, the thermal conductivities could be two orders of magnitude smaller than that of bulk silicon. However, to the best of our knowledge, no systemat ...
... phonon group velocities would be significantly less than the bulk value. Molecular dynamics simulations9 have shown that, for wires of nanometer diameter, the thermal conductivities could be two orders of magnitude smaller than that of bulk silicon. However, to the best of our knowledge, no systemat ...
A nanometer notch filter with high rejection and throughput
... perpendicular illumination and small input divergence, a maximum transmission T,,,- 80% and a minimum intensity in the reflected response function of - 15% with the remaining - 5% absorbed (coating absorptivity - 0.2% ) . The - 15% rejection ratio is much larger than that expected from error free pl ...
... perpendicular illumination and small input divergence, a maximum transmission T,,,- 80% and a minimum intensity in the reflected response function of - 15% with the remaining - 5% absorbed (coating absorptivity - 0.2% ) . The - 15% rejection ratio is much larger than that expected from error free pl ...
here.
... the cone with x-component of angular momentum equal to ~m x as −~m x . So by symmetry we would expect the expectation value of L x in the state Ylm to vanish, as it does. It is important to realize that this cone does not tell us where the particle is likely to be found, it only gives some crude in ...
... the cone with x-component of angular momentum equal to ~m x as −~m x . So by symmetry we would expect the expectation value of L x in the state Ylm to vanish, as it does. It is important to realize that this cone does not tell us where the particle is likely to be found, it only gives some crude in ...
Absorbance Spectroscopy and Beer`s Law
... constantly jostling solvent molecules. Thus, each molecule/atom finds itself in a slightly different environment than its brothers. This causes the energy gap between the quantum states responsible for the absorbance of photons to be slightly different for each molecule/atom. This means we will have ...
... constantly jostling solvent molecules. Thus, each molecule/atom finds itself in a slightly different environment than its brothers. This causes the energy gap between the quantum states responsible for the absorbance of photons to be slightly different for each molecule/atom. This means we will have ...
Diffuse Reflectance Spectroscopy
... Nonlinear least-squares support vector machines (LS-SVM) regression technique within the Multivariate analysis (MVA) framework is employed in order to extract the optical properties of the tissue-like phantoms. Validation measurements of the liquid phantoms demonstrate a higher prediction accuracy f ...
... Nonlinear least-squares support vector machines (LS-SVM) regression technique within the Multivariate analysis (MVA) framework is employed in order to extract the optical properties of the tissue-like phantoms. Validation measurements of the liquid phantoms demonstrate a higher prediction accuracy f ...
B2.IV Nuclear and Particle Physics
... The discovery of the atomic nucleus within the atom had profound consequences. The implications were not initially obvious; indeed the pioneering New Zealand nuclear physicist, Ernst Rutherford, reportedly said that the idea of getting practical energy out of the atomic nucleus was ‘moonshine’.1 Lat ...
... The discovery of the atomic nucleus within the atom had profound consequences. The implications were not initially obvious; indeed the pioneering New Zealand nuclear physicist, Ernst Rutherford, reportedly said that the idea of getting practical energy out of the atomic nucleus was ‘moonshine’.1 Lat ...
Mechanical mapping with chemical specificity by confocal Brillouin
... stabilized against lateral drifts, which may occur during long time acquisitions. This is realized selecting a reference area within the illuminated region (through the red-yellow boxes in the figures) and using an image recognition software which supplies a feedback signal to the positioning stage. ...
... stabilized against lateral drifts, which may occur during long time acquisitions. This is realized selecting a reference area within the illuminated region (through the red-yellow boxes in the figures) and using an image recognition software which supplies a feedback signal to the positioning stage. ...
Full-Text PDF
... different values of Γ. It can be observed that the frequency at which Re(σ) drops can be blue shifted only by diminishing its low frequency (DC) value. We also notice that the Perfect Electric Conductor (PEC) condition (infinite Re(σ) in AC regime) cannot be recovered within this model by setting Γ ...
... different values of Γ. It can be observed that the frequency at which Re(σ) drops can be blue shifted only by diminishing its low frequency (DC) value. We also notice that the Perfect Electric Conductor (PEC) condition (infinite Re(σ) in AC regime) cannot be recovered within this model by setting Γ ...
Cross section (physics)
The cross section is an effective area that quantifies the intrinsic likelihood of a scattering event when an incident beam strikes a target object, made of discrete particles. The cross section of a particle is the same as the cross section of a hard object, if the probabilities of hitting them with a ray are the same. It is typically denoted σ and measured in units of area.In scattering experiments, one is often interested in knowing how likely a given event occurs. However, the rate depends strongly on experimental variables such as the density of the target material, the intensity of the beam, or the area of overlap between the beam and the target material. To control for these mundane differences, one can factor out these variables, resulting in an area-like quantity known as the cross section.