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A molecular orbital method for inorganic molecules: application to
A molecular orbital method for inorganic molecules: application to

... neglect of inner orbitals cannot and should not be the same as those calculated from (1) in a full SCF-MO treatment, since the off -diagonal elements connecting valence and core orbitals are not necessarily zero, as can be seen from (15). The quantities which, essentially, eq 17 will be used to comp ...
Distribution of Atomic Ionization Potentials
Distribution of Atomic Ionization Potentials

IOSR Journal of Applied Physics (IOSR-JAP)
IOSR Journal of Applied Physics (IOSR-JAP)

... Structural and UV-Vis absorption studies of Alkaline Earth Zinc Bismuth Borate Glasses Doped ….. where Eg, is the optical band gap, and 'r' is the index which has different values (2, 3, l/2 and 1/3) corresponding to indirect allowed, indirect forbidden, direct allowed and direct forbidden transiti ...
CHEM1611 Worksheet 2: Atomic Accountancy Model 1
CHEM1611 Worksheet 2: Atomic Accountancy Model 1

... 6. Fill in the missing electron configuration and box representations for Be, N, Ne, Al, Cl. 7. Why do you think we use the [X] substitution to shorten the electronic configuration (where [X] represents the electron configuration of the noble gas immediately before the element in question)? What is ...
Atomic Structure: Chapter 5 Chapter Outline Chapter Outline
Atomic Structure: Chapter 5 Chapter Outline Chapter Outline

Practice exam - Dynamic Science
Practice exam - Dynamic Science

... Atom “Y” will give one electron away. Atom “Y” will take one electron away. Atom “Y” will share one electron with another atom. Atom “Y” will share two electrons with another atom. ...
Exam #3
Exam #3

... arrived at a particular answer is MORE important than the answer itself! Circle your final answer to numerical questions. The entire exam is worth a total of 150 points. Attached are a periodic table and a formula sheet jam-packed with useful stuff. Good Luck! ...
Determination of bandwidth and beamwidth of a
Determination of bandwidth and beamwidth of a

... 2.4 Littrow scheme The fully reflective mirror of the resonator was replaced by a grating (Fig. 3) which was placed such that the 0th order reflection was tilted back towards the dye cell. Turning the grating in both possible directions on each threshold the spectra were recorded by so determining t ...
Experimental Satellite Quantum Communications
Experimental Satellite Quantum Communications

Active teleportation of a quantum bit
Active teleportation of a quantum bit

... by equal pinholes with diameter 0.5 mm placed at a distance of 50 cm from the NL crystal. Of course, the product state condition of each SPDC pair, 兩 ⌽ 典 out ⫽ 兩 1 典 A 丢 兩 1 典 S , did not imply any mutual nonlocal correlation between the particles. Indeed for our purpose the particles could have bee ...
Fundamentals of Optical Interferometry for Thermal Expansion
Fundamentals of Optical Interferometry for Thermal Expansion

... changes in the speed of light [1]. Since then the development of lasers, solid state electronics, high speed photodetectors, CCD cameras and computerized data acquisition systems have considerably improved the versatility, range and resolution of interferometers, allowing a wide variety of applicati ...
Temporal Multimode Storage of Entangled Photon Pairs
Temporal Multimode Storage of Entangled Photon Pairs

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Lecture 1(2) -Sources in diagnostic Rad.– Fluoroscopy - gnssn

... All fluoroscopic units: • shall display the instantaneous values of x-ray tube voltage (kV peak), tube current (mA) and accumulated fluoroscopic exposure time at the control or to the user. • should be provided with a Dose-Area Product metre or a measuring system to indicate patient exposure. • The ...
Coherence - Studentportalen
Coherence - Studentportalen

... By controlling the e-beam, i.e., its energy, time structure and emittance, and forcing it to move in specific patterns by magnetic field structures, we have seen that we can vary the properties of the synchrotron radiation in a wide range, including: ...
Young`s Double Slits
Young`s Double Slits

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Two-Electron Energy Spectrum in Concentric Quantum Ribbons
Two-Electron Energy Spectrum in Concentric Quantum Ribbons

... physical effects in two dimensional ribbons with cylindrical symmetry, in this work, we propose to analyze the energy spectrum of two particles, spatially separated in two cylindrical quantum ribbons. Nanostructures concentrically coupled, have been previously studied[9] in ring-shaped quantum dots ...
Slide 1
Slide 1

... GHZ and Bell’s theorem In 1935, after failing for years to defeat the uncertainty principle, Einstein argued that quantum mechanics is incomplete. Note that [x, ˆp] ≠ 0, but [x2–x1, pˆ 2+pˆ 1] = [x2, pˆ 2] – [x1, pˆ1] = 0. That means we can measure the distance between two particles and their total ...
CHM 1025 Chapter 9 web
CHM 1025 Chapter 9 web

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... metal nanoparticles19 and Bose–Einstein condensates20 . Furthermore, close to the centre singularity, the ray picture fails and one cannot trust the predictions as per Fig. 1b,c. However, experimental observation of the main optical phenomena related to systems such as PBH or gravitational black hol ...
Observing Angular Deviations in the Specular Reflection of a Light
Observing Angular Deviations in the Specular Reflection of a Light

... laser pulses in transparent media.1,2 Applications range from terahertz generation to lightning control. When an ultra-intense, ultra-short laser pulse propagates in air, the defocusing effect of the plasma generated via multi-photon ionization dynamically balances the self-focusing of the beam and ...
1-Three states of matter . A: density, volume and weight B: solid
1-Three states of matter . A: density, volume and weight B: solid

... Non-polar molecular crystals are very soft and are soluble in non-polar solvents. Non-polar molecular crystals are formed from symmetrical molecules with covalent bonds between atoms with small electronegativity differences. ...
Breakup and Fusion of Self-Guided Femtosecond Light Pulses in Air
Breakup and Fusion of Self-Guided Femtosecond Light Pulses in Air

... known to form robust light guides over very long distances [2–4]. Various attempts in modeling this phenomenon have been proposed, by solving nonlinear Schrödingerlike systems [5–9]. Basically, an input beam having a transverse power, Pin , far above the threshold power for self-focusing, Pcr , firs ...
CHEM763 Special Topics for 2016 - UKZN Chemistry and Physics
CHEM763 Special Topics for 2016 - UKZN Chemistry and Physics

Δk/k
Δk/k

... Classically, the nitrogen atom must stay forever in its potential well | 1 or | 2 . Quantum mechanically, the nitrogen atom can go from one state to the other, because its wavefunctions | 1 or | 2 penetrate the classically forbidden regions. We know this from the case of the harmonic oscillator. ...
Chapter 10 Physics of Electrons
Chapter 10 Physics of Electrons

... In 1913, Bohr proposed a new model, assuming that the angular momentum is quantized and must be an integer multiple of h/2. He postulated that an electron in an atom can revolve in certain stable orbits, each having a definite associated energy, without emitting radiation. Bohr’s model was successf ...
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X-ray fluorescence



X-ray fluorescence (XRF) is the emission of characteristic ""secondary"" (or fluorescent) X-rays from a material that has been excited by bombarding with high-energy X-rays or gamma rays. The phenomenon is widely used for elemental analysis and chemical analysis, particularly in the investigation of metals, glass, ceramics and building materials, and for research in geochemistry, forensic science and archaeology.
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