Chapter 7- Components of Optical Instruments
... Resonant fluorescence: Occurs when the fluoresced radiation is of the same wavelength as the absorbed radiation. Resonant fluorescence is the type that is used most often for quantitative analysis. Direct-line fluorescence: Occurs when an electron in an excited state emits radiation upon falling, to ...
... Resonant fluorescence: Occurs when the fluoresced radiation is of the same wavelength as the absorbed radiation. Resonant fluorescence is the type that is used most often for quantitative analysis. Direct-line fluorescence: Occurs when an electron in an excited state emits radiation upon falling, to ...
excited states
... • Deactivation processes involved in converting a substance from excited state to ground state: • the emission of heat, • activation of a chemical reaction or • emission of radiation of the same or a modified wavelength. • Forms of photoluminescence (luminescence after absorption) are fluorescence ( ...
... • Deactivation processes involved in converting a substance from excited state to ground state: • the emission of heat, • activation of a chemical reaction or • emission of radiation of the same or a modified wavelength. • Forms of photoluminescence (luminescence after absorption) are fluorescence ( ...
Electrons in Atoms
... • Because low energy systems are more stable than high energy systems, electrons in an • Atom Tend to assume the arrangement that gives the lowest possible energy. This is ...
... • Because low energy systems are more stable than high energy systems, electrons in an • Atom Tend to assume the arrangement that gives the lowest possible energy. This is ...
chapter 7
... electrons, they have much shorter "wavelength" than the electrons. Hence, the proton microscope achieves an even higher resolution compared to that of the electron microscope. 4. Electron X-ray microanalyzer. The purpose of this instrument is to provide information on the elemental composition of th ...
... electrons, they have much shorter "wavelength" than the electrons. Hence, the proton microscope achieves an even higher resolution compared to that of the electron microscope. 4. Electron X-ray microanalyzer. The purpose of this instrument is to provide information on the elemental composition of th ...
Atomic spectra
... and reach the collecting electrode. The collecting electrode is connected to a sensitive galvanometer and hence one can measure the current due to electrons reaching the collecting electrode. These electrons in travelling from the heater filament collide with the mercury atoms. By applying a small r ...
... and reach the collecting electrode. The collecting electrode is connected to a sensitive galvanometer and hence one can measure the current due to electrons reaching the collecting electrode. These electrons in travelling from the heater filament collide with the mercury atoms. By applying a small r ...
Electron Arrangement and Atomic Emission Spectra
... A light source that produces a line spectrum suggests that the source emits only certain discrete energies of visible light. AKA: discrete (or line) spectrum ...
... A light source that produces a line spectrum suggests that the source emits only certain discrete energies of visible light. AKA: discrete (or line) spectrum ...
Why spontaneous emission
... The light quanta has the peculiarity that it apparently ceases to exist when it is in one of its stationary states, namely the zero state….When a light quanta is absorbed it is said to jump into this zero state and when one is emitted it can be considered to jump from the zero state to one in which ...
... The light quanta has the peculiarity that it apparently ceases to exist when it is in one of its stationary states, namely the zero state….When a light quanta is absorbed it is said to jump into this zero state and when one is emitted it can be considered to jump from the zero state to one in which ...
EE 230: Optical Fiber Communication Lecture 7
... means of pumping, the population density of level 2 is increased at the rate R2 while that of level 1 is decreased at the rate R1 For large DN or No (also called inversion density) We want t2 long, but t21 not too small, t1 and R1 large ...
... means of pumping, the population density of level 2 is increased at the rate R2 while that of level 1 is decreased at the rate R1 For large DN or No (also called inversion density) We want t2 long, but t21 not too small, t1 and R1 large ...
Observation of Collective Friction Forces due to Spatial Self
... a =2 5:7 GHz, limited only by the pump intensity needed to reach threshold. For blue pump-atom detunings up to a =2 2:5 GHz there is collective emission but no c.m. damping. Since the pump-atom detuning a is much larger than the atoms’ excited-state hyperfine splitting [Fig. 1(a)], the tra ...
... a =2 5:7 GHz, limited only by the pump intensity needed to reach threshold. For blue pump-atom detunings up to a =2 2:5 GHz there is collective emission but no c.m. damping. Since the pump-atom detuning a is much larger than the atoms’ excited-state hyperfine splitting [Fig. 1(a)], the tra ...
discrete spectra - Project PHYSNET
... a “continuum” since any energy state is possible for a free electron. ...
... a “continuum” since any energy state is possible for a free electron. ...
PHY 140A: Solid State Physics Solution to Homework #5
... as performing simple harmonic oscillations in three dimensions. The restoring forces in directions parallel to a layer are very large; hence the natural frequencies of oscillations in the x and y direction lying within the plane of a layer are both equal to a value ωk which is so large that h̄ωk À 3 ...
... as performing simple harmonic oscillations in three dimensions. The restoring forces in directions parallel to a layer are very large; hence the natural frequencies of oscillations in the x and y direction lying within the plane of a layer are both equal to a value ωk which is so large that h̄ωk À 3 ...
