5539-1.pdf
... here an explicit calculation of the σ transform of virtual Compton scattering on the quantum fluctuations of a lepton in QED at one-loop order [12], the same system which gives the Schwinger anomalous moment α/2π . This model has the advantage that it is Lorentz invariant, and thus it has the correc ...
... here an explicit calculation of the σ transform of virtual Compton scattering on the quantum fluctuations of a lepton in QED at one-loop order [12], the same system which gives the Schwinger anomalous moment α/2π . This model has the advantage that it is Lorentz invariant, and thus it has the correc ...
Kurek
... Note that in the theory of explicit Pauli term GDH s.r. is not valid, since there now exists a tree-level contribution to the Compton amplitude which cannot be reproduced by a dispersion relations using The degrees of freedom included in the theory (photons and spin ½ fermions in case of QED) High e ...
... Note that in the theory of explicit Pauli term GDH s.r. is not valid, since there now exists a tree-level contribution to the Compton amplitude which cannot be reproduced by a dispersion relations using The degrees of freedom included in the theory (photons and spin ½ fermions in case of QED) High e ...
Scattering maolecular physics
... Raman amplification can be obtained by using Stimulated Raman Scattering (SRS), which actually is a combination of a Raman process with stimulated emission. It is interesting for application in telecommunication fibers to amplify inside the standard material with low noise for the amplification pro ...
... Raman amplification can be obtained by using Stimulated Raman Scattering (SRS), which actually is a combination of a Raman process with stimulated emission. It is interesting for application in telecommunication fibers to amplify inside the standard material with low noise for the amplification pro ...
X-rays as a branch of optics A C Nobel Lecture, December 12, 1927
... Haga and Wind had estimated. But on the basis of the photometric measurements of Walter and Pohl’s plates by Koch12 using his new photoelectric microphotometer, Sommerfeld found13 that their photographs indicated an effective wavelength for hard X-rays of 4 Å, and for soft X-rays a wavelength measur ...
... Haga and Wind had estimated. But on the basis of the photometric measurements of Walter and Pohl’s plates by Koch12 using his new photoelectric microphotometer, Sommerfeld found13 that their photographs indicated an effective wavelength for hard X-rays of 4 Å, and for soft X-rays a wavelength measur ...
CHAPTER 23 The Interaction of Light with Matter: I
... at least one bound electron. At high (low) frequency, scattering is in the Thomson (Rayleigh) regime; at specific, intermediate frequencies, set by the transition energies of the atom/ion, resonant scattering dominates; the profiles are Lorentz profiles, and reflect the natural line broadening. The ...
... at least one bound electron. At high (low) frequency, scattering is in the Thomson (Rayleigh) regime; at specific, intermediate frequencies, set by the transition energies of the atom/ion, resonant scattering dominates; the profiles are Lorentz profiles, and reflect the natural line broadening. The ...
x-rays
... We utilize the x-rays produced by the electron microprobe for many research applications. There are other techniques, similar in some ways, that are worth discussing, that utilize x-rays for secondary x-ray fluorescence. Two in particular are: • XRF (X-Ray Fluorescence), where x-rays from a sealed t ...
... We utilize the x-rays produced by the electron microprobe for many research applications. There are other techniques, similar in some ways, that are worth discussing, that utilize x-rays for secondary x-ray fluorescence. Two in particular are: • XRF (X-Ray Fluorescence), where x-rays from a sealed t ...
x-rays
... We utilize the x-rays produced by the electron microprobe for many research applications. There are other techniques, similar in some ways, that are worth discussing, that utilize x-rays for secondary x-ray fluorescence. Two in particular are: • XRF (X-Ray Fluorescence), where x-rays from a sealed t ...
... We utilize the x-rays produced by the electron microprobe for many research applications. There are other techniques, similar in some ways, that are worth discussing, that utilize x-rays for secondary x-ray fluorescence. Two in particular are: • XRF (X-Ray Fluorescence), where x-rays from a sealed t ...
Laser Systems for Inverse Compton Scattering Gamma
... some of the shortcomings of passive detection, but it is poorly suited to stand-off detection and lacks isotopic specificity. Thus standoff detection of SNM would greatly benefit from the use of active, nuclear-specific interrogation techniques. One approach is to use highly penetrating gamma-rays ( ...
... some of the shortcomings of passive detection, but it is poorly suited to stand-off detection and lacks isotopic specificity. Thus standoff detection of SNM would greatly benefit from the use of active, nuclear-specific interrogation techniques. One approach is to use highly penetrating gamma-rays ( ...
CV Raman Life and Work
... corresponds to their fluctuations from that state, it would follow that we should expect also in the case of ordinary light two types of scattering, one determined by the normal optical properties of the atoms or molecules, and another representing the effect of their fluctuations from their normal ...
... corresponds to their fluctuations from that state, it would follow that we should expect also in the case of ordinary light two types of scattering, one determined by the normal optical properties of the atoms or molecules, and another representing the effect of their fluctuations from their normal ...
The emergence of the Planck scale
... Indeed given the pion mass, one can verify from Eq. (6) that L 1028 cm which is the radius of the universe, R. Remembering that R c=H , Eq. (6) in fact gives back the supposedly mysterious and ad hoc Weinberg formula, relating the Hubble constant to the pion mass [22]. This provides a justi®cati ...
... Indeed given the pion mass, one can verify from Eq. (6) that L 1028 cm which is the radius of the universe, R. Remembering that R c=H , Eq. (6) in fact gives back the supposedly mysterious and ad hoc Weinberg formula, relating the Hubble constant to the pion mass [22]. This provides a justi®cati ...
More Graviton Physics
... and Lense-Thirring frame dragging—associated with general relativity which have recently been verified by gravity probe B [2]. However, despite these parallels, examination of quantum mechanics texts reveals that (with one exception [3]) the case of graviton interactions is not discussed in any deta ...
... and Lense-Thirring frame dragging—associated with general relativity which have recently been verified by gravity probe B [2]. However, despite these parallels, examination of quantum mechanics texts reveals that (with one exception [3]) the case of graviton interactions is not discussed in any deta ...
Born approximation - BYU Physics and Astronomy
... A. The scattering of electrons by matter B. The scattering of high energy photon by light atoms C. The scattering of low energy photons by heavy atoms D. The scattering of lo energy neutrons by electrons E. The scattering of high energy electrons by matter ...
... A. The scattering of electrons by matter B. The scattering of high energy photon by light atoms C. The scattering of low energy photons by heavy atoms D. The scattering of lo energy neutrons by electrons E. The scattering of high energy electrons by matter ...
Determination of photon mass from Compton scattering
... scattered X rays from a foil and found that the scattered radiation supported the idea that there exist quanta of energy and momentum in electromagnetic radiation of any frequency. At that point the idea of photon mass should have been tested with data from Compton scattering, now a routine undergra ...
... scattered X rays from a foil and found that the scattered radiation supported the idea that there exist quanta of energy and momentum in electromagnetic radiation of any frequency. At that point the idea of photon mass should have been tested with data from Compton scattering, now a routine undergra ...
THE DETERMINATION OF PHOTON MASS
... century, Planck and Einstein introduced the concept of the photon, the quantum of light energy. It was proposed by Einstein and others, notably in about 1906, that the photon has mass. This concept was extended by de Broglie in 1922 - 1924 {1, 2} to the idea of a photon with momentum, and the quantu ...
... century, Planck and Einstein introduced the concept of the photon, the quantum of light energy. It was proposed by Einstein and others, notably in about 1906, that the photon has mass. This concept was extended by de Broglie in 1922 - 1924 {1, 2} to the idea of a photon with momentum, and the quantu ...
X-ray photon pairs with highly suppressed background
... the most important applications of PDC in the optical regime is as a source for the generation of nonclassical states of light, such as entangled photons and squeezed light [1]. The extension of quantum optics into the x-ray regime would open new possibilities for research that would most-likely gai ...
... the most important applications of PDC in the optical regime is as a source for the generation of nonclassical states of light, such as entangled photons and squeezed light [1]. The extension of quantum optics into the x-ray regime would open new possibilities for research that would most-likely gai ...
Physics 451 - BYU Physics and Astronomy
... A. The scattering of electrons by matter B. The scattering of high energy photon by light atoms C. The scattering of low energy photons by heavy atoms D. The scattering of lo energy neutrons by electrons E. The scattering of high energy electrons by matter ...
... A. The scattering of electrons by matter B. The scattering of high energy photon by light atoms C. The scattering of low energy photons by heavy atoms D. The scattering of lo energy neutrons by electrons E. The scattering of high energy electrons by matter ...
Physics 2170
... Compton effect We know that X-rays are just a part of the EM wave spectrum. In 1923 Compton published results showing that X-rays also behave like particles and that these photons have momentum. In classical theory, an EM wave striking a free electron should cause the electron to oscillate at the E ...
... Compton effect We know that X-rays are just a part of the EM wave spectrum. In 1923 Compton published results showing that X-rays also behave like particles and that these photons have momentum. In classical theory, an EM wave striking a free electron should cause the electron to oscillate at the E ...
Problem: relativistic proton
... Recall that KEmax=hf - φ. This can be used to solve for φ. First find the kinetic energy ...
... Recall that KEmax=hf - φ. This can be used to solve for φ. First find the kinetic energy ...
27-4 Photons Carry Momentum
... One of the key pieces of evidence supporting the photon model of light is an experiment involving light interacting with matter. When light of a particular frequency is incident on matter, the light can change both direction and frequency. The shift in frequency cannot be explained in terms of the w ...
... One of the key pieces of evidence supporting the photon model of light is an experiment involving light interacting with matter. When light of a particular frequency is incident on matter, the light can change both direction and frequency. The shift in frequency cannot be explained in terms of the w ...
Modern physics
... to the frequency of the light, but does not depend on its intensity Compton effect was of great historical importance because it confirmed that photons are real particles with momentum as well as energy. Collisions between the energetic quanta of radiation and electrons obey relativistic energy and ...
... to the frequency of the light, but does not depend on its intensity Compton effect was of great historical importance because it confirmed that photons are real particles with momentum as well as energy. Collisions between the energetic quanta of radiation and electrons obey relativistic energy and ...
Chapter 27
... Each photon can give all its energy to an electron in the metal The maximum kinetic energy of the liberated photoelectron is KEmax = hƒ – Φ Φ is called the work function of the metal ...
... Each photon can give all its energy to an electron in the metal The maximum kinetic energy of the liberated photoelectron is KEmax = hƒ – Φ Φ is called the work function of the metal ...
chapter27
... Each photon can give all its energy to an electron in the metal The maximum kinetic energy of the liberated photoelectron is KEmax = hƒ – Φ Φ is called the work function of the metal ...
... Each photon can give all its energy to an electron in the metal The maximum kinetic energy of the liberated photoelectron is KEmax = hƒ – Φ Φ is called the work function of the metal ...
Arthur Compton
Arthur Holly Compton (September 10, 1892 – March 15, 1962) was an American physicist who won the Nobel Prize in Physics in 1927 for his discovery of the Compton effect, which demonstrated the particle nature of electromagnetic radiation. It was a sensational discovery at the time: the wave nature of light had been well-demonstrated, but the idea that light had both wave and particle properties was not easily accepted. He is also known for his leadership of the Manhattan Project's Metallurgical Laboratory, and served as Chancellor of Washington University in St. Louis from 1945 to 1953.In 1919, Compton was awarded one of the first two National Research Council Fellowships that allowed students to study abroad. He chose to go to Cambridge University's Cavendish Laboratory in England, where he studied the scattering and absorption of gamma rays. Further research along these lines led to the discovery of the Compton effect. He used X-rays to investigate ferromagnetism, concluding that it was a result of the alignment of electron spins, and studied cosmic rays, discovering that they were made up principally of positively charged particles.During World War II, Compton was a key figure in the Manhattan Project that developed the first nuclear weapons. His reports were important in launching the project. In 1942, he became head of the Metallurgical Laboratory, with responsibility for producing nuclear reactors to convert uranium into plutonium, finding ways to separate the plutonium from the uranium and to design an atomic bomb. Compton oversaw Enrico Fermi's creation of Chicago Pile-1, the first nuclear reactor, which went critical on December 2, 1942. The Metallurgical Laboratory was also responsible for the design and operation of the X-10 Graphite Reactor at Oak Ridge, Tennessee. Plutonium began being produced in the Hanford Site reactors in 1945.After the war, Compton became Chancellor of Washington University in St. Louis. During his tenure, the university formally desegregated its undergraduate divisions, named its first female full professor, and enrolled a record number of students after wartime veterans returned to the United States.