Implantation profile of Na22 continuous energy spectrum positrons in silicon

2007 ◽  
Vol 101 (4) ◽  
pp. 043702 ◽  
Author(s):  
P. J. Foster ◽  
P. Mascher ◽  
A. P. Knights ◽  
P. G. Coleman
Keyword(s):  
Energy Spectrum ◽  
Continuous Energy ◽  
Continuous Energy Spectrum ◽  
Implantation Profile

scholarly journals DILATON DECAYS INTO UNPARTICLES AND A SINGLE PHOTON

2011 ◽  
Vol 26 (23) ◽  
pp. 3987-3996 ◽  
Author(s):  
G. A. KOZLOV ◽  
I. N. GORBUNOV
Keyword(s):  
Higgs Boson ◽  
Energy Spectrum ◽  
Rare Decays ◽  
Momentum Distribution ◽  
Radiative Decay ◽  
Single Photon ◽  
Missing Energy ◽  
Continuous Energy ◽  
Continuous Energy Spectrum ◽  
Energy And Momentum

We study the production of the vector U-unparticle stuff and a single photon in decays of a dilaton. The signals of an unparticle can be detected through the missing energy and momentum distribution carried away by U once it was produced in radiative decay of a dilaton. The continuous energy spectrum of the emitted photons encoding the recoil unparticle can be measured in precision studies of rare decays of the dilaton or Higgs-boson after their discoveries.

Numerical simulation of proton generation with continuous energy spectrum by pulse voltage with discrete steps

2011 ◽  
Vol 23 (6) ◽  
pp. 1692-1696
Author(s):  
石经纬 Shi Jingwei ◽  
汪志健 Wang Zhijian ◽  
巩春志 Gong Chunzhi ◽  
田修波 Tian Xiubo ◽  
杨士勤 Yang Shiqin
Keyword(s):  
Numerical Simulation ◽  
Energy Spectrum ◽  
Pulse Voltage ◽  
Continuous Energy ◽  
Continuous Energy Spectrum ◽  
Proton Generation

scholarly journals A discussion on β -type of nuclear transmutations

1937 ◽  
Vol 161 (907) ◽  
pp. 447-460 ◽  
Keyword(s):  
Angular Momentum ◽  
Energy Spectrum ◽  
Energy Distribution ◽  
Rest Mass ◽  
Energy Difference ◽  
Maximum Energy ◽  
Energy Limit ◽  
Conservation Of Energy ◽  
Continuous Energy ◽  
Continuous Energy Spectrum

The most important and interesting feature of the β -ray disintegration is the energy distribution of the emitted electrons. It is now well established that these electrons form a continuous energy spectrum and that this fact is irreconcilable with the simultaneous validity of the conservation of energy and the principle of identity of atoms of the same species. Further, it seems highly probable, although it has not been conclusively proved, that the energy difference between the parent and product nucleus is determined by the upper energy limit of the continuous spectrum. No progress has yet been made by adopting either of the hypotheses that the conservation of energy or the principle of identity are not universally valid, although such would appear to be the natural interpretation of the experimental facts. Instead, a particle, the neutrino, has been invented which is thought to be emitted simultaneously with the β -particle. Whenever the β -particle is emitted with less than its maximum energy the neutrino carries away the remainder of the energy, allowing the total energy of disintegration in each case to be the same. Besides having no charge the neutrino is supposed to have the same spin as the electron, as this helps to conserve angular momentum in the disintegration. The detailed theory ascribes to it zero rest mass and a free path in matter so great that failure to detect any evidence of interac­tion between neutrino and matter is no argument against its existence. It is certainly true that if the principles of the conservation of energy and of identity be accepted as universally valid that the evidence, although circumstantial, for the existence of the neutrino is strong. Yet it must be remembered that it is precisely the validity of these principles which is in question. If clear experimental evidence for the existence of the neutrino could be obtained, then we should have conclusive proof of the validity of these principles; but until this happens the neutrino must remain purely hypothetical. It should also be emphasized that no amount of agreement between the resulting theory of β disintegration and experiment can help to a decision, since the properties of the neutrino are arbitrary.

scholarly journals Demystifying the spectral collapse in two-photon Rabi model

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
C. F. Lo
Keyword(s):  
Energy Spectrum ◽  
Bound States ◽  
Energy Levels ◽  
Scattering Problem ◽  
Critical Coupling ◽  
Discrete Energy ◽  
Two Photon ◽  
Continuous Energy ◽  
Rabi Model ◽  
Continuous Energy Spectrum

Abstract We have investigated the eigenenergy spectrum of the two-photon Rabi model at the critical coupling, particularly the special feature “spectral collapse”, by means of an elementary quantum mechanics approach. The eigenenergy spectrum is found to consist of both a set of discrete energy levels and a continuous energy spectrum. Each of these eigenenergies has a two-fold degeneracy corresponding to the spin degree of freedom. The discrete eigenenergy spectrum has a one-to-one mapping with that of a particle in a “Lorentzian function” potential well, and the continuous energy spectrum can be derived from the scattering problem associated with a potential barrier. The number of bound states available at the critical coupling is determined by the energy difference between the two atomic levels so that the extent of the “spectral collapse” can be monitored in a straightforward manner.

scholarly journals On formation of long-living states

2016 ◽  
Vol 94 (12) ◽  
pp. 1253-1258 ◽  
Author(s):  
Boris I. Ivlev
Keyword(s):  
Quantum Mechanics ◽  
Energy Spectrum ◽  
Quantum Electrodynamics ◽  
Potential Well ◽  
Continuous Energy ◽  
Elastic String ◽  
Continuous Energy Spectrum

The motion of a particle in a potential well is studied when the particle is attached to an infinite elastic string. This is generic with the problem of dissipative quantum mechanics investigated by Caldeira and Leggett (Ann. Phys. 149, 374 (1983). doi: 10.1016/0003-4916(83)90202-6 ). Besides the dissipative motion there is another scenario of interaction of the string with the particle attached. Stationary particle–string states exist with string deformations accompanying the particle. This is like polaronic states in solids. Our polaronic states in the well are non-decaying and have a continuous energy spectrum. These states may have a link to quantum electrodynamics.

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