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Momentum dependence

When M is an atom the total change in angular momentum for the process M + /zv M+ + e must obey the electric dipole selection mle Af = 1 (see Equation 7.21), but the photoelectron can take away any amount of momentum. If, for example, the electron removed is from a d orbital ( = 2) of M it carries away one or three quanta of angular momentum depending on whether Af = — 1 or +1, respectively. The wave function of a free electron can be described, in general, as a mixture of x, p, d,f,... wave functions but, in this case, the ejected electron has just p and/ character. [Pg.296]

A company s PSM initiative deserves some special treatment to attract the initial attention that will help give it momentum. Depending on what is already in place, a special edition of the company newsletter could be produced, including a letter from the CEO and a copy of the PSM vision statement. Other information might include identification of the proposed PSM champion and a summary of the company s preliminary plans. (Two examples of such summaries appear as Figures 2-6 and 2-7.)... [Pg.30]

Momentum depends upon mass and velocity. The particle approaches the wall with momentum mv and leaves with this same momentum in the opposite direction. The momentum transferred to the wall is, then... [Pg.59]

The saddle-point equation leads to the momentum dependent dynamical quark mass Mf(k) = MfF2(k). Mf here is a function of current mass mf (M.M. Musakhanov, 2002). It was found that that M[m] is a decreasing function and for the strange quark with ms = 0.15 GeV Ms 0.5 Mu>d. This result in a good correspondence with (P. Pobylitsa, 1989), where another method was completely applied - direct sum is of planar diagrams. [Pg.266]

Interactions N — N interaction can be taken into account the same way as in Ref.[13]. Neutrons moving into the extra dimension may interact differently because of an extra momentum dependence. Such momentum dependence appears e.g. in Walecka-type [17, 18] construction. [Pg.305]

We have investigated the influence of diquark condensation on the thermodynamics of quark matter under the conditions of /5-equilibrium and charge neutrality relevant for the discussion of compact stars. The EoS has been derived for a nonlocal chiral quark model in the mean field approximation, and the influence of different form-factors of the nonlocal, separable interaction (Gaussian, Lorentzian, NJL) has been studied. The model parameters are chosen such that the same set of hadronic vacuum observable is described. We have shown that the critical temperatures and chemical potentials for the onset of the chiral and the superconducting phase transition are the lower the smoother the momentum dependence of the interaction form-factor is. [Pg.349]

This shows the working principle of a magnetic sector the radius r depends on the momentum mv of an ion, and therefore the momentum depends on m/z-... [Pg.131]

Table II clearly indicates that none of the previously mentioned OF-KEDF s has the eorreet LR behavior at the FEG limit. Even more interestingly, the TF funetional is supposed to be exact at the FEG limit, but its LR funetion has no momentum dependence. At first glance, one would think that there is some ineonsistency involved. In fact, there is no confliet beeause the TF functional is only the zeroth-order perturbation result, while the Lindhard function is the first-order result. A similar paradox exists for the asymptotic Friedel oscillations in Eq. (87). Table II clearly indicates that none of the previously mentioned OF-KEDF s has the eorreet LR behavior at the FEG limit. Even more interestingly, the TF funetional is supposed to be exact at the FEG limit, but its LR funetion has no momentum dependence. At first glance, one would think that there is some ineonsistency involved. In fact, there is no confliet beeause the TF functional is only the zeroth-order perturbation result, while the Lindhard function is the first-order result. A similar paradox exists for the asymptotic Friedel oscillations in Eq. (87).
Ignoring the momentum dependence of the polarizabilities, one immediately comes to a logarithmically ultraviolet divergent integral [31]... [Pg.118]

The recoil part of the proton size correction of order Za)Ep was first considered in [9, 10]. In these works existence of the nontrivial nuclear form factors was ignored and the proton was considered as a heavy particle without nontrivial momentum dependent form factors but with an anomalous magnetic moment. The result of such a calculation is most conveniently written in terms of the elementary proton Fermi energy Ep which does not include the contribution of the proton anomalous magnetic moment (compare (10.2) in the muonium case). Calculation of this correction coincides almost exactly... [Pg.222]

One way to reduce the problem slightly is to recognize that for many properties A, the position and momentum dependences of A are separable. In that case, Eq. (3.5) can be written as... [Pg.81]

For a full discussion we must include momentum dependent interactions. For instance, starting from a two-body potential of finite range we can expand the Fourier transform (q2) as... [Pg.161]

We must however add a word of caution. The method as sketched here has been established to deal with the small momentum behavior of the scaling functions. For large momenta we may run into problems in that the subleading momentum dependence is not treated correctly. On the quantitative level however this does not seriously invalidate our results. We will discuss this aspect further in Sect. 15.2. See also Sect. 13.2.3,... [Pg.222]

The simple expression (14,5) could lead to the erroneous conclusion that the momentum dependence of the autocorrelation function in tree approximation follows the Debye function, reproducing the result for a noninteracting chain. This conclusion is false, since the uncritical surface and thus both Nr and q2 nontrivially depend on q3. The effects show up in the region of large momenta q2 L... [Pg.249]

Before describing the application of Nuclear magnetic resonance (NMR) spectroscopy to potentized homeopathic drugs we would first discuss the basic principles of NMR spectroscopy. This spectroscopy is a powerful tool providing structural information about molecules. Like UV-visible and infra red spectrometry, NMR spectrometry is also a form of absorption spectrometry. Nuclei of some isotopes possess a mechanical spin and the total angular momentum depends on the nuclear spin, or spin number 1. The numerical value of I is related to the mass number and the atomic number and may be 0, Vi, 1 etc. The medium of homeopathic... [Pg.40]

From Eq. (8.8) it is evident that particle momentum depending on mass and velocity of the particles is important to control the delivery. The particle acceleration and impact velocity are defined by particle properties such as size, density, and morphology and device properties such as pressure of the compressed gas source, nozzle geometry, and others. [Pg.262]

The first term on the right-hand side is identical with that of Eq. (41) (since the nuclear kinetic energy cancel the Hamiltonian matrix Hrnn can be replaced by the PES matrix Vrnn, Eq. (10)). The derivatives in the second term on the right-hand side of Eq. (48) are responsible for the formation of a nuclear coordinate and momentum dependence of the density matrix. The multitude of involved coordinates and momenta, however, avoids any direct calculation of the pmn(R, / /,), and respective applications finally arrive at a computation of bundles of nuclear trajectories which try to sample the full density matrix. [Pg.53]

The measurements were carried out using polarized-light from synchrotron radiation. The angle-resolved UPS spectra were recorded for specific directions of photon incidence, photon polarization, and electron exit, chosen in order to resolve the momentum dependence of the 7t-electron energy bands which could be observed in this experiment. Details are available elsewhere63. The UPS results are analysed not only with the help of the valence effective Hamiltonian (VEH) method, but also with the help of new quantum-chemical calculations based upon the excitation model method64. The full VEH band structure is shown in Fig. 7.32. [Pg.127]

With increasing to the dip in the spin excitation damping is shallowed and finally disappears. Besides, on approaching toq the denominator in Eq. (10) will favor the appearance of the commensurate peak at Q. Thus, the low-frequency incommensurate maxima of converge to the commensurate peak at to wq. The dispersion of the maxima in x" above toq is determined by the denominator in Eq. (10) and is close to that shown in Fig. 1. Consequently, the dispersion of the maxima in x" resembles two parabolas converging near the point (Q,cc>q). The upper parabola with branches pointed up reflects the dispersion of spin excitations, while the lower parabola with branches pointed down stems from the momentum dependence of the spin excitation damping. Such kind of the dispersion is indeed observed in cuprates [3, 23]. [Pg.126]

The no-pair spin-orbit Hamiltonian [105] differs from the corresponding BP terms [103] by momentum dependent factors of the type Ai/(Ej + me2) or (AjAj)/ (Ej+ mec2), where E, and A,- or A - have been defined in [106] and [107], respectively. There are essentially two ways of taking these factors into account. [Pg.161]


See other pages where Momentum dependence is mentioned: [Pg.175]    [Pg.500]    [Pg.53]    [Pg.252]    [Pg.144]    [Pg.86]    [Pg.116]    [Pg.71]    [Pg.249]    [Pg.596]    [Pg.144]    [Pg.133]    [Pg.58]    [Pg.58]    [Pg.81]    [Pg.34]    [Pg.116]    [Pg.123]    [Pg.126]    [Pg.127]    [Pg.162]    [Pg.65]    [Pg.4]   


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Angular-momentum-dependent

Angular-momentum-dependent pseudopotentials

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