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Binding energy momentum

For each pair of detected electrons the binding energy co and ion recoil momentum p are recorded. In a clean knockout, the recoil momentum p = -k, where k is the momentum of the bound electron when it is struck. Thus from energy and momentum conservation... [Pg.206]

Figure 2. The binding energy spectrum for valence electrons of ethyne and the corresponding measured and calculated self-consistent-field independent particle orbital momentum densities [5]. [Pg.209]

The same normalisation of theory to the experiment is used as in the momentum density plot. Clearly the Monte Carlo simulation compares better with the experiment than the LMTO calculation by itself, but at high binding energies there is still a significant amount of intensity missing in the theory. [Pg.218]

Fig. 3.9. Left photoelectron intensity from TbTe3 surface as a function of energy and momentum for different time delays, showing the ultrafast closing of the CFW gap marked with a dot. Right Time-dependent binding energy of the Te band (lower trace) and the CB (upper trace), exhibiting a periodic modulation at 2.3 and 3.6 THz, respectively, under strong excitation fluence (2mJ/ cm2). From [22]... Fig. 3.9. Left photoelectron intensity from TbTe3 surface as a function of energy and momentum for different time delays, showing the ultrafast closing of the CFW gap marked with a dot. Right Time-dependent binding energy of the Te band (lower trace) and the CB (upper trace), exhibiting a periodic modulation at 2.3 and 3.6 THz, respectively, under strong excitation fluence (2mJ/ cm2). From [22]...
Expressions for the medium modifications of the cluster distribution functions can be derived in a quantum statistical approach to the few-body states, starting from a Hamiltonian describing the nucleon-nucleon interaction by the potential V"(12, l/2/) (1 denoting momentum, spin and isospin). We first discuss the two-particle correlations which have been considered extensively in the literature [5,7], Results for different quantities such as the spectral function, the deuteron binding energy and wave function as well as the two-nucleon scattering phase shifts in the isospin singlet and triplet channel have been evaluated for different temperatures and densities. The composition as well as the phase instability was calculated. [Pg.82]

An important phenomenon is the Mott effect. At given temperature T and total momentum P, the binding energy of the deuteron bound state vanishes at the density n 1"" (P. T) due to the Pauli blocking. As a consequence, the... [Pg.82]

The resulting EoS is expressed as an expansion in powers of k/, and the value of A 0.65 GeV is adjusted to the empirical binding energy per nucleon. In its present form the validity of this approach is clearly confined to relatively small values of the Fermi momentum, i.e. rather low densities. Remarkably for SNM the calculation appears to be able to reproduce the microscopic EoS up to p 0.5 fm-3. As for the SE the value obtained in this approach for 4 = 33 MeV is in reasonable agreement with the empirical one however, at higher densities (p > 0.2 fm-3) a downward bending is predicted (see Fig. 4) which is not present in other approaches. [Pg.102]

The binding energies of even low mass adsorbates are sufficiently large so that direct momentum transfer does not cause desorption. This fact, coupled with the observation that ESD ions have large energies indicates that ESD proceeds via an electronic excitation mechanism. The energy dependence of the cross sections are quite consistent with this conclusion . [Pg.111]

This criterion is met for an atom bound (with a binding energy B greater than r°) in a collection of atoms, all of which share the required recoil momentum. Therefore, it becomes possible to observe the resonance in the solid state or viscous liquids where B is of the order of 1 eV. The effective value of M is thereby increased, resulting in a decrease in R. For example, chemical information may be obtained for atoms in an isolated particle several tens of nanometers in size, and for smaller particles where interactions with other particles or the catalyst support make the effective mass of the particle larger. The above condition, as will be shown below, is not sufficient for observation of the Mossbaucr effect. [Pg.128]


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