M. Ya. Amusia

Publications (133) View all

• Article: On the dependence of one-photon - two-electron differential cross sections on recoil momenta

  M. Ya. Amusia, E. G. Drukarev, E. Z. Liverts, A. I. Mikhailov
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  ABSTRACT: We calculate the distributions in recoil momenta and their energy distributions for the high energy non-relativistic double photoionization of helium caused by the quasifree mechanism of the process. The distributions obtain local maxima at small values of the recoil momenta. This is in agreement with the earlier predictions and with recently obtained experimental data. We obtained also the angular correlations, which reach the largest value in the "back-to-back" configuration of the photoelectrons. Our analysis is valid in all high energy nonrelativistic region. Particular equations are true for the case when the wavelength of the photon exceeds strongly the size of the atom. We present numerical results for the photon energies in the region of 1 keV, employed in the recent experiments.
  03/2013;
• Article: On the interactions of the high energy photoelectrons with the fullerene shell

  E. G. Drukarev, M. Ya. Amusia
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  ABSTRACT: The probability that photoionization of the caged atom in an endohedral system is accompanied by excitation of the fullerene shell is shown to be close to unity in broad intervals of the photoelectron energies. The result is obtained by summation of the perturbative series for the interaction between the photoelectron and the fullerene shell. This result means that the interaction between the photoelectron ejected from the cage atom and the fullerene shell cannot be described by a static potential, since inelastic processes become decisively important.
  02/2013;
• Article: Multielectron processes in endohedral atoms at high energies

  M. Ya. Amusia, E. G. Drukarev
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  ABSTRACT: We analyze the role of shake-off and of the final state interactions in inelastic processes in the fullerene shell which follow ionization of the caged atom. We demonstrate that in the broad interval of the photon energies the process is dominated by the final state interactions. Its contribution is calculated in a model-independent way. In the large energy intervals the cross section of the process is close to that of photoionization of isolated atom.
  02/2013;
• Source

  Available from: E. Z. Liverts

  Dataset: PhysRevA 73 012514

  E. Z. Liverts, M. Ya. Amusia, R. Krivec, V. B. Mandelzweig
• Article: Comment on Zeeman-Driven Lifshitz Transition: A Model for the Experimentally Observed Fermi-Surface Reconstruction in YbRh2Si2 (A. Hackl and M. Vojta, Phys. Rev. Lett. 106, 137002 (2011))

  V. R. Shaginyan, M. Ya. Amusia, J. W. Clark, A. Z. Msezane, K. G. Popov, M. V. Zverev, V. A. Khodel
  06/2012;