Inverse bremsstrahlung heating rate in xenon clusters in the eikonal approximation
- Max-Planck-Institut fuer Plasmaphysik, EURATOM Association, Boltzmannstr. 2, 85748 Garching (Germany)
- School of Mathematical Sciences, Ramakrishna Mission Vivekananda University, Belur Math, 711202 West Bengal (India)
We report inverse bremsstrahlung (IB) heating rates in the eikonal approximation (EA). The present analysis is performed using the plasma-screened Rogers and Debye potentials for Xe clusters with two different charge states (6 and 10). We compare the eikonal results with the first Born approximation (FBA) and classical-simulation (CL-sim) (Moll et al., Phys. Plasmas 19, 033303 (2012)) calculations for clusters in infrared light. Calculations have been performed for the field strength of 2.6 Multiplication-Sign 10{sup 8} V/cm. We find that compared to the FBA and CL-sim methods, the IB heating rate in the EA is less sensitive to the choice of the two potentials considered here. The present EA calculation shows that the influence of the inner structure of atomic ion on the heating rate is more prominent for the smaller ion charge (Xe{sup 6+}). In the case of low laser field approximation based on the elastic transport cross sections, it is seen that in contrast to the FBA and classical methods, the heating rate predicted by the EA does not deviate much all over the range of mean kinetic energy of electrons (20-500 eV) considered here for both the charge states of xenon (Xe{sup 6+} and Xe{sup 10+}). Furthermore, for the Rogers potential, EA is found to be in closer agreement with the classical method than the FBA. We also compare the results of the IB heating rate using the present and low-field approximation approaches to the above three methods and observe that the magnitudes of the IB heating rate calculated in the low field approximation are, in general, higher than the corresponding values predicted by the present approach for both the electron-ion potentials.
- OSTI ID:
- 22107713
- Journal Information:
- Physics of Plasmas, Vol. 20, Issue 3; Other Information: (c) 2013 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
- Country of Publication:
- United States
- Language:
- English
Similar Records
An eikonal perturbation theory having applications in hadron dynamics. II. Massive quantum electrodynamics
O{sub 2}(X{sup 3}Σ{sub g}{sup −}) and O{sub 2}(a{sup 1}Δ{sub g}) charge exchange with simple ions
Related Subjects
ATOMIC IONS
BORN APPROXIMATION
BREMSSTRAHLUNG
CHARGE STATES
COMPARATIVE EVALUATIONS
CROSS SECTIONS
DEBYE LENGTH
EIKONAL APPROXIMATION
ELECTRONS
EV RANGE 100-1000
EV RANGE 10-100
HEATING RATE
KINETIC ENERGY
LASER RADIATION
LASERS
LIGHT TRANSMISSION
PLASMA
PLASMA HEATING
PLASMA SIMULATION
TRANSPORT THEORY
XENON IONS