Electron kappa distribution and quasi-thermal noise
نویسندگان
چکیده
منابع مشابه
Thermal magnetic field noise limits resolution in transmission electron microscopy.
The resolving power of an electron microscope is determined by the optics and the stability of the instrument. Recently, progress has been obtained towards subångström resolution at beam energies of 80 kV and below but a discrepancy between the expected and achieved instrumental information limit has been observed. Here we show that magnetic field noise from thermally driven currents in the con...
متن کاملThermal Electron Energy Distribution Measurements in the Ionosphere
-Results of electron spectrometer and cylindrical Langmuir probe measurements of ionospheric electron energy distribution in the range from about 0.2 eV to 4-0 eV are presented and discussed in this paper.
متن کاملElectron acoustic solitary waves with non-thermal distribution of electrons
Electron-acoustic solitary waves are studied in an unmagnetized plasma consisting of non-thermally distributed electrons, fluid cold electrons and ions. The Sagdeev pseudo-potential technique is used to carry out the analysis. The presence of non-thermal electrons modifies the parametric region where electron acoustic solitons can exist. For parameters representative of auroral zone field lines...
متن کاملQuasi–Thermal Comptonization and GRBs
Quasi–thermal Comptonization is an attractive alternative to the synchrotron process to explain the spectra of GRBs, even if we maintain other important properties of the internal shock scenario, implying a compact emitting region and an equipartition magnetic field. Photon–photon absorption and electron–positron pairs can play a crucial role: this process may lock the effective temperature in ...
متن کاملModulation of electron-acoustic waves in a plasma with kappa distribution
In the present work, employing a one dimensional model of an unmagnetized collisionless plasma consisting of a cold electron fluid, hot electrons obeying j velocity distribution, and stationary ions, we study the amplitude modulation of an electron-acoustic waves by use of the conventional reductive perturbation method. Employing the field equations of such a plasma, we obtained the nonlinear S...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Geophysical Research: Space Physics
سال: 2014
ISSN: 2169-9380
DOI: 10.1002/2014ja020353