Oblate electron holes are not attributable to anisotropic shielding
<|begin_of_text|><|start_header_id|>system<|end_header_id|> You are a research archivist expert in dataset metadata. Answer the question truthfully.  <|eot_id|><|start_header_id|>user<|end_header_id|> Here is the Description of a dataset. Description:'Shielding mechanisms' influence on the ratio of perpendicular to   parallel scale lengths of multidimensional plasma electron hole   equilibria are analyzed theoretically and computationally. It is   shown that the ``gyrokinetic'' model, invoking perpendicular   polarization, is based on a misunderstanding and cannot explain the   observational trend that greater transverse extent accompanies lower   magnetic field. Instead, the potential in the wings of the hole,   outside the region of trapped-electron depletion, has isotropic   shielding giving $:phi:propto {:rm e}^{-r/L}/r$, with the shielding   length $L$ equal to the Debye length for holes much slower than the   electron thermal speed. Particle in cell simulations confirm the   analysis. Trapped electron charge distribution anisotropy must therefore instead underlie the oblate shap' . Please return only a json list of at most 3 Keywords corresponding to the Description:.<|eot_id|><|start_header_id|>assistant<|end_header_id|> {"Answer" : ["anisotropic shielding","debye length","electron thermal speed","gyrokinetic model","lower magnetic field","multidimensional plasma electron hole equilibria","oblate electron holes","oblate shape","observational trend that greater transverse extent","perpendicular polarization","scale lengths","shielding length L","trapped electron charge distribution anisotropy","trapped-electron depletion"]} <|eot_id|>
 Here is the Description of a dataset. Description:'Shielding mechanisms' influence on the ratio of perpendicular to   parallel scale lengths of multidimensional plasma electron hole   equilibria are analyzed theoretically and computationally. It is   shown that the ``gyrokinetic'' model, invoking perpendicular   polarization, is based on a misunderstanding and cannot explain the   observational trend that greater transverse extent accompanies lower   magnetic field. Instead, the potential in the wings of the hole,   outside the region of trapped-electron depletion, has isotropic   shielding giving $:phi:propto {:rm e}^{-r/L}/r$, with the shielding   length $L$ equal to the Debye length for holes much slower than the   electron thermal speed. Particle in cell simulations confirm the   analysis. Trapped electron charge distribution anisotropy must therefore instead underlie the oblate shap' . Please return only a json list of at most 3 Keywords corresponding to the Description:.
Shielding mechanisms' influence on the ratio of perpendicular to   parallel scale lengths of multidimensional plasma electron hole   equilibria are analyzed theoretically and computationally. It is   shown that the ``gyrokinetic'' model, invoking perpendicular   polarization, is based on a misunderstanding and cannot explain the   observational trend that greater transverse extent accompanies lower   magnetic field. Instead, the potential in the wings of the hole,   outside the region of trapped-electron depletion, has isotropic   shielding giving $:phi:propto {:rm e}^{-r/L}/r$, with the shielding   length $L$ equal to the Debye length for holes much slower than the   electron thermal speed. Particle in cell simulations confirm the   analysis. Trapped electron charge distribution anisotropy must therefore instead underlie the oblate shap
anisotropic shielding; debye length; electron thermal speed; gyrokinetic model; lower magnetic field; multidimensional plasma electron hole equilibria; oblate electron holes; oblate shape; observational trend that greater transverse extent; perpendicular polarization; scale lengths; shielding length L; trapped electron charge distribution anisotropy; trapped-electron depletion