Asymmetric one-dimensional slow electron holes
<|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:'Slow solitary positive-potential peaks sustained by trapped electron deficit in a plasma with  asymmetric ion velocity distributions are in principle asymmetric, involving a potential change  across the hole. It is shown theoretically how to construct such asymmetric electron holes, thus  providing fully consistent solutions of the one-dimensional Vlasov-Poisson equation for a wide variety  of prescribed background ion velocity distributions. Because of ion reflection forces experienced by  the hole, there is generally only one discrete slow hole velocity that is in equilibrium. Moreover the  equilibrium is unstable unless there is a local minimum in the ion velocity distribution, in which  the hole velocity then resides. For stable equilibria with Maxwellian electrons, the potential drop  across the hole is shown to be  Delta:phi= 2/9 ' . 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" : ["electron hole","ion velocity distribution","local minimums","one-dimensional","positive potential","potential change","reflection force","slow electrons","trapped electrons","Vlasov-Poisson equations"]} <|eot_id|>
 Here is the Description of a dataset. Description:'Slow solitary positive-potential peaks sustained by trapped electron deficit in a plasma with  asymmetric ion velocity distributions are in principle asymmetric, involving a potential change  across the hole. It is shown theoretically how to construct such asymmetric electron holes, thus  providing fully consistent solutions of the one-dimensional Vlasov-Poisson equation for a wide variety  of prescribed background ion velocity distributions. Because of ion reflection forces experienced by  the hole, there is generally only one discrete slow hole velocity that is in equilibrium. Moreover the  equilibrium is unstable unless there is a local minimum in the ion velocity distribution, in which  the hole velocity then resides. For stable equilibria with Maxwellian electrons, the potential drop  across the hole is shown to be  Delta:phi= 2/9 ' . Please return only a json list of at most 3 Keywords corresponding to the Description:.
Slow solitary positive-potential peaks sustained by trapped electron deficit in a plasma with  asymmetric ion velocity distributions are in principle asymmetric, involving a potential change  across the hole. It is shown theoretically how to construct such asymmetric electron holes, thus  providing fully consistent solutions of the one-dimensional Vlasov-Poisson equation for a wide variety  of prescribed background ion velocity distributions. Because of ion reflection forces experienced by  the hole, there is generally only one discrete slow hole velocity that is in equilibrium. Moreover the  equilibrium is unstable unless there is a local minimum in the ion velocity distribution, in which  the hole velocity then resides. For stable equilibria with Maxwellian electrons, the potential drop  across the hole is shown to be  Delta:phi= 2/9 
electron hole; ion velocity distribution; local minimums; one-dimensional; positive potential; potential change; reflection force; slow electrons; trapped electrons; Vlasov-Poisson equations