Ion Densities in the Nightside Ionosphere of Mars: Effects of Electron Impact Ionization

Girazian Z.; Mahaffy P.; Lillis R. J.; Benna M.; Elrod M.; Fowler C. M.; Mitchell D. L.

摘要

Abstract > We use observations from the Mars Atmosphere and Volatile EvolutioN (MAVEN) mission to show how superthermal electron fluxes and crustal magnetic fields affect ion densities in the nightside ionosphere of Mars. We find that due to electron impact ionization, high electron fluxes significantly increase the CO <mat:math display="inline" altimg="urn:x-wiley:grl:media:grl56605:grl56605-math-0001" wiley:location="equation/grl56605-math-0001.png"> <mat:msubsup> <mat:mrow/> <mat:mrow> <mat:mn>2</mat:mn> </mat:mrow> <mat:mrow> <mat:mo>+</mat:mo> </mat:mrow> </mat:msubsup> </mat:math> , O + , and O <mat:math display="inline" altimg="urn:x-wiley:grl:media:grl56605:grl56605-math-0002" wiley:location="equation/grl56605-math-0002.png"> <mat:msubsup> <mat:mrow/> <mat:mrow> <mat:mn>2</mat:mn> </mat:mrow> <mat:mrow> <mat:mo>+</mat:mo> </mat:mrow> </mat:msubsup> </mat:math> densities below 200?km but only modestly increase the NO + density. High electron fluxes also produce distinct peaks in the CO <mat:math display="inline" altimg="urn:x-wiley:grl:media:grl56605:grl56605-math-0003" wiley:location="equation/grl56605-math-0003.png"> <mat:msubsup> <mat:mrow/> <mat:mrow> <mat:mn>2</mat:mn> </mat:mrow> <mat:mrow> <mat:mo>+</mat:mo> </mat:mrow> </mat:msubsup> </mat:math> , O + , and O <mat:math display="inline" altimg="urn:x-wiley:grl:me </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译：</span><抽象类型= “主要” 的xml：LANG = “en” 的XML：ID = “grl56605-ABS-0001”> <标题类型= “主”>抽象</ TITLE> >我们使用观测从火星大气和挥发性演进（MAVEN）任务来说明如何超热电子通量和地壳磁场影响火星的电离层阴面离子密度。我们发现，由于电子碰撞电离，高电子通量显著增加CO <垫：数学显示=“内联” altimg =“瓮：X-威利：GRL：介质：grl56605：grl56605-数学-0001”威利：位置= “方程/ grl56605-数学0001.png”> <垫：msubsup> <垫：MROW /> <垫：MROW> <垫：MN> 2 </垫：MN> </垫：MROW> <垫：MROW > <垫：MO> + </垫：MO> </垫：MROW> </垫：msubsup> </垫：数学>，0 <SUP> + </ SUP>和O <垫：数学显示= “内联” altimg = “瓮：X-威利：GRL：介质：grl56605：grl56605-数学-0002” 威利：位置= “方程/ grl56605-数学0002.png”> <垫：msubsup> <垫：MROW / > <垫：MROW> <垫：MN> 2 </垫：MN> </垫：MROW> <垫：MROW> <垫：MO> + </垫：MO> </垫：MROW> </垫：msubsup> </垫：低于200数学>密度？公里但仅适度增加了NO <SUP> + </ SUP>密度。高电子通量也是在CO <垫产生明显的峰：数学显示= “内联” altimg = “瓮：X-威利：GRL：介质：grl56605：grl56605-数学-0003” 威利：位置=“方程/ grl56605-数学-0003.png“> <垫：msubsup> <垫：MROW /> <垫：MROW> <垫：MN> 2 </垫：MN> </垫：MROW> <垫：MROW> <垫：MO> + </垫：MO> </垫：MROW> </垫：msubsup> </垫：数学>，0 <SUP> + </ SUP>和O <垫：数学显示= “内联” altimg =”金塔：X-威利：GRL：我 </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-23539/'>《Geophysical Research Letters》</a> <b style="margin: 0 2px;">|</b><span>2017年第22期</span><b style="margin: 0 2px;">|</b><span>共9页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Girazian Z.&option=202" target="_blank" rel="nofollow">Girazian Z.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Mahaffy P.&option=202" target="_blank" rel="nofollow">Mahaffy P.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Lillis R. J.&option=202" target="_blank" rel="nofollow">Lillis R. J.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Benna M.&option=202" target="_blank" rel="nofollow">Benna M.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Elrod M.&option=202" target="_blank" rel="nofollow">Elrod M.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Fowler C. M.&option=202" target="_blank" rel="nofollow">Fowler C. M.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Mitchell D. L.&option=202" target="_blank" rel="nofollow">Mitchell D. L.;</a> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> <p>NASA Goddard Space Flight CenterGreenbelt MD USA;</p> <p>NASA Goddard Space Flight CenterGreenbelt MD USA;</p> <p>Space Sciences LaboratoryUniversity of CaliforniaBerkeley CA USA;</p> <p>NASA Goddard Space Flight CenterGreenbelt MD USA;</p> <p>NASA Goddard Space Flight CenterGreenbelt MD USA;</p> <p>CRESSTUniversity of MarylandCollege Park MD USA;</p> <p>Space Sciences LaboratoryUniversity of CaliforniaBerkeley CA USA;</p> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/163.html" title="地球物理学">地球物理学;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Mars&option=203" rel="nofollow">Mars;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Ionosphere&option=203" rel="nofollow">Ionosphere;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Ions&option=203" rel="nofollow">Ions;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Electron impact ionization&option=203" rel="nofollow">Electron impact ionization;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Electron precipitation&option=203" rel="nofollow">Electron precipitation;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=nightside&option=203" rel="nofollow">nightside;</a> </p> <div class="translation"> 机译：火星;电离层;离子;电子碰撞电离;电子降水;夜间; </div> </li> </ul> </div> </div> <div class="literature cardcommon"> <div class="similarity "> <h3 class="all_title" id="enpatent66">相似文献</h3> <div class="similaritytab clearfix"> <ul> <li class="active" >外文文献</li> <li >中文文献</li> <li >专利</li> </ul> </div> <div class="similarity_details"> <ul > <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/journal-foreign-detail/0704019849514.html">Ion Densities in the Nightside Ionosphere of Mars: Effects of Electron Impact Ionization</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Girazian Z.&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Girazian Z.,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Mahaffy P.&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Mahaffy P.,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Lillis R. 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Lillis,</a> <span>-1</span> </span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：火星夜间电离层中的离子密度：电子碰撞电离的影响</span> </p> </li> <li> <div> <b>7. </b><a class="enjiyixqcontent" href="/open-access_resources_thesis/0100068396857.html ">Nightside ionosphere of Mars: Modeling the effects of crustal magnetic fields and electron pitch angle distributions on electron impact ionization</a> <b>[O] </b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Lillis, Robert J.&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Lillis, Robert J.,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Fillingim, Matthew O.&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Fillingim, Matthew O.,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Peticolas, Laura M.&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Peticolas, Laura M.,</a> <span>2009</span> </span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：火星的夜间电离层：模拟地壳磁场和电子俯仰角分布对电子碰撞电离的影响</span> </p> </li> <li> <div> <b>8. </b><a class="enjiyixqcontent" href="/ntis-science-report_ad_thesis/020711824731.html">Combined Effects of Refraction and Coherent Scattering by Columnar Ionization Density Irregularities in Ionospheric Radio Propagation.</a> <b>[R] </b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Bubenik, D. 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