激光等離子體中強朗繆爾激元對粒子的加速.pdf

1、南昌大學碩士學位論文激光等離子體中強朗繆爾激元對粒子的加速姓名：路飛飛申請學位級別：碩士專業(yè)：光學指導教師：劉三秋20081216ABSTRACTWiththecontinuingdevelopmentofhilghintensityshortpulselasertechnologypeopleplaygreatinterestedinparticlesaccelerationinlaserplasmainteractionOneoft

2、heresultsoftheinteractiontheelectronaccelerationinthelaserplasmaisimportantforitsapplicationssuchascompactparticleacceleratorsandfastignitionforinertialconfinementfusionInadditionstudyoftheionaccelerationisalsoimportanta

3、sitcansupplyvaluableinformationofthefundamentalphysicsoftheinteractionofahighintensitylaserwithunderdenseplasmasuchasselffocusingandchannelingduetelativisticandchargedisplacementeffects，itisalsodirectlyrelatedtotheobserv

4、ationsofanomalouslyhighyieldsofneutronsresultingfromhotchannelformationSeveralmechanismsofelectronaccelerationhavebeensuggestedSOfarThoseare“l(fā)aserwakefieldaccelerationbeatwaveaccelerationinversebremsstrahlungelectronacce

5、lerationinverseCherenkovaccelerationandSOonAccelerationmechanismsforioriare：theionaccelerationbyanelectrostaticelectricfieldcreatedbyfastelectronsattherearandfrontsidesofthetarget；theinductiveelectricfieldandCoulombionex

6、plosioninducedbyasuperstronglaser℃pulse；andionaccderationintheelectrostatic丘eldofalaminarshockwaveandin也eelectric丘eldcreatedbythereturncurrentinthetargetAllthesemechanismscannotprovideallapproachtotheexplanationoftheexpo

7、nentialelectronorionenergyspectrameasuredexperimentallynepropagationoflaserinplasmamaydrivekindsofinstabilityofplasmaandproduceLangmuirwaveandionacousticwaveOntheonehand，therealefrequentinteractionsbetweenwavesandparticl

8、es；ontheotherhandtherearewidelyenergyexchangesbetweenwave熔，whichcomposeaverycompleximageofinteractionsTheresuRoftheseinteractionsisperformedasscatteroflaserandproductionofenergeticelectronsandionsInthispaperWestudyanalyt