报告题目:Strong?magnetization?of?laser-produced?plasmas?as?a?new?tool?for?investigating?astrophysics?and?fusion?physics
报告人:J.?Fuchs??教授(LULI,?école?polytechnique,?CNRS,?CEA,?UPMC,?Palaiseau,?France)
报告时间:2016年6月17日(周五)上午10:30-12:00
报告地点:北京大学技物楼激光加速器实验室209会议室
摘要:
Coupling?high-power?lasers?and?high-strength?B-fields?helps?gaining?unique?insight?and?understanding?of?a?variety?of?phenomena?of?crucial?importance?for?astrophysics?and?Inertial?Confinement?Fusion.?We?have?shown?that?such?platform?could?be?used?to?mimic?the?expansion?of?a?young?star?isotropic?disk?wind?threaded?by?a?co-axial?poloidal?magnetic?field.?It?reveals?that?long-range?collimated?jets?can?indeed?by?result?from?such?system,?complementing?toroidal?B-fields?that?help?shape?the?initial?matter?from?the?star?into?a?jet.?The?same?system?can?then?be?used?to?study?the?dynamics?of?the?accretion?of?magnetized?plasma?columns?onto?star?surfaces?and?help?decipher?the?underlying?physics,?or?also?the?issue?of?particle?energization?in?astrophysical?plasmas.?But?it?can?also?serve?as?a?test-bed?to?evaluate?the?impact?of?B-fields?onto?ICF?plasmas,?a?topical?subject?since?it?has?been?recently?shown?that?such?magnetization?could?help?increase?the?temperature?of?ICF?cores,?opening?a?path?for?potential?increase?of?ICF?experiments?energy?gain.