000218418 001__ 218418
000218418 005__ 20230317222610.0
000218418 0247_ $$2URN$$aurn:nbn:de:gbv:27-dbt-20190116-1451534 
000218418 0247_ $$2URN$$aurn:nbn:de:gbv:27-dbt-20190116-1451534
000218418 037__ $$aGSI-2019-00396
000218418 041__ $$aEnglish
000218418 1001_ $$0P:(DE-HGF)0$$aReuter, Maria$$b0$$eCorresponding author$$gfemale
000218418 245__ $$aCharacterisation of a laser wakefield accelerator with ultra-short probe pulses
000218418 260__ $$aJena$$bdb-Thüringen$$c2019
000218418 300__ $$a137 S.
000218418 3367_ $$2DataCite$$aOutput Types/Dissertation
000218418 3367_ $$2ORCID$$aDISSERTATION
000218418 3367_ $$2BibTeX$$aPHDTHESIS
000218418 3367_ $$02$$2EndNote$$aThesis
000218418 3367_ $$0PUB:(DE-HGF)11$$2PUB:(DE-HGF)$$aDissertation / PhD Thesis$$bphd$$mphd$$s1550827002_19233
000218418 3367_ $$2DRIVER$$adoctoralThesis
000218418 502__ $$aDissertation, Friedrich-Schiller-Universität Jena , 2018$$bDissertation$$cFriedrich-Schiller-Universität Jena $$d2018$$o2018-09-20
000218418 520__ $$aWithin the frame of this thesis, aspects of the acceleration of electrons with high-intensitylaser pulses inside an underdense plasma were investigated. The basic acceleration mecha-nism, which is referred to as laser wakefield acceleration relies on the generation of a plasmawave by an intense laser pulse. Since the plasma wave co-propagates with the laser pulse,its longitudinally alternating electric field moves with a velocity close to the speed of lightand electrons trapped in the accelerating phase of the wave can be accelerated to relativisticenergies. While basic principles such as the generation of a plasma wave, the injection ofelectrons into the accelerating phase of the wave and limitsto the acceleration process areknown, the exact processes occurring during the nonlinear interaction of laser pulse andplasma wave still need to be explored in more detail. The consequence of those nonlinearprocesses is a drastic change of the electron parameters – e.g. final electron energy, band-width and pointing – through slight changes in the initial conditions. In this context, theposition in the plasma at which electrons are injected into the plasma wave plays a key rolefor the maximum achievable electron energy. Therefore, theinjection of electrons at a de-fined position is a possibility to reduce shot-to-shot fluctuations and might make the electronpulses applicable, e.g. as a stable source of secondary radiation for temporally and spatiallyhighly resolving imaging techniques. The investigation ofcontrolled injection of electrons atan electron density transition demonstrated a correlationof electron pulse parameters suchas electron energy gain and accelerated charge to the properties of the transition, and thus,might be a promising method to generate custom designed electron pulses. Nevertheless,shot-to-shot fluctuations in the electron parameters were still observed and are most likelycaused by the nonlinear evolution of the laser pulse inside the plasma. To further reduceinstabilities, deeper insight into these nonlinear processes is required and hence, a methodto observe the plasma wave and the laser pulse. Combining an ultra short probe pulse witha highly resolving imaging system as successfully implemented at the institute of Optics andQuantumelectronics in Jena, more light can be shed on these processes, which take placeon femtosecond and micrometer scales. With that system, characteristics of the magneticfields inextricably connected to the acceleration process could be studied in unprecedenteddetail. This deeper insight allowed to observe signatures of the magnetic field of the drivinglaser pulse for the first time, which paves the way for the indirect observation of the mainlaser pulse during the interaction.
000218418 536__ $$0G:(DE-HGF)POF3-6211$$a6211 - Extreme States of Matter: From Cold Ions to Hot Plasmas (POF3-621)$$cPOF3-621$$fPOF III$$x0
000218418 909CO $$ooai:repository.gsi.de:218418$$pVDB
000218418 9101_ $$0I:(DE-Ds200)Ext-HIJ$$6P:(DE-HGF)0$$aExternal Helmholtz Institute: HIJ$$b0$$kHIJ
000218418 9131_ $$0G:(DE-HGF)POF3-621$$1G:(DE-HGF)POF3-620$$2G:(DE-HGF)POF3-600$$3G:(DE-HGF)POF3$$4G:(DE-HGF)POF$$9G:(DE-HGF)POF3-6211$$aDE-HGF$$bForschungsbereich Materie$$lVon Materie zu Materialien und Leben$$vIn-house research on the structure, dynamics and function of matter$$x0
000218418 9132_ $$0G:(DE-HGF)POF4-631$$1G:(DE-HGF)POF4-630$$2G:(DE-HGF)POF4-600$$3G:(DE-HGF)POF4$$4G:(DE-HGF)POF$$aDE-HGF$$bForschungsbereich Materie$$lFrom Matter to Materials and Life$$vMatter – Dynamics, Mechanisms and Control$$x0
000218418 9141_ $$y2019
000218418 920__ $$lyes
000218418 9201_ $$0I:(DE-Ds200)HIJ-20110223OR115$$kHIJ$$lHI Jena$$x0
000218418 980__ $$aphd
000218418 980__ $$aVDB
000218418 980__ $$aI:(DE-Ds200)20120319OR115
000218418 980__ $$aI:(DE-Ds200)HIJ-20110223OR115
000218418 980__ $$aUNRESTRICTED