دورية أكاديمية
Polarization-Dependent Self-Injection by Above Threshold Ionization Heating in a Laser Wakefield Accelerator.
| العنوان: | Polarization-Dependent Self-Injection by Above Threshold Ionization Heating in a Laser Wakefield Accelerator. |
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| المؤلفون: | Ma Y; Gérard Mourou Center for Ultrafast Optical Science, University of Michigan, Ann Arbor, Michigan 48109, USA., Seipt D; Gérard Mourou Center for Ultrafast Optical Science, University of Michigan, Ann Arbor, Michigan 48109, USA., Hussein AE; Gérard Mourou Center for Ultrafast Optical Science, University of Michigan, Ann Arbor, Michigan 48109, USA., Hakimi S; Department of Physics and Astronomy, University of California, Irvine, California 92697, USA., Beier NF; Department of Physics and Astronomy, University of California, Irvine, California 92697, USA., Hansen SB; Sandia National Laboratories, Albuquerque, New Mexico 87185, USA., Hinojosa J; Gérard Mourou Center for Ultrafast Optical Science, University of Michigan, Ann Arbor, Michigan 48109, USA., Maksimchuk A; Gérard Mourou Center for Ultrafast Optical Science, University of Michigan, Ann Arbor, Michigan 48109, USA., Nees J; Gérard Mourou Center for Ultrafast Optical Science, University of Michigan, Ann Arbor, Michigan 48109, USA., Krushelnick K; Gérard Mourou Center for Ultrafast Optical Science, University of Michigan, Ann Arbor, Michigan 48109, USA., Thomas AGR; Gérard Mourou Center for Ultrafast Optical Science, University of Michigan, Ann Arbor, Michigan 48109, USA., Dollar F; Department of Physics and Astronomy, University of California, Irvine, California 92697, USA. |
| المصدر: | Physical review letters [Phys Rev Lett] 2020 Mar 20; Vol. 124 (11), pp. 114801. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: American Physical Society Country of Publication: United States NLM ID: 0401141 Publication Model: Print Cited Medium: Internet ISSN: 1079-7114 (Electronic) Linking ISSN: 00319007 NLM ISO Abbreviation: Phys Rev Lett Subsets: PubMed not MEDLINE; MEDLINE |
| أسماء مطبوعة: | Original Publication: New York : American Physical Society |
| مستخلص: | We report on the experimental observation of a decreased self-injection threshold by using laser pulses with circular polarization in laser wakefield acceleration experiments in a nonpreformed plasma, compared to the usually employed linear polarization. A significantly higher electron beam charge was also observed for circular polarization compared to linear polarization over a wide range of parameters. Theoretical analysis and quasi-3D particle-in-cell simulations reveal that the self-injection and hence the laser wakefield acceleration is polarization dependent and indicate a different injection mechanism for circularly polarized laser pulses, originating from larger momentum gain by electrons during above threshold ionization. This enables electrons to meet the trapping condition more easily, and the resulting higher plasma temperature was confirmed via spectroscopy of the XUV plasma emission. |
| تواريخ الأحداث: | Date Created: 20200404 Latest Revision: 20200406 |
| رمز التحديث: | 20221213 |
| DOI: | 10.1103/PhysRevLett.124.114801 |
| PMID: | 32242688 |
| قاعدة البيانات: | MEDLINE |
| تدمد: | 1079-7114 |
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| DOI: | 10.1103/PhysRevLett.124.114801 |