Details

Autor(en) / Beteiligte

• Lumpkin, A. H.
• LaBerge, M.
• Rule, D. W.
• Zgadzaj, R.
• Hannasch, A.
• Zarini, O.
• Bowers, B.
• Irman, A.
• Couperus Cabadağ, J. P.
• Debus, A.
• Köhler, A.
• Schramm, U.
• Downer, M. C.

Titel

Coherent Optical Signatures of Electron Microbunching in Laser-Driven Plasma Accelerators

Ist Teil von

• Physical review letters, 2020-07, Vol.125 (1), p.1-014801, Article 014801

Ort / Verlag

College Park: American Physical Society

Erscheinungsjahr

2020

Quelle

PROLA

Beschreibungen/Notizen

• We report observations of coherent optical transition radiation interferometry (COTRI) patterns generated by microbunched ∼ 200 − MeV electrons as they emerge from a laser-driven plasma accelerator. The divergence of the microbunched portion of electrons, deduced by comparison to a COTRI model, is ∼ 9 × smaller than the ∼ 3 mrad ensemble beam divergence, while the radius of the microbunched beam, obtained from COTR images on the same shot, is < 3 μ m . The combined results show that the microbunched distribution has estimated transverse normalized emittance ∼ 0.4 mm mrad .