Linearly polarized photon beam at MAX-lab

Summary, in English

A linearly polarized photon beam has been produced at MAX-lab using the coherent bremsstrahlung of electrons with an energy of 192.6 MeV in a 0.1 mm thick diamond crystal. The intensity and shape of the coherent maxima and their dependence on the crystal orientation are similar to the features observed at higher electron energies (similar to 1 GeV) and are well described by coherent bremsstrahlung theory. The linear polarization of the uncollimated beam at the coherent peak energy approximate to 50-60 MeV is about 20% and can be increased to 40-45% if collimation of half the characteristic angle is used At present the degree of polarization is high enough to allow the study of polarization observables in photo-nuclear reactions at MAX-lab in the energy range from Giant Dipole Resonance up to approximate to 80 MeV. (C) 2014 Elsevier B.V. All rights reserved.

• Författare: V. Ganenko; Jason Brudvik; D. Burdeinyi; Kevin Fissum; Kurt Hansen; Lennart Isaksson; K. Livingston; Magnus Lundin; V. Morokhovskii; Björn Nilsson; Dmytro Pugachov; Bent Schröder; G. Vashchenko
• Avdelning/ar: MAX IV-laboratoriet; Kärnfysik
• Publiceringsår: 2014
• Språk: Engelska
• Sidor: 137-149
• Publikation/Tidskrift/Serie: Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment
• Volym: 763
• Länkar: http://dx.doi.org/10.1016/j.nima.2014.05.110
• Dokumenttyp: Artikel i tidskrift
• Förlag: Elsevier
• Ämne: Accelerator Physics and Instrumentation
• Nyckelord: Electrons; Diamond crystal; Crystal orientations; Coherent; bremsstrahlung; Photon spectra; Polarization
• Status: Published
• Projekt: Investigations of and with Polarized Electromagnetic Beams
• ISBN/ISSN/Övrigt: ISSN: 0167-5087