6533b853fe1ef96bd12add89

RESEARCH PRODUCT

Resonant transition radiation in the X-ray region from a low emittance 855 MeV electron beam

S. GampertG. StephanH. EuteneuerHartmut BackeTh. WalcherK. H. KaiserWerner LauthF. R. BuskirkR. ZahnH. J. HartmannA. GrendelCh. Weinheimer

subject

PhysicsNuclear and High Energy PhysicsRange (particle radiation)business.industryX-rayRadiationElectromagnetic radiationOpticsTransition radiationCathode rayPhysics::Accelerator PhysicsBeam emittancebusinessMicrotron

description

The interference of transition radiation coherently produced from a periodic stack of four polyimide foils of 7.2 μm thickness and a separation of 162 μm was investigated. This stack has been brought into the low emittance (3 π nm rad) electron beam of the 855 MeV Mainz Microtron MAMI. Transition radiation was observed in the energy range from 2 to 15 keV with a LN2-cooled pin photodiode. A good energy resolution of 0.8 keV and angular resolution of 0.15 mrad was achieved simultaneously allowing for the first time to quantitatively study the interference pattern. Good agreement with theoretical calculations is found. Prospects to exploit transition radiation in the x-ray region from a low emittance electron beam as a high brilliant radiation source are discussed.

https://doi.org/10.1007/bf01296337