Dresden 2013 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 96: Kosmische Strahlung 6

T 96.6: Vortrag

Dienstag, 5. März 2013, 18:00–18:15, WIL-B321

Calculation of molecular bremsstrahlung radiation and air shower plasma conditions for CROME — •Patrick Neunteufel, Ralph Engel, Radomir Smida, and Felix Werner — Karlsruher Institut für Technologie

The possibility of the detection of extensive air showers by observation of isotropic microwave radiation due to molecular bremsstrahlung has been proposed in 2008. Ionization electrons, forming a short-lived, tenuous plasma in the wake of the shower, interact with atmospheric neutrals and produce bremsstrahlung. Concurrent with first measurements of microwave radiation by the CROME experiment in Karlsruhe, an independent, theory based model for emission of isotropic bremsstrahlung emission has been developed. In this talk, the assumptions of the model for bremsstrahlung emission and the findings concerning the state of the plasma in an air shower will be discussed. The magnitude of the expected signal is calculated and compared to predictions made in the original proposal by Gorham et al. and to the observed GHz signals.