Obiettivo The project is devoted to a theoretical and experimental study of a possibility to create a new, powerful source of high-frequency monochromatic electromagnetic radiation of a free-electron laser (FEL) type formed by a bunch of ultra-relativistic particles channelling through a periodically bent crystal. Two fundamental phenomena will be investigated: (1) the undulator radiation by ultra-relativistic positrons during channelling in periodically bent crystals, (2) the lasing effect in such systems. The final goal of our efforts is to construct new sources of monochromatic electromagnetic radiation operating in the energy range from X- up to Gamma-rays. These energies by far exceed those, which are achievable at present or are planned to be achieved by means of conventional undulators and FELs based on the action of a magnetic field. To achieve the goal we plan the following:(1) To develop an adequate theory of spontaneous and stimulated emission in crystalline undulators, and on its basis to formulate exact recommendations on the ranges of parameters of crystals, beams and bending shapes within which it is possible to create a crystalline undulator and a crystal-based FEL,(2) To investigate, theoretically and experimentally, the alternative options for construction of crystalline undulators. A priori it is not clear which type of crystal media to use as well as which method to apply to create a periodic structure (supersonic wave, or Si-Ge graded strained composition, or mechanical deformation)(3) To carry out experiments on testing the quality of the structures utilized in crystalline undulators(4) To carry out experiments on propagation of a beam of ultra-relativistic particles through a crystalline undulator and on measurements and manipulation of the emitted electromagnetic radiation(5) To investigate experimentally the lasing effect in a crystalline undulator and the possibility of construction of the operating Gamma-laser Campo scientifico natural sciencesphysical sciencesopticslaser physicsnatural sciencesphysical sciencestheoretical physicsparticle physicsphotons Parole chiave Crystalline undulator beams bent crystals channeling charged particles free electron lasers radiation Programma(i) FP6-POLICIES - Policy support: Specific activities covering wider field of research under the Focusing and Integrating Community Research programme 2002-2006. Argomento(i) NEST-2003-1 - Adventure activities Invito a presentare proposte FP6-2003-NEST-A Vedi altri progetti per questo bando Meccanismo di finanziamento STREP - Specific Targeted Research Project Coordinatore JOHANN WOLFGANG GOETHE UNIVERSITAET FRANKFURT AM MAIN Contributo UE Nessun dato Indirizzo Senckenberganlage 31 FRANKFURT AM MAIN Germania Mostra sulla mappa Collegamenti Sito web Opens in new window Costo totale Nessun dato Partecipanti (3) Classifica in ordine alfabetico Classifica per Contributo UE Espandi tutto Riduci tutto AARHUS UNIVERSITET Danimarca Contributo UE Nessun dato Indirizzo Nordre Ringgade 1 AARHUS C Mostra sulla mappa Collegamenti Sito web Opens in new window Costo totale Nessun dato IMPERIAL COLLEGE OF SCIENCE, TECHNOLOGY AND MEDICINE Regno Unito Contributo UE Nessun dato Indirizzo Exhibition Road, South Kensington Campus LONDON Mostra sulla mappa Collegamenti Sito web Opens in new window Costo totale Nessun dato JOHANNES GUTENBERG UNIVERSITAT MAINZ Germania Contributo UE Nessun dato Indirizzo Saarstr. 21 MAINZ Mostra sulla mappa Collegamenti Sito web Opens in new window Costo totale Nessun dato
