title: Chairman's introduction: mechanisms, models and experiments in space radiation research.
abstract: Radiation risk estimate in space is a moral obligation and a scientific challenge requiring the combined efforts of physicists and biologists. This introductory paper presents some thoughts about problems to be solved and the possible directions of research. It stresses the necessity of cooperation across disciplines and the combination of space and ground based investigations.
authors.affiliation: Strahlenzentrum, Justus-Liebig-University, Giessen, Germany. juergen.kiefer@strz.uni-giessen.de
authors.forename: Juergen
authors.initials: J
authors.lastname: Kiefer
mesh_terms: D000337:Aerospace Medicine; D018480:Astronauts; D003359:Cosmic Radiation; D006801:Humans; D018499:Linear Energy Transfer; D008452:Maximum Allowable Concentration; D008962:Models, Theoretical; D011522:Protons; D011829:Radiation Dosage; D011834:Radiation Monitoring; D011835:Radiation Protection; D011853:Radiobiology; D018570:Risk Assessment; D019445:Solar Activity; D013026:Space Flight
chemical_list: D011522:Protons