[1] Ist Nazl Fis Nucl, I-00133 Rome, Italy
[2] Univ Roma Tor Vergata, Dept Phys, I-00133 Rome, Italy
[3] ESA, European Astronaut Ctr, Cologne, Germany
[4] Moscow State Engn Phys Inst, Moscow, Russia
[5] Minist Publ Hlth Russia, Inst Biomed Problems, Moscow, Russia
[6] DLR, Cologne, Germany
[7] Univ Naples Federico II, Naples, Italy
[8] Ist Nazl Fis Nucl, I-80125 Naples, Italy
[9] Chalmers Univ Technol, Dept Nucl Chem, S-41296 Gothenburg, Sweden
[10] NASA, Lyndon B Johnson Space Ctr, Houston, TX 77058 USA
[11] Wyle Labs, Radiat Biophys Lab, Houston, TX USA
[12] Alcatel Alenia Space Italia, Turin, Italy
[13] Mars srl, Naples, Italy