caa a22 4500 386335915 CHVBK 20180307111733.0 cr unu---uuuuu 161130e198907 xx s 000 0 eng 10.1557/S0883769400062126 doi S0883769400062126 pii (NATIONALLICENCE)cambridge-10.1557/S0883769400062126 Guinan M. W. Fundamental Studies of Irradiation Effects in Fusion Materials [Elektronische Daten] [M. W. Guinan] Fusion is the energy production process which drives the universe. Controlled utilization of this process for the benefit of man has been the illusive goal of the world's fusion power research since the 1950s. The most easily utilized fusion reaction is the fusion of deuterium and tritium. Every major fusion power research program is directed toward utilization of the energy released from this reaction. When the hydrogen isotopes deuterium (D) and tritium (T) are fused, 80% of the energy released is carried by a single neutron. This neutron moves at 5 × 107 m/s and a kinetic energy of 14 MeV, so the designer of a magnetically confined reactor is faced with the reality that 80% of the power produced will impinge on the structure facing the burning plasma as a "current” of 14 MeV neutrons. The D-T reaction is illustrated in Figure 1. Neutrons are not charged and do not interact with electrons in material through which they move. They collide with nuclei. The result of these collisions is always some combination of the in-situ creation of one or more energetic ions, alteration of chemistry through transmutation, and the introduction of radioactivity. Each changes material properties. Nearly all the present experimental data base of neutron irradiation effects has come from fission reactor irradiations. Copyright © Materials Research Society 1989 MRS Bulletin Cambridge University Press 14/7(1989-07), 20-28 0883-7694 14:7<20 1989 14 MRS https://doi.org/10.1557/S0883769400062126 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1557/S0883769400062126 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Guinan M. W. NATIONALLICENCE 773 0- MRS Bulletin Cambridge University Press 14/7(1989-07), 20-28 0883-7694 14:7<20 1989 14 MRS CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge