@article{7289, author = {V. K. Alimov and B. Tyburska-Puschel and Mhjt Hoen and J. Roth and Y. Hatano and K. Isobe and M. Matsuyama and T. Yamanishi}, title = {Hydrogen isotope exchange in tungsten irradiated sequentially with low-energy deuterium and protium ions}, abstract = {Hydrogen isotope exchange in tungsten was investigated at various temperatures both after sequential exposure to low-energy deuterium (D) and protium (H) plasmas and after sequential irradiation with low-energy D and H ions. The methods used were thermal desorption spectroscopy, and the D((3)He, p)(4)He nuclear reaction at (3)He energies varied from 0.69 to 4.0MeV, allowing the determination of the D concentration at depths of up to 6 mu m. It was found that a major portion of the deuterium initially accumulated in the D-implanted W is released on subsequent exposure to H plasma or irradiation with H ions. Depth profiling of D without and with subsequent H implantation shows strong replacement close to the surface near room temperatures, but extending to all analyzable depths at elevated temperatures.}, year = {2011}, journal = {Physica Scripta}, volume = {T145}, pages = {5}, month = {Dec}, isbn = {0031-8949}, doi = {10.1088/0031-8949/2011/T145/014037}, note = {ISI Document Delivery No.: 867SUTimes Cited: 0Cited Reference Count: 2013th International Workshop on Plasma-Facing Materials and Components for Fusion Applications (PFMC)/1st International Conference on Fusion Energy Materials Science (FEMaS)MAY 09-13, 2011Rosenheim, GERMANYIPP, European Commiss}, language = {English}, }