The progress of research going on in Group of Energy Materials (GEM), Material Research Center, in 2014 isin the following three aspects.1. Facility developmentIn order to push forward our study on fusion reactor mate...The progress of research going on in Group of Energy Materials (GEM), Material Research Center, in 2014 isin the following three aspects.1. Facility developmentIn order to push forward our study on fusion reactor materials, we upgraded the irradiation terminal (128#)of the sector focused cyclotron (SFC) at HIRFL, by developing a new specimen stage specific for irradiation withlow-fluence scattered ions. So far the terminal is capable of irradiation to both very low fluences (106 ions/cm2) andvery high fluences (typically 1016 ions/cm2) for various materials. Specimen temperature can be readily controlledusing the L-N2 cooling stage or the the high-T stage (up to 600 oC). Our recent investigation with transmissionelectron microscopy (TEM) of the defects produced by high-energy Ne ions in steel specimens provides a clearevidence that defects were produced uniformly along the depth in the specimen, indicating that the energy degraderof the terminal works effectively to disperse the ion energy in a wide range. A photo of the terminal together witha SRIM estimate of depth profiles of damage in an 8% Cr reduced activation ferritic/martensitic steel (RAFMS) isshown in Fig. 1.展开更多
High spin states in 174Re have been re-investigated via the 152Sm(27Al,5n)174 Re reaction at a bombarding energy of 14-0 MeV. The 27Al beam was provided by the JAERI tandem accelerator and impinged on an enriched 152S...High spin states in 174Re have been re-investigated via the 152Sm(27Al,5n)174 Re reaction at a bombarding energy of 14-0 MeV. The 27Al beam was provided by the JAERI tandem accelerator and impinged on an enriched 152Sm metallic foil of 2 mg/cm2 thickness. From detailed analysis ofγ-ray excitation functions,展开更多
High-spin states in odd-odd 188Au has been reinvestigated via the heavy-ion 173Yb(19F, 4nγ) reactions at 86 and 90 MeV. The 19F beam was provided by the tandem accelerator at the Japan Atomic Energy Research Institut...High-spin states in odd-odd 188Au has been reinvestigated via the heavy-ion 173Yb(19F, 4nγ) reactions at 86 and 90 MeV. The 19F beam was provided by the tandem accelerator at the Japan Atomic Energy Research Institute (JAERI). The target was an isotopically enriched 173Yb metallic foil of 2 mg/cm2 thickness with展开更多
文摘The progress of research going on in Group of Energy Materials (GEM), Material Research Center, in 2014 isin the following three aspects.1. Facility developmentIn order to push forward our study on fusion reactor materials, we upgraded the irradiation terminal (128#)of the sector focused cyclotron (SFC) at HIRFL, by developing a new specimen stage specific for irradiation withlow-fluence scattered ions. So far the terminal is capable of irradiation to both very low fluences (106 ions/cm2) andvery high fluences (typically 1016 ions/cm2) for various materials. Specimen temperature can be readily controlledusing the L-N2 cooling stage or the the high-T stage (up to 600 oC). Our recent investigation with transmissionelectron microscopy (TEM) of the defects produced by high-energy Ne ions in steel specimens provides a clearevidence that defects were produced uniformly along the depth in the specimen, indicating that the energy degraderof the terminal works effectively to disperse the ion energy in a wide range. A photo of the terminal together witha SRIM estimate of depth profiles of damage in an 8% Cr reduced activation ferritic/martensitic steel (RAFMS) isshown in Fig. 1.
文摘High spin states in 174Re have been re-investigated via the 152Sm(27Al,5n)174 Re reaction at a bombarding energy of 14-0 MeV. The 27Al beam was provided by the JAERI tandem accelerator and impinged on an enriched 152Sm metallic foil of 2 mg/cm2 thickness. From detailed analysis ofγ-ray excitation functions,
基金Supported by the National Natural Sciences Foundation (10375007, 10221003, 10025505)the Major State Basic Research Devel-opment Program of China(G2000077400)the Chinese Academy of Sciences.
文摘High-spin states in odd-odd 188Au has been reinvestigated via the heavy-ion 173Yb(19F, 4nγ) reactions at 86 and 90 MeV. The 19F beam was provided by the tandem accelerator at the Japan Atomic Energy Research Institute (JAERI). The target was an isotopically enriched 173Yb metallic foil of 2 mg/cm2 thickness with
