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《Acta Scicentiarum Naturalum Universitis Pekinesis》 2004-02
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Effects of Neutron Irradiation on Nanodiamond: Raman Spectroscopy Study

GUO Yanjun 1) ZHENG Zhe 1) FENG Youli 1) LI Yongzhang 2) ( 1) Department of Geology, School of Earth and Space Sciences, Peking University, Beijing, 100871; 2) China Institute of Atomic Energy, Beijing, 102413)  
Nanodiamond treated by neutron irradiation is studied by Raman spectroscopy. The energy of the fast neutron flow is 0 5~10?MeV. The diamonds were irradiated at temperature about 45?℃ up to doses of 10 16 ~10 17 ?n·cm -2 . After irradiation, the Raman band assigns to sp 3 diamond near 1?326?cm -1 move to lower wavenumber and its half width increased. And the Raman spectroscopy also shows that affected by the energy induced by neutron flow, some the sp 2 graphite phase in nanodiamond powder transform to sp 3 diamond during the irradiation process.
【Fund】: 国家自然科学基金资助项目 (4 0 0 72 0 1 6 )
【CateGory Index】: TB383
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