Fluorine contaminates the environment. The study of fluorine contamination profile can be made easy by the use of nuclear analytic method. Measurement of prompt gamma emitted from bombarding fluorine polluted environm...Fluorine contaminates the environment. The study of fluorine contamination profile can be made easy by the use of nuclear analytic method. Measurement of prompt gamma emitted from bombarding fluorine polluted environmental sample with proton beam from accelerator provides rapid assessment of fluorine contamination. In this paper, 340 keV proton beam induced F 19 (P,αγ) O 16 reaction is performed, measurement of prompt gamma 6130 keV gives fluorine content in the soil and leaves of plants (parasol, cotton and glossy privet), taken from the fluorine polluted area.展开更多
Hydrogen distribution and content in diamond films deposited by DC arcjetunder gas recycling mode was evaluated by nuclear reaction analysis (NRA). The films werecharacterized using scanning electron microscopy, X-ray...Hydrogen distribution and content in diamond films deposited by DC arcjetunder gas recycling mode was evaluated by nuclear reaction analysis (NRA). The films werecharacterized using scanning electron microscopy, X-ray diffraction and Raman spectrometry. The NRAresults show that the hydrogen content in diamond films was approximately 0.6% (substratetemperature 770℃), and strongly depended on the substrate temperature. It was that the hydrogencontent increased with the increase of the substrate temperature. The possibility of hydrogentrapping in the films was also discussed.展开更多
文摘Fluorine contaminates the environment. The study of fluorine contamination profile can be made easy by the use of nuclear analytic method. Measurement of prompt gamma emitted from bombarding fluorine polluted environmental sample with proton beam from accelerator provides rapid assessment of fluorine contamination. In this paper, 340 keV proton beam induced F 19 (P,αγ) O 16 reaction is performed, measurement of prompt gamma 6130 keV gives fluorine content in the soil and leaves of plants (parasol, cotton and glossy privet), taken from the fluorine polluted area.
文摘Hydrogen distribution and content in diamond films deposited by DC arcjetunder gas recycling mode was evaluated by nuclear reaction analysis (NRA). The films werecharacterized using scanning electron microscopy, X-ray diffraction and Raman spectrometry. The NRAresults show that the hydrogen content in diamond films was approximately 0.6% (substratetemperature 770℃), and strongly depended on the substrate temperature. It was that the hydrogencontent increased with the increase of the substrate temperature. The possibility of hydrogentrapping in the films was also discussed.
