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REDUCING RF EXCITE PULSE INTENSITY TO IMPROVE MRI IMAGE QUALITY IN SOME OF COILS
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《Chinese Journal of Biomedical Engineering(English Edition)》 1999年第4期89-90,共2页
关键词 MRI rf REDUCING rf EXCITE PULSE INTENSITY TO IMPROVE MRI IMAGE QUALITY IN SOME OF COILS
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Compact waveguide CO_2 laser excited by a RF power supply 被引量:1
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作者 巴德 田兆硕 王骐 《Chinese Optics Letters》 SCIE EI CAS CSCD 2004年第10期597-599,共3页
The design and performance of radio frequency (RF) excited partial Z-fold waveguide CO_2 laser with two channels are exposed. The length of the partial Z-fold channel is 3×460 mm and that of the single channel is... The design and performance of radio frequency (RF) excited partial Z-fold waveguide CO_2 laser with two channels are exposed. The length of the partial Z-fold channel is 3×460 mm and that of the single channel is 460 mm. The electrodes for the two channels are common and excited by a same RF source. According to our analysis, this kind of structure can greatly improve the laser offset frequency stability. In the experiments, we studied the variation of laser output power with gas pressure for two different channels. The maximum laser output power is about 23 W for the partial Z-fold channel and about 6 W for the single channel. 展开更多
关键词 rf Compact waveguide CO2 laser excited by a rf power supply
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