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plasma expansion
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  等离子体膨胀
     We measured the plasma expansion velocities by the electrical methods.
     我们采用电学方法进行了等离子体膨胀速度测量。
短句来源
     Time integrated spectrum of 3ω 0/2 light in plasma produced by 1.053μm laser irradiating on Au disk is shown in this paper. Based on the measurement of red shifted peak and blue shifted peak. The temperature of electron in interaction region and the plasma expansion speed in one quarter critical electron density layer are obtained.
     测量了1.053μm激光照射金平面靶时产生的3ω0/2谐波散射光的时间积分谱,由红移峰和蓝移峰的波长推算出双等离子体衰变区域的电子温度以及nc/4区域的等离子体膨胀速度,即离子声速。
短句来源
     In addition, compared with the case of the stainless steel cathode, the plasma expansion velocity for the carbon fiber cathode is slower and the pulse duration of output microwave can be widened by using the carbon fiber cathode.
     此外和金属阴极相比较,处理后碳纤维阴极具有较慢的等离子体膨胀速度(≤1 cm/μs)并使该实验用微波源具有较宽的微波脉冲输出(≥200 ns)。
短句来源
     Plasma expansion in cylinder targets are investigated.
     最后对输运管道内的等离子体膨胀问题进行了讨论 .
短句来源
     The contents of the simulations include : the influence of the ionization of neutral gas in the tube by the relativistic electron beam , the explosive emission in the inner surface of RBWOs , the changes of the electron beam emission radii resulting from the cathode plasma expansion and the fluctuation of the relativistic electron beam on the pulse width and output power .
     具体包括:RBWO中存在的中性气体被强流电子注电离、RBWO内壁的爆炸发射、阴极等离子体膨胀致使所发射电子注半径发生变化、以及电子注参量的脉动等因素,各自对输出微波脉冲性能的影响、与脉冲缩短现象的关系等。
短句来源
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  等离子体喷射
     A fourpinhole transmission grating array and a picosecond frame camera were combined, and the threedimensional measurement of Xray time, space and energy spectra was conducted on the laser shotting region and Xray radiation ablating region. The Xray relaxation process and some important physics results such as the N band, O band and 0th spectra versus time and space as well as twodimensional spatial distribution of plasma jet and plasma expansion speed were observed. 
     将4针孔透射光栅阵列和皮秒分幅相机结合,实现了X光辐射时间、空间、能谱三维联合测量,得到了双盘靶初级和次级辐射光谱结构,观测到X光辐射弛豫过程,并得到N带O带和零级光谱强度随时间和空间的变化特征、等离子体喷射二维空间分布、等离子体膨胀速率等重要结果。
短句来源
  等离子体的膨胀
     Plasma expansion produced by excimer laser evaporation of YBa_2Cu_3O_(7-x) target
     准分子激光蒸发YBa_2Cu_3C(7-x)靶产生等离子体的膨胀过程研究
短句来源
     Using two separated collecting electrodes, the velocity of plasma expansion can be obtained.
     采用二个分离的收集极可以测量等离子体的膨胀速度.
短句来源
     By adjusting the thickness of CH layer at different directions, a 1D plasma expansion and desired plasma state can be obtained. More radiation energy to heat the target is not better.
     调整不同方向上的 CH膜厚度 ,可以控制铁等离子体的膨胀方向 ,使它尽可能地达到一维膨胀 ,使得反推出的等离子体密度可以更加准确 ;
短句来源
     Thomson scattering is a powerful diagnostic of laser-produced plasmas because it can provide simultaneously a measurement of the electron density, electron and ion temperatures, plasma expansion velocity, degree of ionization and heat flow with relatively high resolving power.
     Thomson散射是一种主动而无干扰地对等离子体进行诊断的方法 . 它能够以较高的时空分辨率测量等离子体的参数 ,如电子与离子温度、密度以及等离子体的膨胀速度、电离程度、热流等参数 .
短句来源
  “plasma expansion”译为未确定词的双语例句
     The percentage of plasma expansion of HSD group was larger than that of HS group ( P < 0.05 ) and of NS group ( P < 0.01 ),but no significant difference existed between HS and NS groups.
     治疗后HSD组的血浆容量扩充的百分量显著高于NS组(P<0.01)和HS组(P<0.05)。
短句来源
     2) Plasma expansion towards substrate;
     2)等离子体向基片扩散;
短句来源
     The spectral response of the soft X-ray camera is defined to be 0.1-10 keV. Average plasma expansion velocities on the C and Au traget surface measured at a laser power density of about 1014 w/cm2 for were 5,l×107cm/s and 6.1 × 107 cm/s respectively.
     测量在激光功率密度≈10~(14)W/cm~2的情况下进行。
短句来源
     The property that X ray spectra were modified on secondary disk is investigated. The measured results show that the improved double disk targets can basically avoid plasma expansion's effect from primary disks and the spectra from primary disk consist of N and O bands, but the spectra from secondary disk is mostly O band.
     测量结果表明 :这种结构的双盘靶基本上能避免初级盘喷射等离子体的影响 ,初级盘后向辐射的 X光谱具有明显的 N和 O带谱结构 ,而次级辐射的 X光谱主要以 O带为主
短句来源
     Using X-ray ablative self-similar solution, the scaling law for plasma expansion effect on transport is obtained.
     利用X光烧蚀的自相似解,得到等离子体对输运产生影响的定标公式。
短句来源
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  plasma expansion
Plasma expansion in a long channel of the anode electrode of a glow discharge excited in the forevacuum pressure range is studied.
      
Plasma Expansion in the Anode Emission Channel of an Electron Source
      
It is shown that the relativistic kinetics of the plasma expansion at the time of decoupling of the radiation from the matter leads to transfer of energy from the photon component of the plasma to the electron component.
      
Nanoparticle formation using a plasma expansion process
      
This result is obtained on the basis of amicroscopic theory which does not rely on expansions in a small parameter such as the plasma expansion parameter.
      
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Focusing the TEA CO2 laser pulse onto a metal target in the vacuum cell, the backward jet of plasma produced by laser pulse can create electric pulse between target and cellwall. The effects of beam focusing and vacuum condition on the conversion are investigated experimentally. The maximum output voltage is 300 V when the peak power density of laser pulse is 1.4x109 W/cm2. Over-all efficiency is 0.01%. Using two separated collecting electrodes, the velocity of plasma expansion can be obtained.

用TEA CO_2激光脉冲聚焦在真空池中的金属靶上,激光产生等离子体的反向喷射会在器壁和金属靶之间产生电压脉冲.实验研究了光束聚焦情况和真空度对光电转换效应的影响.当峰值功率密度为1.4×10~9瓦/厘米~2时,最大脉冲输出电压为300伏,总体效率为0.01%.采用二个分离的收集极可以测量等离子体的膨胀速度.

The incidence of eclampsia in Beijing Obstetrics and Gynecology Hospital was 0.12% in1960~1965, and markedly reduced to 0.07% in 1981~1982. In the same period of time, both maternal and perinatal mortality rates went down from 4.2% and 16.2% to zero respectively. After 1981, the main method of treatment has changed from using heavy sedatives to large dose of magnesium sulfate through intravenous drips with plasma expansion. Cesarean section has been the preference whenever an urgent termination of pregnancy...

The incidence of eclampsia in Beijing Obstetrics and Gynecology Hospital was 0.12% in1960~1965, and markedly reduced to 0.07% in 1981~1982. In the same period of time, both maternal and perinatal mortality rates went down from 4.2% and 16.2% to zero respectively. After 1981, the main method of treatment has changed from using heavy sedatives to large dose of magnesium sulfate through intravenous drips with plasma expansion. Cesarean section has been the preference whenever an urgent termination of pregnancy was indicated. The cesarean section rate increased to 50% in 1981~1982.The prevention and treatment of eclampsia and its indication for cesarean section are subsequently discussed.

北京妇产医院子痫的发病率由1960~1965年的0.12%,降至1981~1982年的0.07%(P<0.01),同时期产妇死亡率由4.2%降至0,围产儿死亡率由16.2%降至0。治疗方法从1981年的定时给强镇静剂,改为静滴大量硫酸镁和血浆扩容,并不失时机的选用剖腹产终止妊娠。剖腹产使用率1981~1982年达50%。 讨论了子痫的预防、治疗和剖腹产的应用。

Space-time resolved X-ray photograms of carbon (4671A thick with substrate) and gold (15μm in thickness) planar targets were obtained using a pinhole coupled to a soft X-ray streak camera. The planar targets were irradiated with laser (λ = 1.06 μm) pulses of about 100 ps duration from a LF-12 Nd: glass laser. The spectral response of the soft X-ray camera is defined to be 0.1-10 keV. Average plasma expansion velocities on the C and Au traget surface measured at a laser power density of about 1014 w/cm2...

Space-time resolved X-ray photograms of carbon (4671A thick with substrate) and gold (15μm in thickness) planar targets were obtained using a pinhole coupled to a soft X-ray streak camera. The planar targets were irradiated with laser (λ = 1.06 μm) pulses of about 100 ps duration from a LF-12 Nd: glass laser. The spectral response of the soft X-ray camera is defined to be 0.1-10 keV. Average plasma expansion velocities on the C and Au traget surface measured at a laser power density of about 1014 w/cm2 for were 5,l×107cm/s and 6.1 × 107 cm/s respectively.

利用软X射线条纹相机与针孔成象装置相结合,测得了碳、金平面靶靶面X射线时、空分辨图象,从而推算出靶面等离子体膨胀平均速度分别为(碳):5.11×10~7cm/s,(金):6.13×10~7cm/s。实验用1.06μm的钕玻璃激光轰击靶面,X射线能谱范围为0.1—10keV。测量在激光功率密度≈10~(14)W/cm~2的情况下进行。

 
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