主脉冲

脉宽15ns的主脉冲激光驱动产生的混合区宽度达到250μm，混合区宽度与RT扰动截止波长比值为67。

The mixing width of 250 microns is yielded in the case of the main pulse with the duration of 15 ns .

足够高的激光对比度可以保证在主脉冲到达之前，避免预脉冲在待作用的靶面上形成明显的预等离子体。

Laser pulse with high contrast ratio can prevent significant plasma formation on solid targets prior to the arrival of the main pulse .

预主脉冲辐照平面靶产生X射线激光的自相似模型

A self similarity model of slab X ray laser using the prepulse technique

利用自相似方法，定量地描述了预主脉冲辐照平面靶产生X射线激光的物理过程。

Using self similarity method , the physics of slab X ray laser using the prepulse technique is quantitatively described .

以预主脉冲方式工作的激励软X光激光毛细管放电装置，其预主脉冲先后触发时间间隔的控制，直接影响了泵浦能量转换为X射线激光能量的效率。

When the capillary discharge device runs with pre-pulse and main-pulse , its efficiency of energy transferring by bumping to X-ray laser rises . The control of trigger delay time from pre-pulse to main-pulse is very important for this device .

激励软X光激光的毛细管预-主脉冲放电装置

Device of capillary discharge with pre-pulse and main pulse to excite soft X-ray laser

反向电流仅与电极本身有关，它决定了高频群脉冲电化学加工的主脉冲频率；

The reversed current , which decides the frequency of main pulse , is influenced chiefly by electrochemical properties of the electrode .

实验证明，尾随主脉冲之后的次脉冲串是导致低氖压微型管坪缩短的根源；

The experiments showed : ( 1 ) the secondary pulse series following the primary pulse is a root cause to shorten plateau ;

定时器是雷达系统的重要部分，它为雷达全机提供所需的各种主脉冲定时信号和波门定时信号。

Timer is an important part of Radar system , it affords system all the AP timing signals and wave gate timing signals .

排气阀门的关闭直接造成参与气泡振荡的气体质量的减少，第二气泡脉冲相对主脉冲明显减小。

When the exhaust valve is closed , the gas with the bubble oscillation reduces , causing the bubble impulse lower the pressure impulse obviously .

在测试仪器精度极限范围内，主脉冲与诊断短脉冲同步的时间抖动<100ps。

The jitter time between the main pulse and the diagnosis pulse is less than 100 ps , close to the transmission-limited value of measure .

在其他实验参量不变的情况下，改变主脉冲电流的波形，比较了激光尖峰与背景光的相对位置。

Changing the wave form of the main current while other experimental parameters being unchanged , the laser spike and the position of background light were contrasted .

获得了产生激光的最佳气压和最佳电流幅值。其次，利用外接电容的方法，观测不同形状的主脉冲电流对激光产生的影响。

Secondly , using the technique of connecting the capacitance , got the information about the effect of different shape of the main-pulse current to the laser spike .

结果表明，在高频群脉冲电源作用下，选择较高的主脉冲频率，可获得良好的加工质量。

It is indicated from the results that effected by the high frequency group pulse power , higher machining quality is obtained by choosing higher main pulse frequency .

研究发现气泡效应之所以会随着传播时间和距离的增大而放大是由于气泡能量主要集中在低频位置，而主脉冲能量在整个频带内的能量分布比较均匀。

The reason that the bubble effect enlarged is that bubble energy is concentrated in the low position . And the energy of main pulse distributes uniformly throughout the band .

实验结果表明，激光产生于主脉冲电流波形的前沿，此时的主脉冲电流是其峰值的65%&75%。

The experimental results show that the soft x-ray laser is produced at the rise-time of the main discharge current which is 65 % & 75 % of the peak at the lasing time .

研究人员称，至于密度这么高的行星是如何形成的，这一点尚不清楚，但它很可能是一颗被主脉冲星剥夺了大气的白矮星留下的晶体残骸。

How such a dense planet formed is unclear , the researchers say , but it 's probably the crystalline vestige of a white dwarf star whose atmosphere was stripped away by the parent pulsar .

研究在主脉冲电流幅值相同时，气压对激光产生的影响，以及在同一气压下，幅值不同的主脉冲电流对激光产生的影响。

The effect of the main-pulse current which have the same amplitude in different Ar pressure and the main-pulse current which have different amplitude in the same Ar pressure to the laser spike have been researched .

首先，系统的研究了主脉冲电流幅值对激光增益的影响，在给定气压下，找到了最佳的主脉冲电流幅值，以实现更高增益的激光输出。

Firstly , the impact of the amplitude for main pulse current on laser gain was studied , the optimal amplitude was found when the given Ar pressure , and this is in favor of realizing higher gain coefficient .

给出了脉冲电化学加工极间平衡间隙的数学模型，并据此讨论了高频群脉冲电化学加工中，电源主脉冲频率与平衡加工间隙的关系。

The mathematical model of balanceable inter-electrode gap in high frequency group pulse electrochemical machining is presented . Based on the model , the relationship between the main pulse frequency of supply power and the balanceable inter-electrode gap is discussed .

理论模拟还表明，采用1%左右的预脉冲强度并对预主脉冲时间间隔进行优化，X光激光的输出能量和能量转换效率将获得大幅度提高。

Theoretical simulation shows that , using 1 % pre-pulse , if appropriate optimization of time interval between pre-and main pulse has been conducted , the output energy of XRL as well as conversion efficiency of energy can be dramatically enhanced .

介绍了主脉冲和预脉冲的产生电路、预主脉冲延时触发的方案以及对预主脉冲的联调结果。

Based on the introduction on circuit of main pulse and pre-pulse , the scheme about the trigger delay between pre-pulse and main pulse is introduced , and the experimental results about the adjustment of main pulse and pre-pulse are given .

对于用于惯性约束聚变的高功率激光器系统来说，主脉冲与预脉冲强度之比（即对比度或信噪比）是衡量系统质量的最重要指标之一。

For high power laser systems , used in an Inertial Confined Fusion ( ICF ) system , the intensity ratio of the main pulse to its predecessors ( ie , the contrast or SNR ) is one of the most important parameters .

结果表明：合理地选择预、主激光脉冲的能量匹配和时间间隔，就可以在较低能量的激光装置上产生较强的X射线激光输出。

The calculations show that reasonably chosen the energy rate and the separation between the prepulse and the main pulse , the higher output of X ray laser produced by the lower drive laser energy can be obtained .

在对多次波进行压制的基础上，进一步通过偏移归位、主能量脉冲反褶积以及剖面能量均衡等处理，可获得更高质量的声地层剖面。

After multiple attenuating , a much higher quality profile can be obtained by using further processing such as migration and main energy spiking deconvolution .

在主振脉冲发生电路的设计上，通过单片机控制可编程定时计数器芯片8254来控制脉冲宽度和脉冲间隔，使脉冲宽度和脉冲间隔在很宽的范围内可以精确调节。

In the design of the main oscillating circuit , the programmable timing counter IC of 8254 is controlled by the single chip computer to adjust the pulse width and interval , which provides the precise adjustment on the pulse width and interval in a wide range .

本实验是在AsterixIV碘激光装置上进行的，实验中主、预脉冲间的时间间隔为5ns。

The experiment was performed at the Asterix IV iodine laser with a prepulse 5 ns before the main pulse .

为了提高电弧挺度，焊接主电流采用脉冲电流。

Main current pulse is used in order to improve stiffness of welding arc .

高性能主变压器，脉冲变压器及电感器。

Can be surface-mounted and reel packingDesigned for high performance main transformer pulse transformer and inductor .

开发低阶煤提质工艺试验线，并对试验线主副管脉冲气流干燥器和其它主要设备进行参数计算。

The line of low-rank coal upgrading technology was designed , and the parameter of test line main and assistant pulse airflow drier and other main equipments was put forward .