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- The oscillation is called a laser wakefield because it trails the laser pulse like the wake produced by a motorboat. 这个震?称为雷射尾迹场,因为雷射脉冲的轨迹,就像机船在海面上所产生的船痕。
- Researchers thought that such precise injection was impossible in a laser wakefield accelerator because the accelerating structure is microscopic and short-lived. 研究人员认为在尾迹场加速器中不可能这麽精准的注入电子,因为加速的过程是微观而且短暂的。
- As in a laser wakefield accelerator, when the driver pulse is focused into the plasma, it produces a wakefield bubble (provided that the beam is denser than the plasma). 在雷射尾迹场加速器中,当驱动脉冲聚焦到电浆后,会产生一个尾迹场泡泡(假设电子束的密度比电浆要来的大)。
- The process is the same as in the laser wakefield case, except now the particle beam's electric field does the pushing instead of the laser beam's radiation pressure. 这个过程跟雷射尾迹场的情形一样,只是现在推动电子的,是粒子束的电场而不是雷射光束的辐射光压。
- Electron trapping" is the main acceleration mechanism in the laser wakefield acceleration, and the theoretical analysis indicates that more electrons are trapped when the initial velocity of the electrons are increased. 电子俘获是激光尾波场加速电子的主要机理 ;增大电子的初速度可以使更多的电子被尾波场俘获 .
- Significant progress has been achieved in enhancing the energy and quality of electron beams since the proposal of laser wakefield acceleration by Tajima and Dawson more than 20 years ago. 摘要自从激光尾波场加速电子方案提出以来,经过二十多年的理论和实验研究,人们在激光尾波场加速方面已经取得了重大进步,相继在电子束能量、电子单色性等束流性能上取得重大突破。
- More importantly, they can drive large-amplitude plasma waves, so called the laser wakefields, which can accelerate electrons to the energy of hundreds of MeV in mm-length. 而更重要的是超短激光脉冲可以通过其有质动力激发大振幅的等离子体波(称为激光尾波场),后者可以在毫米空间尺度把电子加速到上百兆电子伏的能量。
- Quasi-monoenergetic electron bunches generated from laser wakefield acceleration 第二讲激光尾波场加速中的准单能电子束的产生
- laser wakefield 激光尾波场
- There is no single laser fit for all purposes. 没有单一种激光器能适用于各种用途。
- How does a laser beam vaporize steel? 激光束是怎样使钢气化的?
- Laser beams are also used in surgery. 激光束还可用于外科手术。
- Laser beams may cauterize and heal ulcers. 激光束可以烧灼和愈合溃疡。
- He monopolizes the laser printer. 他独占了这台激光打印机。
- A laser is a device composed a special material. 激光器这种器件是用特殊材料制成的。
- The laser jet printer is out of order. 这台激光打印机不能正常工作了。
- On a lazy laser raiser lies a laser ray eraser. 在一个懒惰的激光器上放了一个激光消除器。
- The price of the laser printer is too high. 这台激光打印机的价格太高了。
- Can doctors use laser to treat my cataract? 医生可否用激光为我治疗白内障?
- Zhuhai Yuemao Laser Facility Engineering Co., Ltd. 珠海粤茂激光设备工程有限公司。