公开(公告)号：US06909764B2

公开(公告)日：2005-06-21

申请号：US10035819

申请日：2001-11-08

申请人： Anatoly Maksimchuk ,  Koshichi Nemoto ,  Kirk Flippo ,  Shaoting Gu ,  Sudeep Banerjee ,  Donald Umstadter ,  Gerard Mourou ,  Valery Bychenkov

发明人： Anatoly Maksimchuk ,  Koshichi Nemoto ,  Kirk Flippo ,  Shaoting Gu ,  Sudeep Banerjee ,  Donald Umstadter ,  Gerard Mourou ,  Valery Bychenkov

IPC分类号： G21G1/10 ,  G21G1/12 ,  H05H6/00

CPC分类号： H05H6/00 ,  G21G1/10 ,  G21G1/12

摘要： A system is provided for generating high-energy particles and for inducing nuclear reactions. The system includes a laser and for emitting a laser beam, an irradiation target for receiving the laser beam and producing high-energy particles, and a secondary target for receiving the high-energy particles, thereby inducing a nuclear reaction. A method is also provided including producing a laser beam of high-intensity with an ultra-short pulse duration, irradiating the laser beam onto an irradiation target in order to ionize the irradiation target and produce a collimated beam of high-energy particles, and colliding the collimated beam of high-energy particles onto a secondary target containing a nuclei, thereby inducing a nuclear reaction on the secondary target.

摘要翻译： 提供了一种用于产生高能粒子和诱导核反应的系统。 该系统包括激光和用于发射激光束，用于接收激光束并产生高能粒子的照射目标，以及用于接收高能粒子的次级靶，从而引起核反应。 还提供了一种方法，包括以超短脉冲持续时间产生高强度激光束，将激光束照射到照射目标上，以便使照射目标离子化并产生准能的高能粒子束，并碰撞 高能粒子的准直束到包含核的二次靶上，从而在次级靶上引起核反应。

公开(公告)号：US5606588A

公开(公告)日：1997-02-25

申请号：US508482

申请日：1995-07-28

申请人： Donald Umstadter ,  Jonathan Workman ,  Anatoly Maksimchuk ,  Xinbing Liu

发明人： Donald Umstadter ,  Jonathan Workman ,  Anatoly Maksimchuk ,  Xinbing Liu

IPC分类号： H05G2/00 ,  H05H1/22 ,  H01J35/22

CPC分类号： H05G2/001 ,  G21B1/23

摘要： The present invention provides a system and an apparatus to produce x-rays from plasmas by focusing an intense, short duration optical pulse from a laser onto a target. The concentrated energy contained in the focused laser beam ionizes the target material, raising it to a temperature at which ions are produced in a chain reaction ionization, and x-rays are emitted when ions become de-excited (their electrons change energy level) or free electrons recombine with the ions in the plasma. The method comprises controlling pulse time duration of x-rays emitted from a plasma-forming target by generating a beam of one or more laser pulses; adjusting the intensity of the laser pulse to obtain a desired intensity incident at a surface of the plasma-forming target matter; directing the laser pulse onto the surface of the plasma-forming matter to generate the x-rays having a pulse duration which changes in proportion to a change in the incident laser pulse intensity. In one embodiment, the x-rays are then directed onto a sample target.

摘要翻译： 本发明提供了一种从等离子体产生X射线的系统和装置，其通过将来自激光的强烈的短持续时间的光脉冲聚焦到目标上。 聚焦激光束中所含的浓缩能量将目标材料电离，使其升高到在链式反应电离中产生离子的温度，并且当离子被去激发（它们的电子改变能量水平）时发射X射线，或 自由电子与等离子体中的离子重新结合。 该方法包括通过产生一个或多个激光脉冲的光束来控制从等离子体形成目标发射的x射线的脉冲持续时间; 调整激光脉冲的强度以获得在等离子体形成目标物质的表面入射的所需强度; 将激光脉冲引导到等离子体形成物质的表面上以产生具有与入射激光脉冲强度的变化成比例地变化的脉冲持续时间的x射线。 在一个实施例中，x射线然后被引导到样本目标上。