公开(公告)号：US20140252240A1

公开(公告)日：2014-09-11

申请号：US13789327

申请日：2013-03-07

Applicant: LAWRENCE LIVERMORE NATIONAL SECURITY, LLC

Inventor： Kevin L. Baker

IPC: G01N23/05

CPC classification number: G01N23/05 ,  G01N23/00 ,  G01N23/005 ,  G01N23/025 ,  G01N23/04 ,  G01N23/06 ,  G01N23/09 ,  G21K2201/068 ,  G21K2207/005

Abstract: A neutron imaging system detects both the phase shift and absorption of neutrons passing through an object. The neutron imaging system is based on either of two different neutron wavefront sensor techniques: 2-D shearing interferometry and Hartmann wavefront sensing. Both approaches measure an entire two-dimensional neutron complex field, including its amplitude and phase. Each measures the full-field, two-dimensional phase gradients and, concomitantly, the two-dimensional amplitude mapping, requiring only a single measurement.

Abstract translation: 中子成像系统检测通过物体的中子的相移和吸收。 中子成像系统基于两种不同的中子波前传感器技术：2-D剪切干涉测量和Hartmann波前感测。 这两种方法测量了整个二维中子复数场，包括其幅度和相位。 每个都测量全场二维相位梯度，同时测量二维幅度映射，仅需要一次测量。

公开(公告)号：US20070076837A1

公开(公告)日：2007-04-05

申请号：US11449374

申请日：2006-06-08

Applicant: Sang Cho ,  Chang Lee ,  Hark Kim ,  Young Kim

Inventor： Sang Cho ,  Chang Lee ,  Hark Kim ,  Young Kim

IPC: G21C7/00

CPC classification number: G21K1/062 ,  B82Y10/00 ,  G21K1/16 ,  G21K2201/061 ,  G21K2201/067 ,  G21K2201/068 ,  H05H3/06

Abstract: A polarized neutron guide for separating neutrons into polarized neutrons while minimizing loss of the neutrons is provided. The polarized neutron guide includes a body, the first space and the second space, and a neutron separation space. The body includes super mirrors coated with a neutron-reflective thin film and the first and second spaces are formed by the first plate inside the body. The neutron separation space is formed by the second plate disposed at the entry of the first space and the third plate disposed at the entry of the second space. Spin-up polarized neutrons and spin-down polarized neutrons are simultaneously separated and transferred in the first and second spaces, respectively. Therefore, with minimum loss of the neutrons, the spin-up polarized neutrons and the spin-down polarized neutrons are effectively separated and collected.

Abstract translation: 提供了用于将中子分离成极化中子同时最小化中子损失的极化中子引导件。 极化中子引导件包括主体，第一空间和第二空间以及中子分离空间。 身体包括涂有中子反射薄膜的超级镜，第一和第二空间由身体内的第一个板形成。 中子分离空间由设置在第一空间的入口处的第二板和设置在第二空间的入口处的第三板形成。 旋转极化中子和自旋向下极化中子分别在第一和第二空间中分离并转移。 因此，以最小的中子损失，有效地分离和收集了自旋向极化中子和自旋向下极化中子。

公开(公告)号：US5936255A

公开(公告)日：1999-08-10

申请号：US890623

申请日：1997-07-09

Applicant: Kenji Nakanishi ,  Akira Tsukamoto ,  Keiichi Tanabe

Inventor： Kenji Nakanishi ,  Akira Tsukamoto ,  Keiichi Tanabe

IPC: G01N23/20 ,  G01N23/205 ,  G01N23/223 ,  G21K1/06 ,  G21K4/00 ,  G01N23/207

CPC classification number: G21K1/06 ,  G21K2201/068

Abstract: An X-ray, neutron or electron diffraction method, which is devoid of the defects of conventional diffraction apparatus using an imaging plate, which can analyzing a sample, in a non-destructive mode without contact and with a good S/N ratio, even when the sample significantly generates fluorescence or scattered X-rays. The method includes the steps of irradiating a predetermined area of the sample with an X-ray, neutron or electron beam whose axis is oriented at a fixed direction to obtain a diffraction ray, rotating the sample while maintaining the irradiated predetermined area substantially unchanged and while maintaining the angle between the axis of the X-ray, neutron or electron beam relative to the tangential plane of the predetermined area substantially unchanged, forming an image of the diffraction ray from the sample during the rotation of the sample through every predetermined angle using an imaging plate, reading a data of the image formed on the imaging plate to obtain an output data for each rotation of the sample through the predetermined angle, and processing the output data to obtain desired analysis information.

Abstract translation: 一种X射线，中子或电子衍射方法，其不含常规的使用成像板的衍射装置的缺陷，该成像板能够以非破坏性的方式分析样品，无接触和良好的S / N比，甚至 当样品显着产生荧光或散射的X射线。 该方法包括以下步骤：用X轴，中子或电子束照射样品的预定区域，该X射线，中子或电子束的轴线沿固定方向取向以获得衍射光线，使样品旋转，同时保持照射的预定面积基本上不变，同时 保持X射线，中子或电子束相对于预定面积的切向面之间的角度基本上不变，在样品旋转期间通过每个预定角度形成来自样品的衍射光线的图像，使用 读取形成在成像板上的图像的数据，以获得用于样品的每次旋转的预定角度的输出数据，并处理输出数据以获得期望的分析信息。

公开(公告)号：US5880478A

公开(公告)日：1999-03-09

申请号：US859781

申请日：1997-05-19

Applicant: David John Bishop ,  Peter Ledel Gammel ,  Eric D Isaacs ,  Philip Moss Platzman

Inventor： David John Bishop ,  Peter Ledel Gammel ,  Eric D Isaacs ,  Philip Moss Platzman

IPC: G21K1/00 ,  G21K1/06 ,  H05H3/00 ,  G01N23/00

CPC classification number: G21K1/06 ,  G21K2201/068

Abstract: The specification describes a refractive lens for focusing cold neutrons. It comprises a plurality of concave lens elements made from materials with low neutron absorption.

Abstract translation: 本说明书描述了用于聚焦冷中子的折射透镜。 它包括由具有低中子吸收的材料制成的多个凹透镜元件。

公开(公告)号：US4886964A

公开(公告)日：1989-12-12

申请号：US245687

申请日：1988-09-16

Applicant: David E. Pritchard ,  David W. Keith

Inventor： David E. Pritchard ,  David W. Keith

IPC: G21K1/06

CPC classification number: G21K1/06 ,  G21K2201/062 ,  G21K2201/068

Abstract: The optical system includes a matter diffraction grating and an atomic beam intersecting the grating at a grazing angle of incidence. The grazing incidence angle should be less than 10.sup.-2 radians. At such shallow angles of incidence, neutral atomic beams are diffracted by conventional diffraction gratings. A suitable grating has a local flatness of 10 Angstroms and has 2400 lines per millimeter. Preferred embodiments include interferometers, beam splitters and combiners, and velocity selectors.

Abstract translation: 光学系统包括物体衍射光栅和在掠射入射角与光栅相交的原子束。 掠入射角应小于10-2弧度。 在这种浅入射角处，中性原子光束被常规衍射光栅衍射。 合适的光栅具有10埃的局部平坦度，每毫米2400线。 优选实施例包括干涉仪，分束器和组合器以及速度选择器。

公开(公告)号：US4429411A

公开(公告)日：1984-01-31

申请号：US362172

申请日：1982-03-25

Applicant: Robert K. Smither

Inventor： Robert K. Smither

IPC: G21K1/06 ,  G01N23/20

CPC classification number: G21K1/06 ,  G21K2201/062 ,  G21K2201/064 ,  G21K2201/068

Abstract: A crystal diffraction instrument or diffraction grating instrument with an improved crystalline structure or grating spacing structure having a face for receiving a beam of photons or neutrons and diffraction planar spacing or grating spacing along that face with the spacing increasing progressively along the face to provide a decreasing Bragg diffraction angle for a monochromatic radiation and thereby increasing the usable area and acceptance angle. The increased planar spacing for the diffraction crystal is provided by the use of a temperature differential across the crystalline structure, by assembling a plurality of crystalline structures with different compositions, by an individual crystalline structure with a varying composition and thereby a changing planar spacing along its face, and by combinations of these techniques. The increased diffraction grating element spacing is generated during the fabrication of the diffraction grating by controlling the cutting tool that is cutting the grooves or controlling the laser beam, electron beam or ion beam that is exposing the resist layer, etc. It is also possible to vary this variation in grating spacing by applying a thermal gradient to the diffraction grating in much the same manner as is done in the crystal diffraction case.

Abstract translation: 一种具有改进的晶体结构或光栅间隔结构的晶体衍射仪器或衍射光栅仪器，其具有用于接收光子束或中子束的面以及沿着该面的衍射平面间隔或光栅间隔，间隔沿着面逐渐增加以提供递减 用于单色辐射的布拉格衍射角，从而增加可用面积和接受角度。 通过使用具有不同组成的多个晶体结构，通过具有变化的组成的单个结晶结构，从而沿着其形成改变的平面间距，通过使用结晶结构上的温度差异来提供衍射晶体的增加的平面间隔 面对，并通过这些技术的组合。 通过控制切割凹槽或控制激光束的切割工具，暴露抗蚀剂层的电子束或离子束等，在制造衍射光栅期间产生增加的衍射光栅元件间隔。也可以 通过以与晶体衍射情况中所做的相同的方式对衍射光栅施加热梯度来改变光栅间距的变化。

公开(公告)号：US4386274A

公开(公告)日：1983-05-31

申请号：US205842

申请日：1980-11-10

Applicant: Saul Altshuler

Inventor： Saul Altshuler

IPC: B01D59/34 ,  G21K1/06 ,  H01J39/34

CPC classification number: G21K1/06 ,  B01D59/34 ,  G21K2201/068

Abstract: The separation of isotopes is accomplished by scattering a beam of particles from a standing electromagnetic wave. The particles may consist of either atoms or molecules, each having a desired isotope and at least one other. The particle beam is directed in a normal direction against the standing wave, which may be a light wave. The particles; that is, the atomic or molecular quantum-mechanical waves, see basically a diffraction grating corresponding to the troughs and peaks of the electromagnetic wave. The frequency of the electromagnetic wave substantially corresponds to an internal energy level-transition of the desired isotope. Accordingly, the desired isotope is spatially separated by being scattered or diffracted.

Abstract translation: 同位素的分离是通过从静止的电磁波中散射粒子束来实现的。 颗粒可以由原子或分子组成，每个分子具有期望的同位素和至少一个其它的。 粒子束相对于驻波而在正常方向上被引导，其可以是光波。 颗粒; 也就是原子或分子量子力学波，基本上看到对应于电磁波的波峰和峰值的衍射光栅。 电磁波的频率基本上对应于所需同位素的内部能级转变。 因此，所需的同位素在空间上被散射或衍射分离。

公开(公告)号：US3588509A

公开(公告)日：1971-06-28

申请号：US3588509D

申请日：1968-07-26

Applicant: MITSUBISHI ELECTRIC CORP

Inventor： YANAGISHITA KAZUO ,  KANO TAKANORI

IPC: G01N23/207 ,  G21K1/06 ,  G21G3/04

CPC classification number: G01N23/2073 ,  G21K1/06 ,  G21K2201/062 ,  G21K2201/068

Abstract: A BEAM OF NEUTRONS PASSES THROUGH AN ENTRANCE HOLE BORED IN A STATIONARY SHIELD BLOCK AND IS REFLECTED BY A ROTATABLE CRYSTAL TO FORM A BEAM OF MONOCHROMATIC NEUTRONS. AFTER HAVING BEEN DEFINED BY A COLLIMATOR, THE BEAM OF MONOCHROMATIC NEUTRONS IS REFLECTED BY ANOTHER CRYSTAL WHICH IS MOVABLY DISPOSED IN THE SHIELD BLOCK THROUGH AN EXIT HOLE IN THE SHIELD BLOCK. IN ORDER TO SELECTIVELY EXTRACT BEAMS OF MONOCHROMATIC NEUTRONS WHICH ARE DIFFERENT IN NEUTRON WAVELENGTH, THE FIRST CRYSTAL IS ROTATABLY MOUNTED AND THE SECOND CRYSTAL IS ALSO ROTATABLY MOUNTED AS WELL AS BEING MOUNTED FOR TRANSLATIONAL MOVEMENT TOWARD AND AWAY FROM THE EXIT HOLE ALONG A GUIDE RAIL.

公开(公告)号：US3067365A

公开(公告)日：1962-12-04

申请号：US10160361

申请日：1961-04-07

Applicant: SAILOR VANCE L ,  AICHROTH RICHARD W

Inventor： SAILOR VANCE L ,  AICHROTH RICHARD W

IPC: G01N23/09 ,  G21K1/06

CPC classification number: G01N23/09 ,  G21K1/06 ,  G21K2201/068

公开(公告)号：US20180250524A1

公开(公告)日：2018-09-06

申请号：US15970001

申请日：2018-05-03

Applicant: NEUBORON MEDTECH LTD.

Inventor： Yuanhao LIU ,  Weilin CHEN ,  Peiyi LEE

IPC: A61N5/10 ,  G21K1/06 ,  G21K1/12

CPC classification number: A61N5/10 ,  A61N5/1078 ,  A61N2005/109 ,  A61N2005/1094 ,  A61N2005/1095 ,  G21K1/067 ,  G21K1/10 ,  G21K1/12 ,  G21K2201/068 ,  H05H3/06 ,  H05H6/00 ,  H05H2007/125 ,  H05H2277/11

Abstract: In order to improve flux and quality of neutron sources, the disclosure provides a beam shaping assembly for neutron capture therapy includes: a beam inlet; a target, wherein the target has nuclear reaction with an incident proton beam from the beam inlet to produce neutrons; a moderator adjoining to the target, wherein the neutrons are moderated by the moderator to epithermal neutron energies, the moderator includes a main body and a supplement section surrounding the main body, the main body and the supplement section form at least a tapered structure; a reflector surrounding the moderator; a thermal neutron absorber adjoining to the moderator; a radiation shield arranged inside the beam shaping assembly, wherein the radiation shield is used for shielding leaking neutrons and photons so as to reduce dose of the normal tissue not exposed to irradiation; and a beam outlet.