Abstract:
A method for X-Ray Scattering material analysis, in particular Small Angle X-ray Scattering material analysis for generating and directing an incident X-ray beam along a propagation direction to a sample held in a sample environment executing a sample measurement process. An apparatus adapted to carry out such a method is also disclosed.
Abstract:
The invention relates to X-ray analytical instruments (RX), more precisely a device for providing a high energy X-ray beam, typically above 4 keV, for X-ray analysis applications. The device comprises an X-ray tube with a turning anode and an X-ray lens for shaping the beam.
Abstract:
The invention relates to X-ray analytical instruments (RX), more precisely a device for providing a high energy X-ray beam, typically above 4 keV, for X-ray analysis applications. The device comprises an X-ray tube with a turning anode and an X-ray lens for shaping the beam.
Abstract:
La présente invention concerne un ensemble optique réflectif multicouche (10) à gradient latéral dont la surface réfléchissante est destinée à réfléchir des rayons X incidents sous faible angle d'incidence en produisant un effet optique bidimensionnel, caractérisé par le fait que ladite surface réfléchissante est constituée d'une surface unique, ladite surface réfléchissante étant conformée selon deux courbures correspondant à deux directions différentes. La présente invention concerne également un procédé de fabrication d'un tel ensemble optique, caractérisé en ce que le procédé comprend le revêtement d'un substrat présentant déjà une courbure, et la courbure de ce substrat selon une deuxième direction différente. L'invention concerne enfin un dispositif de génération et de conditionnement de rayons X pour des applications de réflectométrie RX dispersive en angle comprenant un ensemble optique tel que mentionné ci-dessus couplé à une source rayons X de telle sorte que les rayons X émis par la source sont conditionnés en deux dimensions afin d'adapter le faisceau émis par la source à destination d'un échantillon, les rayons X ayant des angles d'incidences différents sur l'échantillon considéré.
Abstract:
One of the aspects of the invention relates to a method for altering the reflective qualities of desired regions of a multi-layered structure (30) which is exposed to radiation of a given wavelength value and for modifying said radiation in a desired manner by means of reflection, said alteration method involving the exposure of desired regions of the multi-layered structure to a beam (20) of energy, characterized in that the inventive method includes control of the exposure of the desired regions of the multi-layered structure to the beam of particles, whereby the reflectivity peak of each region of the structure can be shifted in a desired manner within the wavelength spectrum. A second aspect of the invention relates to a reflective lithographic mask and a mirror for X-rays carried out according to said method, in addition to the use of said method for rectifying the optical properties of a multi-layered structure.
Abstract:
L'invention concerne selon un premier aspect un procédé d'altération des propriétés réflectives de régions désirées d'une structure multicouche (30) destinée à être exposée à un rayonnement de longueur d'onde donnée et à modifier de manière désirée ledit rayonnement par réflexion, ledit procédé d'altération mettant en oeuvre l'exposition de la structure à un faisceau (20) énergétique, caractérisé en ce que le procédé comprend le contrôle de l'exposition des régions désirées de la structure multicouche audit faisceau de particules, de manière à déplacer de manière désirée dans le spectre de longueur d'onde la valeur du pic de réflectivité de chaque région de la structure. L'invention concerne selon un second aspect un masque réflectif de lithographie, un miroir pour rayons X, réalisés par un tel procédé, et l'utilisation de ce procédé pour rectifier les propriétés optiques d'une structure multicouche.
Abstract:
The invention refers to an X-ray scattering apparatus (10), comprising: - a sample vacuum chamber (26); - a sample holder (20) placed inside the sample vacuum chamber (26) for aligning and/or orienting a sample (18) to be analyzed by X-ray scattering; - an X-ray beam delivery system (11) comprising a 2D X-ray source and a 2D monochromator and being arranged upstream of the sample holder (20) for generating and directing an X-ray beam along a beam path in a propagation direction (Y) towards the sample holder (20); - an X-ray detector (22), placed inside a diffraction chamber connected to the sample vacuum chamber (26), wherein the X-ray detector (22) is arranged downstream of the sample holder (20) and is movable, in particular in a motorized way, along the propagation direction such as to detect the X-ray beam and X-rays scattered at different scattering angles from the sample (18); - wherein the X-ray beam delivery system (11) is configured to focus the X-ray beam onto a focal spot on or near the X-ray detector (22) when placed at its distal position having the largest distance from the sample holder (20) or to produce a parallel beam, - a Bonse Hart monochromator module (12) positioned upstream of the sample holder (20) and being equipped with a motorized monochromator holder; - a Bonse Hart analyzer module (14) positioned downstream of the sample holder (20) and being equipped with a motorized analyzer holder (14a); wherein both the motorized monochromator holder and the motorized analyzer holder (14a) are configured such as to simultaneously position their respective modules (12, 14) in an active position in the X-ray beam for USAXS measurements and in an inactive position out of the X-ray beam for SAXS measurements, characterized in that the X-ray scattering apparatus (10) furthermore comprises a storage chamber (32) integral with or connected to the sample vacuum chamber (26) and/or the diffraction chamber, and that the motorized analyzer holder (14a) is furthermore configured to position the Bonse Hart analyzer module (14) in a storage position in the storage chamber (32). The invention furthermore refers to an X-ray scattering method carried out using the X-ray scattering apparatus.
Abstract:
The invention relates to a method for X-Ray Scattering material analysis, in particular Small Angle X-ray Scattering material analysis, comprising: - generating and directing an incident X-ray beam along a propagation direction (X) to a sample held in a sample environment; - executing a sample measurement process comprising the following steps: o determining a distribution of X rays scattered from said sample by means of a area detector (10) arranged downstream of said sample environment; and o determining an intensity (It) of a beam of X rays transmitted through said sample by means of said detector (10); - executing a sample data treatment process comprising the following step: o determining a corrected scattered X-ray distribution by applying to said scattered X-ray distribution a correction which depends on said transmitted intensity; and - executing a data analysis process comprising the following step: o determining at least one structural characteristic of said sample on the basis of said corrected scattered X-ray distribution; characterized in that - acquisition of said scattered and said transmitted X-rays is divided into a plurality of acquisition periods, wherein each acquisition period (T acq ) is shorter than or equal to a previously determined maximum acquisition time (T max ) in such a way that said detector (10) operates in a linear range; - said detector (10) measures individual detector image frames containing signals of said scattered and said transmitted X-rays, wherein each individual detector image frame is measured during one among said plurality of acquisition periods; - said individual detector image frames are added up to a total detector image frame in a computer connected to said detector (10); and - said determination of said at least one structural characteristic of said sample is realized based on an absolute scattered X-ray distribution obtained on the basis of said total detector image frame. The invention furthermore relates to an apparatus adapted to cany out such a method.
Abstract:
The invention relates to an energy-dispersive X-ray reflectometry system for analyzing a specimen, comprising: a source (1) for emitting an X-ray beam, said source (1) being coupled to an optical collection device (2) comprising means for focusing the beam emitted by the source (1) with a spot size measured in two directions of less than 100 µm and at a given angle of incidence to the specimen; a detection device (3) for measuring the intensity of the X-ray beam reflected by the specimen as a function of the energy of the X-rays over a predetermined measurement energy range, characterized in that the source (1) includes means for emitting an X-ray beam with a polychromatic spectrum of energies below 3 keV and in that the optical collection device (2) is placed relative to the specimen so as to focus the beam at a fixed angle of incidence in order for the projection of the spot on the specimen to have an elongation factor of less than 10.
Abstract:
L'invention concerne un système (1) de délivrance de faisceau de rayons X comprenant un bloc source (100) émettant un faisceau source de rayons X, des moyens de conditionnement (500) permettant de conditionner le faisceau source en direction d'un échantillon. Le système (1) comporte des moyens de stabilisation (800) agencés de manière à stabiliser thermiquement une zone du système (1) située en aval du bloc source (100), pour limiter des transferts thermiques vers les moyens de conditionnement en vue de prévenir des perturbations thermiques au niveau des moyens de conditionnement (500).