Abstract: In at least one embodiment an X-ray source includes an electron source configured to emit electrons, an acceleration set-up configured to accelerate the emitted electrons and a transmission window downwards of the acceleration set-up, the transmission window configured to let through X-rays generated by the accelerated electrons, wherein the transmission window incudes a carbon carrier, and wherein the carbon carrier includes sp2-hybridized carbon.

Abstract: In an embodiment an ionization detector includes a gate-insulator-substrate electron-emission structure (GIS-EE) configured to emit low-energy electrons, a sample chamber configured for at least one gas to be detected, the sample chamber being adjacent to the GIS-EE and a measuring unit configured to detect and/or select charged particles, wherein the charged particles are due to the emitted electrons and/or comprise the emitted electrons.

Abstract: In an embodiment a method for operating a radiation detection system having at least one radiation detector and at least one signal filter includes supplying an input signal to the at least one signal filter by the at least one radiation detector, the input signal having step-shaped signal rises, each step-shaped signal rise having a rise time, determining the rise time of a respective step-shaped signal rise, specifying a waiting time for the respective step-shaped signal rise in each case such that the waiting time is greater than or equal to the rise time of the respective step-shaped signal rise and producing an output signal of the at least one signal filter, data point pairs of the input signal being processed in which a time interval of data points from each other is equal to the waiting time for the respective step-shaped signal rise, wherein at least 80% of rise times of the step-shaped signal rises lie between 10 ns and 800 ns inclusive, and wherein the at least one radiation detector includes a sil

Abstract: A device for generating a source current of charge carriers and a method for stabilizing a source current of charge carriers are disclosed. In an embodiment the device includes at least one field emission element configured to emit charge carriers, which lead to an emission current in the field emission element, at least one extraction electrode configured to apply an extraction voltage in order to extract the charge carriers from the field emission element, wherein a first part of the extracted charge carriers contributes to the source current, and a second part of the extracted charge carriers impinges on the extraction electrode and leads to an extraction current in the extraction electrode and a control device configured to reduce fluctuations of a controlled variable Q which is a characteristic for the source current, wherein Q is a function of a difference between the emission current and the extraction current.

Abstract: A device for generating a source current of charge carriers by a field emission and a method stabilizing a source current of charge carriers emitted by a field emission element are disclosed. In an embodiment the device includes at least one field emission element from which the charge carriers emerge during operation, which lead to an emission current in the field emission element, at least one extraction electrode in order to extract the charge carriers from the field emission element, wherein a first part of the extracted charge carriers contributes to the source current, and a second part of the extracted charge carriers impinges on the extraction electrode and leads to an extraction current in the extraction electrode, an additional electrode on which the source current of charge carriers impinges at least in part and which contributes to an electrode current in the additional electrode.

Abstract: An X-ray radiation passage window can be used for a radiation detector. The X-ray radiation passage window for a radiation detector includes a radiation-transmissive window element. The radiation-transmissive window element contains graphene. Furthermore, a radiation detector including an X-ray radiation passage window, a method for producing an X-ray radiation passage window and a use of graphene are disclosed.

Abstract: A device for a radiation detector includes a main body, which includes a material G and is at least partially provided with a coating. The coating has at least a first layer with a material A1. The material G of the main body can be excited by a primary radiation impinging on the coating, so that an x-ray fluorescence radiation is produced with an x-ray fluorescence spectrum, which has a maximum MG at an energy EG. Furthermore, at an energy E1, the material A1 has an absorption edge. In this case, the material A1 is chosen such that the relationships E1<EG and EG?E1?4 keV apply. Also specified is a radiation detector, which has the device and a detector element, which is suitable for the detection of the primary radiation.

Abstract: A sensor head for an X-ray detector is specified. The sensor head includes a first conductor carrier having a frontal face, and a sensor element sensitive to X-ray radiation. The sensor element is arranged on the frontal face of the first conductor carrier, is electrically conductively connected to conductors of the first conductor carrier and has a detection area. Furthermore, the sensor head includes contact elements electrically conductively connected to the sensor element via the first conductor carrier and bonding wires that electrically conductively connect the first conductor carrier to the contact elements. The sensor element is electrically conductively connected to the contact elements. In a plan view of the detection area, the detection area at least partly covers the bonding wires.

Abstract: A device for a radiation detector includes a main body, which includes a material G and is at least partially provided with a coating. The coating has at least a first layer with a material A1. The material G of the main body can be excited by a primary radiation impinging on the coating, so that an x-ray fluorescence radiation is produced with an x-ray fluorescence spectrum, which has a maximum MG at an energy EG. Furthermore, at an energy E1, the material A1 has an absorption edge. In this case, the material A1 is chosen such that the relationships E1<EG and EG?E1?4 keV apply. Also specified is a radiation detector, which has the device and a detector element, which is suitable for the detection of the primary radiation.