Abstract: In an 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, wherein the transmission window is configured to let through X-rays generated by the accelerated electrons, wherein the transmission window is located either in a straight extension of a line-of-flight of the accelerated electrons or off the line-of-flight and past the acceleration set-up, wherein the transmission window comprises a carbon carrier, and wherein the carbon carrier comprises sp2-hybridized carbon.

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: 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 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: 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.