Publication Date:
2012-10-10
Description:
The investigation of the spectral change during a radiation pulse is of high interest. The aim of the work presented is to prove that the emitted X-ray spectrum of a novel X-ray tube [1], developed at PTB as a reference field for pulsed photon radiation, has no time dependency of the spectral distribution during the pulse. Nowadays X-ray tubes are pulsed by switching on and off the HV generator. Therefore, they have a rising edge of about 600 μs until the pre-set acceleration voltage (e.g. 60 kV) is reached. In contrast, the newly developed X-ray tube reduces the rise and fall time by up to a factor of 10 or 60, respectively. This was achieved by designing the X-ray tube as a triode. The X-ray emission of this tube can be switched on and off by switching only the quite low voltage of the additional grid while the high voltage remains constantly on. For the measurements we used a Timepix detector [2] operated in Time of Arrival (ToA) mode. Additionally, the adjustable anal...
Electronic ISSN:
1748-0221
Topics:
Physics
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