Measurement of Decay of Radioactive and Isomer Nuclei by Spatial and Time Coincidence in the Timepix Pixel Detector
- NázevTitle
- Measurement of Decay of Radioactive and Isomer Nuclei by Spatial and Time Coincidence in the Timepix Pixel DetectorMeasurement of Decay of Radioactive and Isomer Nuclei by Spatial and Time Coincidence in the Timepix Pixel Detector
- Druh výsledkuResult type
- Příspěvek ve sborníkuProceedings paper
- AutořiAuthors
- C. Granja, J. Jakůbek, M. Platkevič, S. Pospíšil, U. Koester
- Klíčová slovaKeywords
- Radioactive nuclei, radiation detection, pixel detector
- KonferenceConference
- XXXIII Workshop Nuclear Physics in Brazil (Brazil, 2010-09-07)
- DOIDOI
- 10.1063/1.3608953
- Časopis / citaceJournal / citation
- In: AIP Conference Proceedings, AIP, 2011, pp. 179-182 · ISSN 0094-243X
- RokYear
- 2011
- JazykLanguage
- eng
- ZáznamyRecords
- ProjektProject
- Centrum experimentální jaderné astrofyziky a jaderné fyzikyCenter of Experimental Nuclear Astrophysics and Nuclear Physics; Fundamentální experimenty ve fyzice mikrosvětaFundamental Experiments in Physics of Microworld
- CitovánoCited by
- 1 (OpenAlex)
- Citace ke staženíDownload citation
- TXT · BibTeX
AbstraktAbstract
The high granularity of the pixel detector allows applying not only temporal but also spatial coincidence technique for background suppression. This is particularly important for scarcely populated nuclei and/or detection under high rate of unwanted/background events. For these different situations two methods were developed using a segmented ionization chamber as trigger: (i) a time-delayed opening (start) of the detector shutter, and (ii) a trigger-driven external clock with varying time delay with the detector shutter open. For these approaches, Timepix was operated in its time mode and in its time-over-threshold mode, respectively. The methods are demonstrated on the detection and decay measurement of 8He and 6He ions as well as of the 7.6 μs 496.2 keV isomer 98mY, respectively.
The high granularity of the pixel detector allows applying not only temporal but also spatial coincidence technique for background suppression. This is particularly important for scarcely populated nuclei and/or detection under high rate of unwanted/background events. For these different situations two methods were developed using a segmented ionization chamber as trigger: (i) a time-delayed opening (start) of the detector shutter, and (ii) a trigger-driven external clock with varying time delay with the detector shutter open. For these approaches, Timepix was operated in its time mode and in its time-over-threshold mode, respectively. The methods are demonstrated on the detection and decay measurement of 8He and 6He ions as well as of the 7.6 μs 496.2 keV isomer 98mY, respectively.