Investigation of LaBr3(Ce) detectors at the RITU focal plane
The aims of this master thesis were to determine the absolute detection efficiency of the LaBr3(Ce) detectors installed at the RITU focal plane, to study the effect of planar Ge-detector on the LaBr3(Ce) efficiency and to investigate the possibility of half-life measurements with the detectors in a coincidence setup having distributed recoil ions produced by the RITU separator. Time spectra were collected by moving a point radioactive source from one edge of the implantation detector to the other to imitate the ion distribution from the RITU separator. Simulations have been exploited to explore the time spectra obtained from various ion distribution shapes and for different half-lives. A point source of 152Eu has been utilized to measure the half-life of the first 2+ state of 152Sm. The half-life obtained experimentally was equal to 1.39 ns± 0.08 ns, which agrees with the tabulated value.
MetadataShow full item record
- Pro gradu -tutkielmat 
Showing items with similar title or keywords.
Girka, Anastasiia (2015)Absolute detection efficiency depending upon its position along the beam line is determined for three germanium detectors, that are part of the GREAT spectrometer at the RITU separator focal plane. The efficiency is ...
Solar neutrino detection in liquid xenon detectors via charged-current scattering to excited states Haselschwardt, Scott; Lenardo, Brian; Pirinen, Pekka; Suhonen, Jouni (American Physical Society (APS), 2020)We investigate the prospects for real-time detection of solar neutrinos via the charged-current neutrino-nucleus scattering process in liquid xenon time projection chambers. We use a nuclear shell model, benchmarked with ...
Koivistoinen, Juha (2019)Tässä tutkielmassa esitellään Signed-Volume Gilbert-Johnson- Keerthi törmäystarkastelu-algoritmi. Videopelien fysiikkamoottoreiden, törmäystarkatelun yleinen kulku ja GJK - algoritmi itsessään käydään läpi oleellisimmilta ...
A time-of-flight correction procedure for fast-timing data of recoils with varying implantation positions at a spectrometer focal plane Mallaburn, M.J.; Singh, B.S. Nara; Cullen, D. M.; Hodge, D.; Taylor, M.J.; Giles, M.M.; Barber, L.; Niţă, C.R.; Mihai, R.E.; Mihai, C.; Mărginean, R.; Mărginean, N.; Nobs, C.R.; Gamba, E.R.; Bruce, A.M.; Scholey, Catherine; Rahkila, Panu; Greenlees, Paul; Badran, Hussam; Grahn, Tuomas; Neuvonen, O.; Auranen, Kalle; Bisso, F.; Cox, Daniel; Herzan, Andrej; Julin, Rauno; Konki, Joonas; Lightfoot, A.K.; Pakarinen, Janne; Papadakis, P.; Partanen, Jari; Sandzelius, Mikael; Sarén, Jan; Sorri, Juha; Stolze, Sanna; Uusitalo, Juha; Regan, P.H.; Podolyák, Zs.; Lalkovski, S.; Smith, J.F.; Smolen, M. (Elsevier; North-Holland, 2019)Fast-timing measurements at the focal plane of a separator can suffer from poor timing resolution. This is due to the variations in time-of-flight (ToF) for photons travelling to a given detector, which arise from the ...
IDS Collaboration (American Physical Society, 2016)The levels in 129Sn populated from the β− decay of 129In isomers were investigated at the ISOLDE facility of CERN using the newly commissioned ISOLDE Decay Station (IDS). The lowest 1/2+ state and the 3/2+ ground state ...