Temat: 29.40.Mc - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Low Background CdWO₄ Scintillation Detector
Autorzy:: Kasperovych, D.
Danevich, F.
Kobychev, V.
Kropivyansky, B.
Tymoshenko, A.
Powiązania:: https://bibliotekanauki.pl/articles/1030928.pdf
Data publikacji:: 2018-04
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 29.40.Mc
29.30.Kv
Opis:: Low background scintillation setup has been developed that exhibits 3 orders of magnitude lower counting rate of a large volume (2.1 kg) CdWO₄ detector in the energy region 0.5-2.6 MeV, and one order of magnitude above 3 MeV. The background reduction was achieved by application of radiopure passive shield, active plastic-scintillation muon veto placed above the setup and pulse-shape discrimination. Construction of additional plastic scintillation counters is in progress to reduce the residual cosmic muons background. The setup can be applied to develop radiopure scintillators, measure radioactive contamination of materials, carry out small scale low counting experiments.
Źródło:: Acta Physica Polonica A; 2018, 133, 4; 923-927
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Radioactivity Measurement on Dental Resin Composites
Autorzy:: Akkurt, İ.
Ermiş, R.
Baş, P.
Günoğlu, K.
Powiązania:: https://bibliotekanauki.pl/articles/1402383.pdf
Data publikacji:: 2015-08
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 29.30.Kv
29.40.Mc
98.70.Vc
Opis:: Radioactivity is mainly due to natural ones from earth and also from outside of the atmosphere so-called cosmic radiation. Although radiation sources and their dose effect on humans are known, there is still some conflict on their health effect especially on dental restoration. The limited data for radioactive dental materials and their potential risks for patient makes those materials interesting to be investigated. For this purposes, uranium, thorium and potassium activity have been measured in some dental restorative materials, such as resin composites containing silica and zirconia particles as filler loading, using gamma spectrometer system with NaI(Tl) detector.
Źródło:: Acta Physica Polonica A; 2015, 128, 2B; B-34-B-36
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Evaluation of multiple backscattering and saturation thickness of gamma rays
Autorzy:: Akar Tarim, U.
Powiązania:: https://bibliotekanauki.pl/articles/1065647.pdf
Data publikacji:: 2016-07
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 02.50.Ng
25.20.Dc
29.30.Kv
29.40.Mc
Opis:: A Monte Carlo code was written to determine the saturation thickness for multiply scattered gamma rays from aluminium targets. Interactions of incident gamma rays with the energies of 123, 279, 360, 511, 662, 1115, and 1250 keV were simulated. This work aims to design a convenient code which can be used in investigations on gamma backscattering. Obtained results for saturation thickness values have been compared with experimental ones and the Monte Carlo N-particle (MCNP) code results, and showed good agreement. Also, based on the similar behavior of number of multiple scattered photons between these three methods, the expected spectrum of singly or multiply scattered photons which is not possible to observe with experiment has been presented.
Źródło:: Acta Physica Polonica A; 2016, 130, 1; 233-235
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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