دورية أكاديمية
Temperature quenching in LAB based liquid scintillator
| العنوان: | Temperature quenching in LAB based liquid scintillator |
|---|---|
| المؤلفون: | A. Sörensen, S. Hans, A. R. Junghans, B. v. Krosigk, T. Kögler, V. Lozza, A. Wagner, M. Yeh, K. Zuber |
| المصدر: | European Physical Journal C: Particles and Fields, Vol 78, Iss 1, Pp 1-15 (2018) |
| بيانات النشر: | SpringerOpen, 2018. |
| سنة النشر: | 2018 |
| المجموعة: | LCC:Astrophysics LCC:Nuclear and particle physics. Atomic energy. Radioactivity |
| مصطلحات موضوعية: | Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798 |
| الوصف: | Abstract The effect of temperature changes on the light output of LAB based liquid scintillator is investigated in a range from $$-5$$ -5 to $$30\,^{\circ }$$ 30∘ C with $$\alpha $$ α -particles and electrons in a small scale setup. Two PMTs observe the scintillator liquid inside a cylindrically shaped aluminum cuvette that is heated or cooled and the temperature dependent PMT sensitivity is monitored and corrected. The $$\alpha $$ α -emitting isotopes in dissolved radon gas and in natural Samarium (bound to a LAB solution) excite the liquid scintillator mixtures and changes in light output with temperature variation are observed by fitting light output spectra. Furthermore, also changes in light output by compton electrons, which are generated from external calibration $$\gamma $$ γ -ray sources, is analysed with varying temperature. Assuming a linear behaviour, a combined negative temperature coefficient of $${(-0.29 \pm 0.01)}{\,\%/^{\circ }}\hbox {C}$$ (-0.29±0.01)%/∘C is found. Considering hints for a particle type dependency, electrons show $${(-0.17 \pm 0.02)}{\,\%/^{\circ }}\hbox {C}$$ (-0.17±0.02)%/∘C , whereas the temperature dependency seems stronger for $$\alpha $$ α -particles, with $${(-0.35 \pm 0.03)}{\,\%/^{\circ }}\hbox {C}$$ (-0.35±0.03)%/∘C . Due to a high sampling rate, a pulse shape analysis can be performed and shows an enhanced slow decay component at lower temperatures, pointing to reduced non-radiative triplet state de-excitations. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1434-6044 1434-6052 |
| Relation: | http://link.springer.com/article/10.1140/epjc/s10052-017-5484-3; https://doaj.org/toc/1434-6044; https://doaj.org/toc/1434-6052 |
| DOI: | 10.1140/epjc/s10052-017-5484-3 |
| URL الوصول: | https://doaj.org/article/2cc0b93aa3ac42b0a89a173384bae990 |
| رقم الأكسشن: | edsdoj.2cc0b93aa3ac42b0a89a173384bae990 |
| قاعدة البيانات: | Directory of Open Access Journals |
Find this article in full text from Springer Verlag. 
Full Text Finder | تدمد: | 14346044 14346052 |
|---|---|
| DOI: | 10.1140/epjc/s10052-017-5484-3 |