Scintillation properties of pure CaF2
The temperature dependence of the decay time and scintillation light yield of pure CaF2 crystal was measured over the temperature range 8-305 K using the multiphoton coincidence counting technique. Pure CaF2 exhibits emission of triplet self-trapped excitons at 280 nm with a slow decay, the time con...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
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2006
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| _version_ | 1797090420547649536 |
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| author | Mikhailik, V Kraus, H Imber, J Wahl, D |
| author_facet | Mikhailik, V Kraus, H Imber, J Wahl, D |
| author_sort | Mikhailik, V |
| collection | OXFORD |
| description | The temperature dependence of the decay time and scintillation light yield of pure CaF2 crystal was measured over the temperature range 8-305 K using the multiphoton coincidence counting technique. Pure CaF2 exhibits emission of triplet self-trapped excitons at 280 nm with a slow decay, the time constant of which changes significantly with temperature. The main decay time constant increases by three orders of magnitude when cooled, from 0.96±0.06 μs at 295 K to 930±40 μs at 8 K. The results obtained demonstrate that the scintillation light yield of pure CaF2 increases with decreasing temperature down to 20 K below which it is roughly constant. At low temperatures the light yield of CaF2 is estimated to be 60% relative to that of pure CaWO4. It is concluded that undoped calcium fluoride is a very attractive target material for experimental searches for rare events based on the detection of phonon and scintillation signals. © 2006 Elsevier B.V. All rights reserved. |
| first_indexed | 2024-03-07T03:18:20Z |
| format | Journal article |
| id | oxford-uuid:b695b065-37ab-408b-b99a-16f5dac1a85f |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T03:18:20Z |
| publishDate | 2006 |
| record_format | dspace |
| spelling | oxford-uuid:b695b065-37ab-408b-b99a-16f5dac1a85f2022-03-27T04:41:55ZScintillation properties of pure CaF2Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:b695b065-37ab-408b-b99a-16f5dac1a85fEnglishSymplectic Elements at Oxford2006Mikhailik, VKraus, HImber, JWahl, DThe temperature dependence of the decay time and scintillation light yield of pure CaF2 crystal was measured over the temperature range 8-305 K using the multiphoton coincidence counting technique. Pure CaF2 exhibits emission of triplet self-trapped excitons at 280 nm with a slow decay, the time constant of which changes significantly with temperature. The main decay time constant increases by three orders of magnitude when cooled, from 0.96±0.06 μs at 295 K to 930±40 μs at 8 K. The results obtained demonstrate that the scintillation light yield of pure CaF2 increases with decreasing temperature down to 20 K below which it is roughly constant. At low temperatures the light yield of CaF2 is estimated to be 60% relative to that of pure CaWO4. It is concluded that undoped calcium fluoride is a very attractive target material for experimental searches for rare events based on the detection of phonon and scintillation signals. © 2006 Elsevier B.V. All rights reserved. |
| spellingShingle | Mikhailik, V Kraus, H Imber, J Wahl, D Scintillation properties of pure CaF2 |
| title | Scintillation properties of pure CaF2 |
| title_full | Scintillation properties of pure CaF2 |
| title_fullStr | Scintillation properties of pure CaF2 |
| title_full_unstemmed | Scintillation properties of pure CaF2 |
| title_short | Scintillation properties of pure CaF2 |
| title_sort | scintillation properties of pure caf2 |
| work_keys_str_mv | AT mikhailikv scintillationpropertiesofpurecaf2 AT kraush scintillationpropertiesofpurecaf2 AT imberj scintillationpropertiesofpurecaf2 AT wahld scintillationpropertiesofpurecaf2 |