Optimization of the effective light attenuation length of YAP:Ce and LYSO:Ce crystals for a novel geometrical PET concept

2006 ◽  
Vol 564 (1) ◽  
pp. 506-514 ◽  
Author(s):  
I. Vilardi ◽  
A. Braem ◽  
E. Chesi ◽  
F. Ciocia ◽  
N. Colonna ◽  
...  
Keyword(s):  
Light Attenuation ◽  
Attenuation Length

scholarly journals Progress in fabrication of long transparent YAG:Ce and YAG:Ce,Mg single crystalline fibers for HEP applications

CrystEngComm ◽  
2019 ◽  
Vol 21 (11) ◽  
pp. 1728-1733 ◽  
Author(s):  
O. Sidletskiy ◽  
K. Lebbou ◽  
D. Kofanov ◽  
V. Kononets ◽  
Ia. Gerasymov ◽  
...  
Keyword(s):  
Light Attenuation ◽  
Significant Enhancement ◽  
Attenuation Length ◽  
Single Crystalline

A significant enhancement in the light attenuation length in 22–55 cm long YAG:Ce and YAG:Ce,Mg fibers grown by the micro-pulling-down method has been reported.

Influence of Neodymium on the Light Attenuation Length in a Liquid Organic Scintillator

2018 ◽  
Vol 15 (6) ◽  
pp. 630-636 ◽  
Author(s):  
I. R. Barabanov ◽  
L. B. Bezrukov ◽  
G. Ya. Novikova ◽  
E. A. Yanovich
Keyword(s):  
Light Attenuation ◽  
Attenuation Length ◽  
Organic Scintillator ◽  
Liquid Organic Scintillator

Measurement of absolute light yield and determination of a lower limit for the light attenuation length for YAP:Ce crystal

1997 ◽  
Vol 44 (6) ◽  
pp. 2415-2418 ◽  
Author(s):  
A. Del Guerra ◽  
F. de Notaristefani ◽  
G. Di Domenico ◽  
R. Pani ◽  
G. Zavattini
Keyword(s):  
Lower Limit ◽  
Light Attenuation ◽  
Light Yield ◽  
Attenuation Length

Micro-pulling-down growth of long YAG- and LuAG-based garnet fibres: advances and bottlenecks

CrystEngComm ◽  
2021 ◽  
Vol 23 (14) ◽  
pp. 2633-2643
Author(s):  
O. Sidletskiy ◽  
K. Lebbou ◽  
D. Kofanov
Keyword(s):  
Rare Earth ◽  
Crystal Growth ◽  
Light Attenuation ◽  
Technological Advance ◽  
Attenuation Length ◽  
High Quality ◽  
Single Crystalline

A technological advance in shaped μ-PD crystal growth provided us with high-quality single crystalline fibres of rare-earth garnets with the good longitudinal transparency and light attenuation length of up to 1 m.

Predicting cold-water bleaching in corals: role of temperature, and potential integration of light exposure

2020 ◽  
Vol 642 ◽  
pp. 133-146
Author(s):  
PC González-Espinosa ◽  
SD Donner
Keyword(s):  
Coral Bleaching ◽  
Cold Water ◽  
Light Exposure ◽  
Light Attenuation ◽  
Florida Keys ◽  
Cold Temperature ◽  
Warm Water ◽  
Coral Tissue ◽  
Effect Of Temperature ◽  
Type I

Warm-water growth and survival of corals are constrained by a set of environmental conditions such as temperature, light, nutrient levels and salinity. Water temperatures of 1 to 2°C above the usual summer maximum can trigger a phenomenon known as coral bleaching, whereby disruption of the symbiosis between coral and dinoflagellate micro-algae, living within the coral tissue, reveals the white skeleton of coral. Anomalously cold water can also lead to coral bleaching but has been the subject of limited research. Although cold-water bleaching events are less common, they can produce similar impacts on coral reefs as warm-water events. In this study, we explored the effect of temperature and light on the likelihood of cold-water coral bleaching from 1998-2017 using available bleaching observations from the Eastern Tropical Pacific and the Florida Keys. Using satellite-derived sea surface temperature, photosynthetically available radiation and light attenuation data, cold temperature and light exposure metrics were developed and then tested against the bleaching observations using logistic regression. The results show that cold-water bleaching can be best predicted with an accumulated cold-temperature metric, i.e. ‘degree cooling weeks’, analogous to the heat stress metric ‘degree heating weeks’, with high accuracy (90%) and fewer Type I and Type II errors in comparison with other models. Although light, when also considered, improved prediction accuracy, we found that the most reliable framework for cold-water bleaching prediction may be based solely on cold-temperature exposure.

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