scholarly journals Energy dependence of the relative light output of YAlO3:Ce, Y2SiO5:Ce, and YPO4:Ce scintillators

2012 ◽  
Vol 55 (2) ◽  
pp. 187-197 ◽  
Author(s):  
I. V. Khodyuk ◽  
P. A. Rodnyi ◽  
P. Dorenbos
Keyword(s):  
Energy Dependence ◽  
Light Output ◽  
Relative Light Output

scholarly journals HETEROSTRUCTURED ORGANIC SCINTILLATORS WITH A HIGH PULSE-SHAPE DISCRIMINATION CAPABILITY FOR RADIOECOLOGY PROBLEMS

2021 ◽  
pp. 56-60
Author(s):  
I.F. Khromiuk ◽  
N.Z. Galunov ◽  
N.L. Karavaeva ◽  
A.V. Krech ◽  
Ya.I. Polupan ◽  
...  
Keyword(s):  
Pulse Shape ◽  
Optical Transmission ◽  
Light Output ◽  
Pulse Shape Discrimination ◽  
Shape Discrimination ◽  
Discrimination Capability ◽  
Grain Sizes ◽  
Relative Light Output ◽  
High Pulse ◽  
Organic Scintillators

Studies of the relative Light output and optical transmission of organic composite scintillators with different grain sizes were performed. The research results showed that for samples with grains 0.06…0.3 mm in size, in contrast to the samples with larger grains, the relative light output and optical transmission are lower.

Measurement on Light Yield of Liquid Scintillator Based on P-Xylene

2014 ◽  
Vol 513-517 ◽  
pp. 4185-4187
Author(s):  
Li Ping He ◽  
Xuan Luo ◽  
Fang Yu ◽  
Zhi Jun Wei ◽  
Dong Xiao Liu ◽  
...  
Keyword(s):  
Liquid Scintillator ◽  
Light Output ◽  
Fluorescence Emission ◽  
Light Yield ◽  
Emission Spectra ◽  
Fluorescence Emission Spectra ◽  
Sensitive Region ◽  
Relative Light Output

The relative light output of liquid scintillator based on p-xylene (PX) was measured in this paper. The setup for testing on light output was clearly displayed. The results showed that the light yield increased as the addition of the second solute p-bis (o-methylatyryl)- benzene (bis-MSB). Bis-MSB moves the maxmun of fluorescence emission spectra of liquid scintillator from 365nm to 425nm, which is the most sensitive region for the PMT, so the possibility of self-absorption and the loss of light output could be reduced to some extent.

Increasing the relative light output of liquid scintillators by ultrasound

1969 ◽  
Vol 26 (3) ◽  
pp. 338-339
Author(s):  
V. G. Gratsinskii ◽  
V. G. Tyminskii
Keyword(s):  
Light Output ◽  
Relative Light Output

La2Hf2O7:Ti4+ ceramic scintillator for x-ray imaging

2005 ◽  
Vol 20 (3) ◽  
pp. 567-570 ◽  
Author(s):  
Yaming Ji ◽  
Danyu Jiang ◽  
Jianlin Shi
Keyword(s):  
Incident Light ◽  
Synthesis Method ◽  
Light Output ◽  
Optical Transmittance ◽  
Broad Emission Band ◽  
X Rays ◽  
X Ray ◽  
X Ray Imaging ◽  
Charge Transfer Transitions ◽  
Relative Light Output

Transparent ceramic scintillators of La2Hf2O7:Ti4+ were developed by a novel combustion synthesis method. The optical transmittance for a 1.0-mm-thick specimen is about 60% of the incident light, and the x-ray stopping power is also quiet high. The broad emission band centered at 475 nm originates from the oxide-Ti4+ charge-transfer transitions, which renders fast decay time on the order of 10 μs. The highest relative light output has reached about 1.5 times that of Bi4Ge3O12 (BGO) single crystal when excited by 120 kV x-rays.

Proton energy dependence of the light output in gallium nitride light-emitting diodes

2004 ◽  
Vol 51 (5) ◽  
pp. 2729-2735 ◽  
Author(s):  
S.M. Khanna ◽  
D. Estan ◽  
L.S. Erhardt ◽  
A. Houdayer ◽  
C. Carlone ◽  
...  
Keyword(s):  
Gallium Nitride ◽  
Energy Dependence ◽  
Proton Energy ◽  
Light Emitting Diodes ◽  
Light Output ◽  
Light Emitting

ENERGY DEPENDENCE OF THE POLARISATION IN ZERO-FIELD QUANTUM BEATS IN Hβ EMISSION

1979 ◽  
Vol 40 (C1) ◽  
pp. C1-335-C1-337 ◽  
Author(s):  
J. Carmeliet ◽  
J. C. Dehaes ◽  
W. Singer
Keyword(s):  
Energy Dependence ◽  
Quantum Beats ◽  
Zero Field

Luminous Environment and the Perceived Environment

2019 ◽  
pp. 15-21
Author(s):  
Banu Manav
Keyword(s):  
Experimental Studies ◽  
Light Output ◽  
Lighting Design ◽  
Lighting System ◽  
Main Concept ◽  
Healthy Environment ◽  
Perceived Environment ◽  
Efficiency Cost ◽  
Lighting Systems ◽  
User Friendly

In lighting design, the main concept is to achieve a healthy environment, which addresses energy efficiency, cost, maintenance, and quality. User-friendly lighting systems shall be adopted to architecture and interior architecture. User control over the lighting system is important, by dimming or increasing light output, by changing the colour of the light sets the inner atmosphere and affects user mood. Standards and codes on lighting shall also be evaluated by means of these topics. The paper aims to analyse how the luminous environment is affective on the perceived environment. Hence, a series of experimental studies and recent research will be evaluated in regard to understanding and designing luminous environment.

Low-Temperature Operation of Green, Blue and UV InGaN/GaN Multiple-Quantum-Well Light-Emitting Diodes

2003 ◽  
Vol 764 ◽  
Author(s):  
X. A. Cao ◽  
S. F. LeBoeuf ◽  
J. L. Garrett ◽  
A. Ebong ◽  
L. B. Rowland ◽  
...  
Keyword(s):  
Quantum Well ◽  
Light Emitting Diodes ◽  
Multiple Quantum Well ◽  
Light Output ◽  
Localized States ◽  
Multiple Quantum ◽  
Nonradiative Recombination ◽  
Light Emitting ◽  
Temperature Range ◽  
Green Leds

Absract:Temperature-dependent electroluminescence (EL) of InGaN/GaN multiple-quantum-well light-emitting diodes (LEDs) with peak emission energies ranging from 2.3 eV (green) to 3.3 eV (UV) has been studied over a wide temperature range (5-300 K). As the temperature is decreased from 300 K to 150 K, the EL intensity increases in all devices due to reduced nonradiative recombination and improved carrier confinement. However, LED operation at lower temperatures (150-5 K) is a strong function of In ratio in the active layer. For the green LEDs, emission intensity increases monotonically in the whole temperature range, while for the blue and UV LEDs, a remarkable decrease of the light output was observed, accompanied by a large redshift of the peak energy. The discrepancy can be attributed to various amounts of localization states caused by In composition fluctuation in the QW active regions. Based on a rate equation analysis, we find that the densities of the localized states in the green LEDs are more than two orders of magnitude higher than that in the UV LED. The large number of localized states in the green LEDs are crucial to maintain high-efficiency carrier capture at low temperatures.

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