Results 251 to 260 of about 5,756,769 (295)

Improving Light Yield Measurements for Low-Yield Scintillators

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2019
Light power spectra are introduced as a new tool for relative light yield (LY) determinations. Light event spectra have commonly been used for this purpose. Theoretical background supporting this change is provided. It is shown that the derivative of a light power spectrum can provide a reliable LY measurement at levels as low as 2% of those for high ...
Minfang Yeh, S Hanß
exaly   +4 more sources

Some of the next articles are maybe not open access.

Related searches:

Study of the light yield of LuAP:Ce scintillating crystals

1996 IEEE Nuclear Science Symposium. Conference Record, 2002
We have obtained optically clear samples of LuAP:Ce from the Institute of Physical Research, Ashtarak, Armenia, measuring up to 5/spl times/5/spl times/40 mm/sup 3/. The photo electron yield for a number of these samples was measured with a Philips XP2020Q photomultiplier tube, and 556 photo electrons per MeV was obtained for the best samples.
Tavernier, Stefaan, Bruyndonckx, Peter, Ruru, Chen, Tallouf, Fouad   +3 more
openaire   +2 more sources

Loss of quantum yield in extremely low light

Planta, 2004
It has generally been assumed that the photosynthetic quantum yield of all C3 plants is essentially the same for all unstressed leaves at the same temperature and CO2 and O2 concentrations. However, some recent work by H.C. Timm et al. (2002, Trees 16:47-62) has shown that quantum yield can be reduced for some time after leaves have been exposed to ...
Miko U F, Kirschbaum, Christian, Ohlemacher, Manfred, Küppers   +2 more
openaire   +2 more sources

Light yield improvement in lead tungstate

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2005
Abstract A new approach to the possibilities of increase in the light yield (LY) of scintillations in lead tungstate (PWO) is discussed. The abrupt LY decrease above 200 K is connected with the start of rotations of WO 4 tetrahedra which disturbs electrostatic separation between non-equilibrium electrons and holes, thus accelerating their non ...
Nikolay V. Klassen, Nikolay P. Kobelev, Sergey I. Rybchenko, Semion Z. Shmurak, Ivan M. Shmyt’ko, Vitaliy V. Sinitsyn, Galina K. Strukova   +6 more
openaire   +1 more source

Scintillation light yield of BaF2:Ce

Optical Materials, 2009
Abstract BaF 2 :Ce scintillator is a well-known, reasonably fast and efficient scintillator characterized by a decent stopping power and availability of large size crystals. In this communication we report scintillation light yield measurements on a number of BaF 2 :Ce samples cut from one larger boule.
Sebastian Janus, Andrzej J. Wojtowicz
openaire   +1 more source

Light, photosynthesis and yield in blueberries.

2018
Abstract In this chapter, a global vision of the physiology (functioning) of a blueberry plant is described with regard to the generation and distribution of carbohydrates. The factors that are involved in dry matter production and its partitioning among the various plant organs are discussed, as well as the effect of several environmental ...
J. B. Retamales, J. F. Hancock
openaire   +1 more source

Measuring the absolute light yield of scintillators

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2005
Abstract The absolute light yield of four different scintillation materials measured with two photomultiplier tubes and two avalanche photodiodes is presented. Commonly, the photoelectron yields and electron–hole pair yields are corrected for the quantum efficiency of the detector, as specified by the manufacturer, to obtain the absolute photon yield.
J.T.M. de Haas, P. Dorenbos, C.W.E. van Eijk   +2 more
openaire   +1 more source

Determination of the scintillation light yield for NaF

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1988
Abstract An upper limit of the scintillation light yield for a NaF crystal is determined by means of a separate scintillators measurement in the single-photon method. The upper limit thus found using a 60 Co source is equal to 10 −6 of that of NaI(Tl).
M. Moszynski, Th. Lindblad
openaire   +1 more source

Light-Yield Improvement Trends in Mixed Scintillation Crystals

Physica Status Solidi A, 2014
The behavior of light yield in a wide range of inorganic scintillation crystals formed by isovalent substitution of anions or cations was investigated. The correlation between improvement of light yield in mixed crystals, and the ratios of volumes occupied by the competing atoms (ions) has been analyzed. A phenomenological approach to the prediction of
Andrei Belsky, Oleg Sidletskiy
exaly   +2 more sources

Light Yield and Light Collection Uniformity

2018
Given the large size of the CsI[Na] detector, a crucial calibration was to probe the light collection uniformity along the crystal. A 241Am source was placed on the outside of the copper can at nine equally spaced positions along the length of the CsI[Na] detector to measure the light collection uniformity in the CsI[Na] crystal.
openaire   +1 more source