Conformer analysis and intramolecular excimer formation with the meso and racemic diastereoisomers of 2,4-di(2-pyrenyl)pentane: comparison of NMR and single-photon-counting data

1987 ◽  
Vol 91 (15) ◽  
pp. 3982-3992 ◽  
Author(s):  
Peter. Reynders ◽  
Herbert. Dreeskamp ◽  
Wolfgang. Kuehnle ◽  
Klaas A. Zachariasse
Keyword(s):  
Single Photon ◽  
Photon Counting ◽  
Single Photon Counting ◽  
Counting Data ◽  
Intramolecular Excimer ◽  
Excimer Formation

The rotational motion of n-(9-Anthroyloxy) fatty acids in phospholipid bilayer vesicles

1983 ◽  
Vol 36 (6) ◽  
pp. 1079 ◽  
Author(s):  
E Blatt ◽  
WH Sawyer ◽  
KP Ghiggino
Keyword(s):  
Phase Transition ◽  
Fatty Acids ◽  
Single Photon ◽  
Photon Counting ◽  
Site Occupancy ◽  
Phospholipid Bilayer ◽  
Time Resolved ◽  
Single Photon Counting ◽  
Counting Data ◽  
Rotational Motions

The rotational motions of a set of n-(9-anthroyloxy) fatty acids (n = 2, 6, 9, 12) in dimyristoyl-phosphatidylcholine vesicles above and below the phase transition are investigated. Above the phase transition, single site occupancy and isotropic rotation of the fluorophores allows extraction and comparison of microviscosities from steady-state and time-resolved polarization measurements. Below the phase transition double exponential fluorescence and anisotropy decays are analysed in terms of microheterogeneity of sites. Comparison with previous reports indicates the caution needed when interpreting single photon counting data in terms of hindered rotational motions and order parameters.

Processing time-correlated single photon counting data to acquire range images

1998 ◽  
Vol 145 (4) ◽  
pp. 237 ◽  
Author(s):  
M. Umasuthan ◽  
A.M. Wallace ◽  
J.S. Massa ◽  
G.S. Buller ◽  
A.C. Walker
Keyword(s):  
Processing Time ◽  
Single Photon ◽  
Photon Counting ◽  
Range Images ◽  
Single Photon Counting ◽  
Counting Data

Single Point PICA Probing with an Avalanche Photo-Diode

2001 ◽  
Author(s):  
Mike Bruce ◽  
Rama R. Goruganthu ◽  
Shawn McBride ◽  
David Bethke ◽  
J.M. Chin
Keyword(s):  
Single Photon ◽  
Single Point ◽  
Photon Counting ◽  
Ring Oscillator ◽  
Time Resolved ◽  
Single Photon Counting ◽  
Photo Diode ◽  
Avalanche Photo Diode ◽  
Photo Multiplier Tube ◽  
Channel Plate

Abstract For time resolved hot carrier emission from the backside, an alternate approach is demonstrated termed single point PICA. The single point approach records time resolved emission from an individual transistor using time-correlated-single-photon counting and an avalanche photo-diode. The avalanche photo-diode has a much higher quantum efficiency than micro-channel plate photo-multiplier tube based imaging cameras typically used in earlier approaches. The basic system is described and demonstrated from the backside on a ring oscillator circuit.

scholarly journals UVscope and its application aboard the ASTRI-Horn telescope

2021 ◽  
Author(s):  
Maria Concetta Maccarone ◽  
Giovanni La Rosa ◽  
Osvaldo Catalano ◽  
Salvo Giarrusso ◽  
Alberto Segreto ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Single Photon ◽  
Photon Counting ◽  
Light Flux ◽  
Cosmic Ray ◽  
High Energy ◽  
Wide Field ◽  
High Energy Astrophysics ◽  
Single Photon Counting ◽  
Photon Counting Mode

AbstractUVscope is an instrument, based on a multi-pixel photon detector, developed to support experimental activities for high-energy astrophysics and cosmic ray research. The instrument, working in single photon counting mode, is designed to directly measure light flux in the wavelengths range 300-650 nm. The instrument can be used in a wide field of applications where the knowledge of the nocturnal environmental luminosity is required. Currently, one UVscope instrument is allocated onto the external structure of the ASTRI-Horn Cherenkov telescope devoted to the gamma-ray astronomy at very high energies. Being co-aligned with the ASTRI-Horn camera axis, UVscope can measure the diffuse emission of the night sky background simultaneously with the ASTRI-Horn camera, without any interference with the main telescope data taking procedures. UVscope is properly calibrated and it is used as an independent reference instrument for test and diagnostic of the novel ASTRI-Horn telescope.

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