Results 51 to 60 of about 8,678 (295)

Characteristics of VHF scintillations in the equatorial anomaly crest region in India [PDF]

open access: yesAnnales Geophysicae, 1995
The characteristics of ionospheric scintillations at Rajkot in the equatorial anomaly crest region in India are described for the years 1987–1991 by monitoring the 244-MHz transmission from the satellite FLEETSAT.
K. N. Pathak   +3 more
doaj   +1 more source

On the low-temperature performances of THGEM and THGEM/G-APD multipliers in gaseous and two-phase Xe

open access: yes, 2011
The performances of THGEM multipliers in two-phase Xe avalanche mode are presented for the first time. Additional results on THGEM operation in gaseous Xe at cryogenic temperatures are provided.
  +25 more
core   +1 more source

Modelling of the radio spectrum evolution in the binary pulsar B1259$-$63 [PDF]

open access: yes, 2015
In this paper we give the first attempt to model the evolution of the spectrum of PSR B1259$-$63 radio emission while the pulsar orbits the companion Be star. As suggested by Kijak et al. (Mon. Not. R. Astron. Soc. 418:L114, 2011a) this binary system can
Dembska, M.   +5 more
core   +2 more sources

Sensitized Triplet Exciton Generation in Nanostructured Polymer Scintillators: Toward Improved γ/Neutron Discrimination

open access: yesAdvanced Functional Materials, EarlyView.
Rapid γ/neutron discrimination through PSD is achieved in liquid droplet containing nanostructured polymeric scintillator where a TTA‐active dye is dissolved. The inclusion of a properly selected and dosed sensitizer metalated porphyrin enhances discrimination sensitivity and speed by doubling the density of annihilating triplets and increasing the ...
Luca Pollice   +9 more
wiley   +1 more source

Scintillations in Southern Europe During the Geomagnetic Storm of June 2015

open access: yesRemote Sensing
The sensitivity of Global Navigation Satellite System (GNSS) receivers to ionospheric disturbances and their constant growth are nowadays resulting in an increased concern of GNSS users about the impacts of ionospheric disturbances at mid-latitudes.
Anna Morozova   +8 more
doaj   +1 more source

Observations of GPS ionospheric scintillations over Wuhan during geomagnetic storms [PDF]

open access: yesAnnales Geophysicae, 2006
During the two geomagnetic storms which occurred on 1 October 2002 and 22 January 2004, the strong ionospheric scintillations of the GPS L1 band were observed at Wuhan station (30.6° N, 114.4° E, 45.8° Dip), which is ...
G. Li   +7 more
doaj   +1 more source

Small-Scale Variations of HI Spectra from Interstellar Scintillatio [PDF]

open access: yes, 2001
I suggest that radio-wave scattering by the interstellar plasma, in combination with subsonic gradients in the Doppler velocity of interstellar HI, is responsible for the observed small-scale variation in HI absorption spectra of pulsars.
C. R. Gwinn   +5 more
core   +3 more sources

Inorganic scintillating materials and scintillation detectors

open access: yesProceedings of the Japan Academy, Series B, 2018
Scintillation materials and detectors that are used in many applications, such as medical imaging, security, oil-logging, high energy physics and non-destructive inspection, are reviewed. The fundamental physics understood today is explained, and common scintillators and scintillation detectors are introduced.
openaire   +3 more sources

A Mechanistic Blueprint for Fast, High‐Yield Green Scintillators Using Conjugated Polymer–Nanocrystal Composites

open access: yesAdvanced Functional Materials, EarlyView.
Conjugated polymer–nanocrystal composites are investigated to develop fast, high‐yield green scintillators. The polymer F8BT enables efficient, ultrafast emission, while blends with non‐emitting HfO2 nanocrystals and luminescent CdZnS/ZnS quantum dots reveal distinct sensitization mechanisms.
Chenger Wang   +13 more
wiley   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

open access: yesAdvanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades   +7 more
wiley   +1 more source

Home - About - Disclaimer - Privacy