Carpet-3 Experiment: Searching for Extrahigh-Energy Gamma Rays from Astrophysical Objects

2021 ◽  
Vol 85 (4) ◽  
pp. 412-414
Author(s):  
V. S. Romanenko ◽  
V. B. Petkov ◽  
Yu. Z. Afashokov ◽  
E. A. Gorbacheva ◽  
D. D. Dzhappuev ◽  
...  
Keyword(s):  
Gamma Rays ◽  
Astrophysical Objects ◽  
Energy Gamma

scholarly journals SEARCH FOR DARK MATTER WITH GAMMA-RAYS: A REVIEW

2013 ◽  
Vol 53 (A) ◽  
pp. 545-549 ◽  
Author(s):  
Aldo Morselli
Keyword(s):  
Dark Matter ◽  
Energy Range ◽  
Gamma Rays ◽  
Gamma Ray ◽  
High Energy ◽  
Space Telescope ◽  
High Energy Gamma ◽  
Astrophysical Objects ◽  
Energy Gamma

Successfully launched in June 2008, the Fermi Gamma-ray Space Telescope, formerly named GLAST, has been observing the high-energy gamma-ray sky with unprecedented sensitivity in<br />the 20MeV ÷ 300 GeV energy range and electrons + positrons in the 7 GeV ÷ 1TeV range, opening a new observational window on a wide variety of astrophysical objects.

INNER SHELL STUDIES USING INELASTIC COINCIDENCE SPECTROSCOPY OF LOW ENERGY GAMMA RAYS

1987 ◽  
Vol 48 (C9) ◽  
pp. C9-823-C9-826
Author(s):  
S. MANNINEN ◽  
K. HÄMÄLÄINEN ◽  
T. PAAKKARI ◽  
P. SUORTTI
Keyword(s):  
Gamma Rays ◽  
Low Energy ◽  
Energy Gamma ◽  
Coincidence Spectroscopy

Quasi-monochromatic and polarized high-energy gamma rays

1964 ◽  
Vol 83 (5) ◽  
pp. 3-34 ◽  
Author(s):  
F.R. Arutyunyan ◽  
V.A. Tumanyan
Keyword(s):  
Gamma Rays ◽  
High Energy ◽  
High Energy Gamma ◽  
Energy Gamma

Evaluation of the uncertainty associated with sample holders in NAA measurements in LAN/IPEN

2019 ◽  
Vol 7 (2A) ◽  
Author(s):  
Guilherme Soares Zahn ◽  
Regina Beck Ticianelli ◽  
Mitiko Saiki ◽  
Frederico Antonio Genezini
Keyword(s):  
Stainless Steel ◽  
Neutron Activation Analysis ◽  
Neutron Activation ◽  
Gamma Rays ◽  
Experimental Error ◽  
Steel Sample ◽  
Low Energy ◽  
Stainless Steel Sample ◽  
Gamma Emission ◽  
Energy Gamma

In IPEN’s Neutron Activation Laboratory (LAN/IPEN), thin stainless steel sample holders are used for gamma spectrometry in NAA measurements. This material is very practical, but its chemical composition may be troublesome, as it presents large amounts of elements with intermediate atomic number, with attenuation factors for low-energy gamma-rays that must not be neglected. In this study, count rates obtained using different sample holders were compared. To accomplish that, an Am-241 source, with 59-keV gamma emission, was used so that low-energy gamma attenuation differences can be determined. Moreover, in order to study the energy dependence of these differences, a Ho-166m source was also used. From these results, it was possible to analyze the experimental error associated to the variations between sample holders, with the aim of introducing an addictive term to the uncertainty analysis of comparative Neutron Activation Analysis results.

scholarly journals Response of LYSO:Ce scintillation crystals to low energy gamma-rays

2015 ◽  
Vol 12 (2) ◽  
pp. 319-324 ◽  
Author(s):  
K. G. Afanaciev ◽  
A. M. Artikov ◽  
V. Yu. Baranov ◽  
M. A. Batouritski ◽  
J. A. Budagov ◽  
...  
Keyword(s):  
Gamma Rays ◽  
Low Energy ◽  
Scintillation Crystals ◽  
Energy Gamma

Low-energy gamma rays from isotopes produced by (n, γ) reactions

1972 ◽  
Vol 10 (1) ◽  
pp. 125-135 ◽  
Author(s):  
M. Bruin ◽  
P. J. M. Korthoven
Keyword(s):  
Gamma Rays ◽  
Low Energy ◽  
Energy Gamma

High-energy gamma rays emission in coincidence with light charged particles from the32S +74Ge reaction at 210 MeV

1996 ◽  
Vol 355 (1) ◽  
pp. 35-39 ◽  
Author(s):  
F. Lucarelli ◽  
N. Gelli ◽  
P. Blasi ◽  
M. Cinausero ◽  
E. Fioretto ◽  
...  
Keyword(s):  
Gamma Rays ◽  
Charged Particles ◽  
High Energy ◽  
High Energy Gamma ◽  
Energy Gamma ◽  
Light Charged Particles

Deflectometric measurement of large mirrors

2014 ◽  
Vol 3 (3) ◽  
Author(s):  
Evelyn Olesch ◽  
Gerd Häusler ◽  
André Wörnlein ◽  
Friedrich Stinzing ◽  
Christopher van Eldik
Keyword(s):  
Gamma Rays ◽  
High Energy ◽  
Spherical Mirror ◽  
Large Space ◽  
Telescope Array ◽  
Spread Function ◽  
Very High Energy ◽  
Energy Gamma ◽  
Concentric Geometry ◽  
Very High

AbstractWe discuss the inspection of large-sized, spherical mirror tiles by ‘Phase Measuring Deflectometry’ (PMD). About 10 000 of such mirror tiles, each satisfying strict requirements regarding the spatial extent of the point-spread-function (PSF), are planned to be installed on the Cherenkov Telescope Array (CTA), a future ground-based instrument to observe the sky in very high energy gamma-rays. Owing to their large radii of curvature of up to 60 m, a direct PSF measurement of these mirrors with concentric geometry requires large space. We present a PMD sensor with a footprint of only 5×2×1.2 m

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