Results 21 to 30 of about 157,734 (293)

Multiple-Collision Free-Electron Laser Compton Backscattering for a High-Yield Gamma-Ray Source

open access: yesApplied Sciences, 2020
We observed multiple-collision free-electron laser (FEL)-Compton backscattering in which a multi-bunch electron beam makes head-on collisions with multi-pulse FELs in an optical cavity, using an infrared FEL system in the storage ring NIJI-IV.
Norihiro Sei, Hiroshi Ogawa, QiKa Jia
doaj   +1 more source

Nuclear enhancement factor in calculation of Galactic diffuse gamma-rays: A new estimate with DPMJET-3 [PDF]

open access: yesAstroparticle Physics, 31, 341-343 (2009), 2009
A new calculation of nuclear enhancement factor, used in estimation of Galactic diffuse gamma-ray flux from proton-proton interaction in order to take account of heavy nuclei included in cosmic-rays and interstellar matter, is presented by use of a Monte Carlo simulator, DPMJET-3.
arxiv   +1 more source

Gamma-ray polarimetry [PDF]

open access: yesNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2003
An astrophysics application of a low noise Double-sided Silicon Strip Detector (DSSD) is described. A Semiconductor Multiple-Compton Telescope (SMCT) is being developed to explore the gamma-ray universe in the 0.1-20 MeV energy band. Excellent energy resolution and polarization sensitivity are key features of the SMCT.
openaire   +4 more sources

Ascertaining gamma ray dosage sensitivity of in vitro cultures in banana cv. Ney Poovan (Musa AB)

open access: yesElectronic Journal of Plant Breeding, 2021
In a vegetatively propagated and parthenocarpic crop like banana, the mutation breeding method offers considerable scope to create genetic variability for crop improvement.
C.Y. Shalini Udaya, K. Soorianathasundaram, M. Ganga, P. Paramaguru and U. Sivakumar
doaj   +1 more source

Study on Induced Current of Iron Plate Irradiated by Pulsed Gamma Rays

open access: yesE3S Web of Conferences, 2018
To obtain the transient current response law of the metal component irradiated by pulsed gamma rays, the pulsed gamma ray irradiation experiment of the iron plate was carried out on “Qiangguang-I” accelerator.
Zuo Yinghong   +3 more
doaj   +1 more source

EXTRAGALACTIC GAMMA-RAYS: GAMMA RAY BURSTS AND BLAZARS [PDF]

open access: yesInternational Journal of Modern Physics A, 2005
The extragalactic gamma-ray sky is dominated by two classes of sources: Gamma-Ray Bursts (GRBs) and radio loud active galactic nuclei whose jets are pointing at us (blazars). We believe that the radiation we receive from them originates from the transformation of bulk relativistic energy into random energy.
openaire   +3 more sources

Monte-Carlo simulation for detecting neutron and gamma-ray simultaneously with CdZnTe half-covered by gadolinium film

open access: yesNuclear Engineering and Technology, 2023
Neutron is an indirectly ionizing particle without charge, which is normally measured by detecting reaction products. Neutron detection system based on measuring gadolinium-converted gamma-rays is a good way to monitor the neutron because the ...
J. Byun   +8 more
doaj  

Simultaneous multi-nuclide imaging via double-photon coincidence method with parallel hole collimators

open access: yesScientific Reports, 2021
Multi-tracer imaging can provide useful information in the definitive diagnosis and research of medical, biological, and pharmaceutical sciences. Single-photon emission computed tomography (SPECT) is one of the nuclear medicine imaging modalities widely ...
Mizuki Uenomachi   +3 more
doaj   +1 more source

The H.E.S.S. View of the Central 200 Parsecs [PDF]

open access: yes, 2006
The inner few hundred parsecs of our galaxy provide a laboratory for the study of the production and propagation of energetic particles. Very-high-energy gamma-rays provide an effective probe of these processes and, especially when combined with data ...
Holland L   +3 more
core   +2 more sources

Gamma-ray binaries [PDF]

open access: yesAstrophysics and Space Science, 2007
Recent observations have shown that some compact stellar binaries radiate the highest energy light in the universe. The challenge has been to determine the nature of the compact object and whether the very high energy gamma-rays are ultimately powered by pulsar winds or relativistic jets.
openaire   +3 more sources

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