Relative contribution of various factors to the formation of the energy spectrum of fast, medium-energy, charged particles and ions transmitted through a thin target with fluctuations of the target thickness

1997 ◽  
Vol 42 (5) ◽  
pp. 529-541 ◽  
Author(s):  
N. N. Koborov ◽  
A. I. Kuzovlev ◽  
V. A. Kurnaev ◽  
V. S. Remizovich
Keyword(s):  
Energy Spectrum ◽  
Charged Particles ◽  
Target Thickness ◽  
Medium Energy ◽  
Thin Target ◽  
Relative Contribution

Determination of stable isotope ratios using nuclear reaction analysis coupled with a particle–gamma coincidence method

2021 ◽  
Author(s):  
Paula Rangel Pestana Allegro ◽  
Márcia de Almeida Rizzutto ◽  
Nemitala Added ◽  
Vitor Ângelo Paulino de Aguiar ◽  
Dennis Lozano Toufen ◽  
...  
Keyword(s):  
Nuclear Reaction ◽  
Gamma Rays ◽  
Charged Particles ◽  
Isotope Ratios ◽  
Nuclear Reaction Analysis ◽  
Stable Isotope Ratios ◽  
Coincidence Method ◽  
Medium Energy ◽  
Gamma Coincidence

This study presents an alternative method to determine isotope ratios using a medium energy accelerator and simultaneously measuring the charged particles and gamma-rays produced in a nuclear reaction.

scholarly journals Ultraintense Laser-Driven Nonthermal Acceleration of Charged Particles in the Near-QED Regime

2021 ◽  
Author(s):  
Yulong Hu ◽  
Baifei Shen ◽  
Jiancai Xu ◽  
Yasuhiro Kuramitsu ◽  
Hideaki Takabe ◽  
...  
Keyword(s):  
Energy Spectrum ◽  
Power Law ◽  
Laser Intensity ◽  
Critical Role ◽  
Charged Particles ◽  
Radiation Reaction ◽  
Intense Laser ◽  
Acceleration Process ◽  
Qed Regime ◽  
Power Law Index

Abstract Here, we have studied the nonthermal acceleration of energetic electrons/protons under the near-QED regime by extending the laser intensity beyond 1023 W/cm2 based on a two-dimensional particle-in-cell simulation. The radiation-reaction (RR) effect plays a critical role and brings a quantum stochastic effect to the charged-particle acceleration process. Background electrons in plasma are accelerated in an intense laser field to several GeVs with strong oscillations and thus radiate γ-ray photons. The emitting γ-photons have a broad energy spectrum with maximal energy up to 3 GeV and result in radiation-reaction trapping of the electrons, forming a relativistic plasma bunch in the plasma channel. The accumulation of electrons and protons produces a charge-separation field for the acceleration/deceleration of charged particles. The accelerated electrons have a nonthermal spectrum with a power-law index of 1.5 with a laser intensity 1023 W/cm2 lower than that in the non-QED regime. As the laser intensity further increases over 1024 W/cm2, the power-law index further drops to 1.2. Moreover, the energy spectrum of accelerated protons has a nonthermal distribution with a power-law index of 0.7, which is much lower than that of electrons in the near-QED regime.

scholarly journals Study of in-Medium Energy Loss with Heavy-Flavour Correlations in pp and Pb-Pb Collisions with ALICE at the LHC

Proceedings ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 43
Author(s):  
Samrangy Sadhu
Keyword(s):  
Monte Carlo ◽  
Energy Loss ◽  
D Mesons ◽  
Charged Particles ◽  
Hadronic Decays ◽  
Medium Energy ◽  
Pp Collisions ◽  
Charmed Baryons ◽  
Azimuthal Correlations ◽  
Place Studies

The azimuthal correlations between heavy-flavour hadrons or heavy-flavour decay electrons with charged particles in Pb-Pb collisions give insight on the modification of charm-jet properties in nucleus-nucleus collisions and the mechanisms through which heavy quarks in-medium energy-loss takes place. Studies in pp collisions, besides constituting the necessary baseline for nucleus-nucleus measurements, are important for testing expectations from pQCD-inspired Monte Carlo generators. In ALICE heavy-flavour hadrons are studied via their fully reconstructed hadronic decays (D mesons and Λ c baryon), via semileptonic decays of charmed baryons ( Λ c , Ξ c ) and via leptons coming from heavy-flavour hadron decays. In particular in the central barrel, η < | 0 . 8 | , the electrons from heavy-flavour hadron decays are investigated. This proceeding will include the study of azimuthal correlations of D mesons with charged particles in pp collisions and heavy-flavour decay electrons with charged particles in pp and Pb-Pb collisions at different energies available at the LHC. The Experimental results will also be compared with the expectations from POWHEG and PYTHIA event generators.

Cusp type electrostatic analyzer for measurements of medium energy charged particles

2006 ◽  
Vol 77 (12) ◽  
pp. 123303 ◽  
Author(s):  
S. Kasahara ◽  
K. Asamura ◽  
Y. Saito ◽  
T. Takashima ◽  
M. Hirahara ◽  
...  
Keyword(s):  
Charged Particles ◽  
Medium Energy ◽  
Electrostatic Analyzer

scholarly journals Air shower simulation for background estimation in muon tomography of volcanoes

2013 ◽  
Vol 2 (1) ◽  
pp. 11-15 ◽  
Author(s):  
S. Béné ◽  
P. Boivin ◽  
E. Busato ◽  
C. Cârloganu ◽  
C. Combaret ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Spatial Distribution ◽  
Energy Spectrum ◽  
Charged Particles ◽  
Cosmic Ray ◽  
Background Estimation ◽  
Air Shower ◽  
Muon Tomography ◽  
Background Effect ◽  
Good Agreement

Abstract. One of the main sources of background for the radiography of volcanoes using atmospheric muons comes from the accidental coincidences produced in the muon telescopes by charged particles belonging to the air shower generated by the primary cosmic ray. In order to quantify this background effect, Monte Carlo simulations of the showers and of the detector are developed by the TOMUVOL collaboration. As a first step, the atmospheric showers were simulated and investigated using two Monte Carlo packages, CORSIKA and GEANT4. We compared the results provided by the two programs for the muonic component of vertical proton-induced showers at three energies: 1, 10 and 100 TeV. We found that the spatial distribution and energy spectrum of the muons were in good agreement for the two codes.

Some characteristics of the medium energy particles produced in -nucleus collisions

1982 ◽  
Vol 60 (5) ◽  
pp. 668-674 ◽  
Author(s):  
A. R. Khan ◽  
U. Ali ◽  
A. Ahmad ◽  
S. Ahmad ◽  
M. Irfan ◽  
...  
Keyword(s):  
Angular Distribution ◽  
Energy Spectrum ◽  
Momentum Distribution ◽  
Emission Characteristics ◽  
Medium Energy ◽  
Emission Frequency

Emission characteristics of 1083 interactions with Nh ≤ 2 produced in 50 GeV/c[Formula: see text]-nucleus collisions have been analysed with regard to the emission frequency, energy spectrum, angular distribution, and momentum distribution, etc., of grey pions, protons, douterons, and tritons. The variation of average emission frequencies of these particles with different parameters has been investigated. Further, an attempt has also been made to check whether the emission characteristics of these particles depend on the type of disintegration.

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