scholarly journals Measurements of Energy Loss of Charded Particles Travelling in Crystalline Materials along the Channeling Directon

2021 ◽  
Vol 12 ◽  
pp. 82
Author(s):  
M. Kokkoris ◽  
R. Vlastou ◽  
C. T. Papadopoulos ◽  
X. Aslanoglou ◽  
S. Kossionides ◽  
...  
Keyword(s):  
Energy Loss ◽  
Computer Simulations ◽  
Charged Particles ◽  
Crystalline Material ◽  
Nuclear Resonance ◽  
Exponential Rate ◽  
Crystalline Materials ◽  
Resonance Reactions ◽  
Light Charged Particles ◽  
Good Agreement

A method for determining the energy loss and mean dechanneling distance of light charged particles traveling along a low index axis of a crystal in the backscattering geometry, is presented. The method is based on nuclear resonance reactions which act as a marker for the range in the backscattering spectra. Computer simulations based on the assumption of an exponential rate of dechanneling of the incoming particles in the crystalline material, are in good agreement with measured spectra. The results of applying this method to protons and alphas in crystals of Si, SiO2, SiC and MgO are discussed and possible improvements are indicated.

scholarly journals The Characteristics of Tracks in Nuclear Research Emulsions

1955 ◽  
Vol 8 (1) ◽  
pp. 129 ◽  
Author(s):  
AJ Herz ◽  
G Davis
Keyword(s):  
Energy Loss ◽  
Development Process ◽  
Silver Halide ◽  
Charged Particles ◽  
Nuclear Research ◽  
The Mean ◽  
Gap Width ◽  
Good Agreement

Formulae are derived giving the dependence of the blob, grain, and gap densities, the total gap length, and the mean gap width in the tracks of charged particles as function of the probability of making a silver halide crystal developable. The growth of the grains during the development process is taken into account. The expressions found are suitable for use in discussions of the effects of changes in emulsion properties, and they show clearly the differences between the various methods of determining the rate of energy loss from the track characteristics. There is good agreement with experiment for both G5 and C2 emulsion.

scholarly journals A Method of Determining Channeling Parameters in Backscattering Geometry

2019 ◽  
Vol 7 ◽  
pp. 122
Author(s):  
M. Kokkoris ◽  
S. Kossionides ◽  
T. Paradellis ◽  
Ch. Zarkadas ◽  
E. N. Gazis ◽  
...  
Keyword(s):  
Energy Loss ◽  
Resonance Phenomenon ◽  
Experimental Setup ◽  
Nuclear Resonance ◽  
Monte Carlo Calculations ◽  
The Past ◽  
Transmission Geometry ◽  
Good Agreement

The energy loss of channeled protons in silicon has been measured in the past in the transmission geometry and was found to be approximately half of the normal loss, thus confirming the equipartition rule. Other measurements however, concerning different crystals (e.g. Ge), deviated from this theory. In the backscattering geometry, the most successful corresponding attempts combined RBS with the nuclear resonance phenomenon. Nevertheless, they involved ether considerable additions to the standard goniometer setup commonly used, or tedious Monte-Carlo calculations, thus limiting their applicability. ïïi the present work, a method for the determination of the energy loss and dechanneling probabilities of axially channeled protons in silicon [100], in the energy range Ep = 1.7-2.6 MeV, is presented. It is carried out in situ, using the same experimental setup and beam properties (size, divergence) with the ones present in the actual analysis of a sample. The results obtained are in good agreement with already existing values in literature.

Light charged particles associated with subthreshold neutral pion emission in the16O+27Al reaction

1993 ◽  
Vol 346 (4) ◽  
pp. 293-296 ◽  
Author(s):  
A. Badala ◽  
R. Barbera ◽  
A. Palmeri ◽  
G. S. Pappalardo ◽  
F. Riggi ◽  
...  
Keyword(s):  
Neutral Pion ◽  
Charged Particles ◽  
Pion Emission ◽  
Light Charged Particles ◽  
27Al Reaction

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

Features of relativistic charged particles produced in catastrophic destruction of heavy emulsion nuclei at 4.5 A GeV

1998 ◽  
Vol 76 (7) ◽  
pp. 559-566 ◽  
Author(s):  
P Singh ◽  
M S Khan ◽  
H Khushnood
Keyword(s):  
Poisson Distribution ◽  
Linear Dependence ◽  
Charged Particles ◽  
Average Multiplicity ◽  
Average Value ◽  
Multiplicity Distributions ◽  
Good Agreement ◽  
Fireball Model

Total disintegration events produced in 4.5 A GeV/c 12C--AgBr reactions are analysed to investigate the characteristics of secondary charged particles produced in such collisions. The results reveal that multiplicity distributions of grey, black, and relativistic charged particles agree with the Poisson distribution. The average multiplicity of grey particles is found to increase with the increasing mass of projectile, while the average value of black particles is found to decrease with the increasing mass of projectile. This result is in good agreement with the prediction of fireball model. Finally, the linear dependence of grey and compound multiplicities on black, heavy, and relativistic charged particles is also observed. PACS No.: 25.70

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