Slowing down for Ion Penetration through Plasmas

2014 ◽  
Vol 703 ◽  
pp. 94-97
Author(s):  
Gui Qiu Wang ◽  
Si Yuan Liu ◽  
Yao Chuan Wang

Slowing down processes for a proton and a carbon ion penetration through plasmas are studied within the dielectric response theory.The results show that the stopping power of ion will increase in lower projectile velocity, while the value of stopping power will decrease for higer velocity, and there is a maximum value for stopping power for some projectile velocity due to the resonace of excitation of plasmas. In addition, the stopping power will have higher value for carbon ion than proton due to the effects of charge states. Introduction

2018 ◽  
Vol 36 (4) ◽  
pp. 442-447
Author(s):  
Luis González-Gallego ◽  
Manuel D. Barriga-Carrasco ◽  
Juan Miguel Gil ◽  
Rafael Rodríguez ◽  
Guadalupe Espinosa

AbstractIn this work, the stopping power of a partially ionized helium plasma due to its free and bound electrons is analyzed for an electron temperature and density in which local thermal equilibrium (LTE) or non-local thermal equilibrium (NLTE) regimes can be possible. In particular by means of collisional-radiative models, the average ionization of the plasma as well as the abundances of different helium species (HeI, HeII, and HeIII) are analyzed in both LTE and NLTE thermodynamic states. The influence of this ionization and of the different ion abundances on the stopping power of the helium plasma is shown to be quite significant. Finally, our theoretical model is compared with experimental results on slowing down of swift argon ions in helium plasma.


2011 ◽  
Vol 38 (6Part29) ◽  
pp. 3768-3769
Author(s):  
D Sanchez-Parcerisa ◽  
A Gemmel ◽  
K Parodi ◽  
O Jäkel ◽  
E Rietzel

Author(s):  
A. Abdesselam ◽  
J.P. Stoquert ◽  
G. Guillaume ◽  
M. Hage-Ali ◽  
J.J. Grob ◽  
...  

2012 ◽  
Vol 57 (11) ◽  
pp. 3629-3641 ◽  
Author(s):  
D Sánchez-Parcerisa ◽  
A Gemmel ◽  
O Jäkel ◽  
K Parodi ◽  
E Rietzel

2006 ◽  
Vol 51 (9) ◽  
pp. 2279-2292 ◽  
Author(s):  
Oksana Geithner ◽  
P Andreo ◽  
N Sobolevsky ◽  
G Hartmann ◽  
O Jäkel
Keyword(s):  

2013 ◽  
Vol 28 (01) ◽  
pp. 1450006 ◽  
Author(s):  
A. BENTABET

The development of an analytical model for calculating the electron stopping power (SP) converging with the experimental data at lower energies is still not completed. The purpose of this work is to suggest a mathematical expression of the range and the stopping power of electrons impinging in solid targets in the energy range up to 30 keV based on the spherical geometric model [A. Bentabet, Vacuum86 (2012) 1855]. The results are in good agreement with those of the literature. The slight discrepancy between the obtained and both the theoretical and experimental results regarding the stopping power at very low energy (E<0.5 keV) is discussed.


2018 ◽  
Vol 31 (2) ◽  
pp. 69
Author(s):  
Saad Nafea Yaqoob ◽  
Bashair Mohammed Saied

       The use of heavy ions in the treatment of cancer tumors allows for accurate radiation of the tumor with minimal collateral damage that may affect the healthy tissue surrounding the infected tissue. For this purpose, the stopping power and the range to which these particles achieved of  Nitrogen (N) in the skin tissue  were calculated by programs SRIM (The Stopping and Range of Ions in Matter),(SRIM Dictionary) [1],(CaSP)(Convolution  approximation for Swift Particles )[2]which are famous programs to calculate stopping power of material and Bethe formula , in the energy range (1 - 1000) MeV .Then  the semi - empirical formulas to calculate the stopping power and range of Nitrogen ions in the skin tissue were founded from fitting for average the values which calculated by using these programs using (MATLAB2016) program,the maximum value of energy for Nitrogen ions can lose along its path in skin tissue is founded and the  range correspond to this value, the maximum range for Nitrogen ions can be reached in the skin tissue is founded too .The importance of the research is to know the data of thes particles and their use in treatment without causing a bad effect on the patient.  


2000 ◽  
Vol 7 (7) ◽  
pp. 2884-2893 ◽  
Author(s):  
Carlo Cereceda ◽  
Claude Deutsch ◽  
Michel De Peretti ◽  
Michel Sabatier ◽  
Hrachya B. Nersisyan

2001 ◽  
Vol 14 (3) ◽  
pp. 317-322 ◽  
Author(s):  
T. Bergen ◽  
A. Brenac ◽  
F. Chandezon ◽  
C. Guet ◽  
H. Lebius ◽  
...  

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