scholarly journals Atomic processes in ionic projectiles in plasma: End-of-the-range effects

1990 ◽  
Vol 8 (4) ◽  
pp. 635-641 ◽  
Author(s):  
E. Nardi ◽  
Z. Zinamon
Keyword(s):  
Charge State ◽  
Direct Measurement ◽  
Plasma Column ◽  
Hydrogen Plasma ◽  
Stopping Power ◽  
Atomic Processes ◽  
Power Theory ◽  
Spectroscopic Diagnostics ◽  
Experimental Systems ◽  
Narrow Region

The charge state and the level populations of ionic projectiles that are stopped in hydrogen plasma are calculated in the average ion model. It is shown that in available experimental systems the parameters can be chosen such that the end of the range will occur inside the plasma column. The predicted narrow region over which recombination occurs can be used as a check on plasma stopping-power theory and as a direct measurement of the range, using spectroscopic diagnostics.

scholarly journals Charge state and nonlinear stopping power of heavy ions in a fully ionized plasma

1996 ◽  
Vol 14 (4) ◽  
pp. 781-788 ◽  
Author(s):  
O. Boine-Frankenheim ◽  
C. Stöckl
Keyword(s):  
Charge State ◽  
Heavy Ions ◽  
Stopping Power ◽  
Poisson System ◽  
Atomic Processes ◽  
Coupling Parameters ◽  
Parallel Supercomputers ◽  
New Generation ◽  
Mean Charge ◽  
Good Agreement

Due to the high nonequilibrium charge states specific to heavy ions, the plasma regime with coupling parameters l/ND < 1 and Zp/ND > 1 (ND ∼ number of electrons in a Debye sphere, Zp mean charge state of the projectile) is of interest for the applications. In this regime the stopping power cannot be obtained by a linearization of the Vlasov-Poisson system, but forcing a fully nonlinear treatment. In the present paper the Vlasov-Poisson system is solved numerically by using the capability of the new generation of massively parallel supercomputers. The results are compared with the standard dielectric theory and a binary collision approach. Charge-state calculations are performed, accounting for all relevant features of the atomic processes and the spectra characteristic to heavy ions in dense plasma targets. The results show good agreement with experimental measurement for medium and heavy ions penetrating a Z-pinch device.

scholarly journals Charge-state distributions of chlorine ions interacting with cold gas and with fully ionized plasma

1995 ◽  
Vol 13 (2) ◽  
pp. 293-302 ◽  
Author(s):  
M. Chabot ◽  
D. Gardès ◽  
J. Kiener ◽  
S. Damache ◽  
B. Kubica ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Charge State ◽  
Plasma Column ◽  
Discharge Plasma ◽  
Stopping Power ◽  
Plasma Target ◽  
Charge State Distributions ◽  
Chlorine Ions ◽  
Power Measurements ◽  
Cold Gas

Charge transfer of 4.3 MeV/u chlorine ions passing through a discharge plasma target is used as a probe to determine the plasma density and the ratio of impurities inside the plasma column. Charge-state distributions of 2 MeV/u chlorine ions passing through the plasma are then measured and compared to corresponding measurements in the cold gas. Stopping power measurements are also performed in both cases.

Direct measurement of fixed-charge stopping power for 32-MeVHe1+3in a charge-state nonequilibrium region

1991 ◽  
Vol 43 (13) ◽  
pp. 11370-11373 ◽  
Author(s):  
H. Ogawa ◽  
I. Katayama ◽  
H. Ikegami ◽  
Y. Haruyama ◽  
A. Aoki ◽  
...  
Keyword(s):  
Charge State ◽  
Direct Measurement ◽  
Fixed Charge ◽  
Stopping Power ◽  
A Charge
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