Electron loss cross sections of fluorine negative-ion projectile for modeling of inertial confinement fusion

Autor:	A. C. F. Santos, N. V. de Castro Faria, W. Wolf, M. M. Sant’Anna, L. F. S. Coelho, A. L. F. de Barros, Fabio Zappa
Rok vydání:	2006
Předmět:	Range (particle radiation) Cross section (physics) Argon Chemistry Projectile Ionization General Physics and Astronomy chemistry.chemical_element Electron Atomic physics Nuclear Experiment Inertial confinement fusion Ion
Zdroj:	Journal de Physique IV (Proceedings). 133:757-759
ISSN:	1764-7177 1155-4339
DOI:	10.1051/jp4:2006133152
Popis:	Negative ion beams have been proposed as drivers for inertial confinement fusion (ICF), as high-velocity neutral projectiles produced by photodetachment may efficiently impact and heat up a hydrogen pellet target. Charge-changing cross sections are henceforth needed to estimate the beam attenuation in the residual gases. In this work we analyse cross section measurements for the several electron-loss collision channels of fluorine anions impinging on argon (10-50 keV/u energy range) and producing charge states from Ar + to Ar 4+ . Cross sections for projectile destruction associated to target ionization rise steeply with velocity, displaying a clear energy threshold. This threshold is characteristic of a collision process involving direct interaction between a projectile electron and a target electron.
Databáze:	OpenAIRE
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