Non-Uniformity of Heavy-Ion Beam Irradiation on a Direct-Driven Pellet in Inertial Confinement Fusion

Leila GHOLAMZADEH; Abbas GHASEMIZAD

Plasma Science and Technology > 2011 > 13(1): 44-49.

Leila GHOLAMZADEH, Abbas GHASEMIZAD. Non-Uniformity of Heavy-Ion Beam Irradiation on a Direct-Driven Pellet in Inertial Confinement Fusion[J]. Plasma Science and Technology, 2011, 13(1): 44-49.

Citation:

Leila GHOLAMZADEH, Abbas GHASEMIZAD. Non-Uniformity of Heavy-Ion Beam Irradiation on a Direct-Driven Pellet in Inertial Confinement Fusion[J]. Plasma Science and Technology, 2011, 13(1): 44-49.

Citation:

Leila GHOLAMZADEH, Abbas GHASEMIZAD. Non-Uniformity of Heavy-Ion Beam Irradiation on a Direct-Driven Pellet in Inertial Confinement Fusion[J]. Plasma Science and Technology, 2011, 13(1): 44-49.

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Non-Uniformity of Heavy-Ion Beam Irradiation on a Direct-Driven Pellet in Inertial Confinement Fusion

Physics Department, Faculty of Science, University of Guilan, Rasht, Iran

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Abstract

Abstract

Heavy-ion-driven fusion (HIF) is a scheme to achieve inertial confinement fusion (ICF). Investigation of the non-uniformity of heavy-ion beam (HIB) irradiation is one of the key issues for ICF driven by powerful heavy-ion beams. Ions in HIB impinge on the pellet surface and deposit their energy in a relatively deep and wide area. Therefore, the non-uniformity of HIB irradiation should be evaluated in the volume of the deposition area in the absorber layer. By using the OK1 code with some corrections, the non-uniformityof heavy-ion beam irradiation for the different ion beams on two kinds of targets were evaluated in 12-, 20-, 60- and 120-beam irradiation schemes. The root-mean-square (RMS) non-uniformity value becomes σRMS= 8. 39% in an aluminum mono-layer pellet structure and σRMS= 6.53% in a lead-aluminum layer target for the 12-uranium-beam system. The RMS non-uniformity for the lead-aluminum layer target was lower than that for the mono-layer target. The RMS and peak-to-valley (PTV) non-uniformities are reduced with the increase in beam number, and low at the Bragg peak layer.
- heavy ion beam,
- deposition energy,
- irradiation non-uniformity,
- inertial confinement fusion,
- Bragg peak layer.

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