Efficiency of Ablation Propulsion by Pulsed Ion Beam

Accession number;05A0909334
Title;Efficiency of Ablation Propulsion by Pulsed Ion Beam
Author; BUTTAPENG CHAINARONG (Nagaoka Univ. Technol.) YAZAWA MASARU (Nagaoka Univ. Technol.) HARADA NOBUHIRO (Nagaoka Univ. Technol.) JIANG WEIHUA (Nagaoka Univ. Technol.) SUEMATSU HISAYUKI (Nagaoka Univ. Technol.) YATSUI KIYOSHI (Nagaoka Univ. Technol.)
Journal Title;Papers of Technical Meeting on Frontier Technology and Engineering, IEE Japan
Journal Code:Z0969A
ISSN:
VOL.FTE-05;NO.30-32.34-39;PAGE.49-52(2005)
Figure&Table&Reference;FIG.5, REF.9
Pub. Country;Japan
Language;English
Abstract;This paper presents the hydrodynamic efficiency of ablation plasma produced by pulsed ion beam on the basis of the ion beam and solid target interaction. We used a one-dimensional hydrodynamic fluid compressible to study ablation acceleration behavior and analyzed it as a rocketlike model in order to investigate its hydrodynamic variables for propulsion applications. These variables were estimated by the concept of ablation driven implosion in terms of ablated mass fraction, implosion efficiency, and hydrodynamic energy conversion. Herein, the energy conversion efficiency of 17.5% was achieved. In addition, the results show maximum energy efficiency of the ablation process (ablation efficiency) of 67% meaning the efficiency with which pulsed ion beam energy-ablation plasma conversion. The effects of ablation depth to hydrodynamic efficiency were also discussed. (author abst.)