Direct measurement of the impulse in a magnetic thrust chamber system for laser fusion rocket

作者：Maeno Akihiro^*; Yamamoto Naoji; Nakashima Hideki; Fujioka Shinsuke; Johzaki Tomoyuki; Mori Yoshitaka; Sunahara Atsushi

来源：Applied Physics Letters, 2011, 99(7): 071501.

DOI：10.1063/1.3626600

An experiment is conducted to measure an impulse for demonstrating a magnetic thrust chamber system for laser fusion rocket. The impulse is produced by the interaction between plasma and magnetic field. In the experiment, the system consists of plasma and neodymium permanent magnets. The plasma is created by a single-beam laser aiming at a polystyrene spherical target. The impulse is 1.5 to 2.2 mu Ns by means of a pendulum thrust stand, when the laser energy is 0.7 J. Without magnetic field, the measured impulse is found to be zero. These results indicate that the system for generating impulse is working.

• 出版日期2011-8-15