Flexible Soldier and Machine Interface for Micro Air Vehicles

Abstract

Standard Form 298 (Rev. 8-98)Prescribed by ANSI Std. Z39.18Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing this collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden to Department of Defense, Washington Headquarters Services, Directorate for Information Operations and Reports (0704-0188), 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ADDRESS. 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 5d. PROJECT NUMBER 5e. TASK NUMBER 5f. WORK UNIT NUMBER The angular distribution of neutrons formed in nuclear fusion reactions of a high-energy deuteron beam with a deuterated polyethylene (CD2) was investigated with a Monte Carlo ion beam-target deposition model. The initial conditions were obtained from a two-dimensional particlein-cell laser-target deposition model. The neutron yield and its angular distribution were studied as a function of peak laser intensity, laser pulse duration and primary target thickness. The proposed scheme for neutron production delivers a typical neutron yield of 10E+5-10E+7 neutrons/ion and 10E+5-10E+7 neutrons/Joule laser energy. REPORT TYPE 1. REPORT DATE (DD-MM-YYYY) TITLE AND SUBTITLE AUTHOR(S) PERFORMING ORGANIZATION REPORT NUMBER PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) SPONSOR / MONITOR'S ACRONYM(S) 9. SPONSORING / MONITORING AGENCY NAME(S) AND ADDRESS(ES) SPONSOR / MONITOR'S REPORT NUMBER(S)12 Laser-target deposition model.A two-dimensional fully relativistic electromagnetic particle-in-cell model (Ref.[1]) was developed. The particle-in-cell model describes the evolution of the target by moving "quasiparticles" representing each species (electrons and ions). The "quasi-particles" are driven by the laser electromagnetic field. To describe the latter, we solve the Maxwell's equations for propagation of electromagnetic wave (in the visible/near IR) through the plasma. The particle-incell model solves the relativistic equations of motion of the charged particles (ions and electrons) from which one can derive detailed information about the particle positions, velocity and energy.Coupling the two parts of the model turned out to be a major problem since the plasma density is very high. Particle-in-cell codes tend to produce "noisy" quantities, such as particle densities and currents. The numerical noise quickly amplifies and the solution is overwhelmed by artificial noise. Therefore, we developed a technique specifically designed to couple a particle-...