Toward directed energy planetary defense

被引：56

作者：

Lublin, Philip ^{[1
]}

Hughes, Gary B. ^{[2
]}

Bible, Johanna ^{[1
]}

Bublitz, Jesse ^{[1
]}

Arriola, Josh ^{[1
]}

Motta, Caio ^{[1
]}

Suen, Jon ^{[1
]}

Johansson, Isabella ^{[1
]}

Riley, Jordan ^{[1
]}

Sarvian, Nilou ^{[1
]}

Clayton-Warwick, Deborah ^{[1
]}

Wu, Jane ^{[1
]}

Milich, Andrew ^{[1
]}

Oleson, Mitch ^{[1
]}

Pryor, Mark ^{[3
]}

Krogen, Peter ^{[4
]}

Kangas, Miikka ^{[1
]}

O'Neill, Hugh ^{[5
]}

机构：

[1] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA

[2] Calif Polytech State Univ San Luis Obispo, Dept Stat, San Luis Obispo, CA 93407 USA

[3] Vorticy Inc, San Diego, CA 92121 USA

[4] MIT, Cambridge, MA 02139 USA

[5] Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93407 USA

来源：

OPTICAL ENGINEERING | 2014年 / 53卷 / 02期

关键词：

asteroid impact; directed energy; laser-phased array; planetary defense; 99942; APOPHIS; ASTEROIDS; ALBEDO; EARTH; SIZE;

D O I：

10.1117/1.OE.53.2.025103

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Asteroids and comets that cross Earth's orbit pose a credible risk of impact, with potentially severe disturbances to Earth and society. We propose an orbital planetary defense system capable of heating the surface of potentially hazardous objects to the vaporization point as a feasible approach to impact risk mitigation. We call the system DE-STAR, for Directed Energy System for Targeting of Asteroids and exploRation. The DE-STAR is a modular-phased array of kilowatt class lasers powered by photovoltaic's. Modular design allows for incremental development, minimizing risk, and allowing for technological codevelopment. An orbiting structure would be developed in stages. The main objective of the DE-STAR is to use focused directed energy to raise the surface spot temperature to similar to 3000 K, sufficient to vaporize all known substances. Ejection of evaporated material creates a large reaction force that would alter an asteroid's orbit. The baseline system is a DE-STAR 3 or 4 (1-to 10-km array) depending on the degree of protection desired. A DE-STAR 4 allows initial engagement beyond 1 AU with a spot temperature sufficient to completely evaporate up to 500-m diameter asteroids in 1 year. Small objects can be diverted with a DE-STAR 2 (100 m) while space debris is vaporized with a DE-STAR 1 (10 m). (C) 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)

引用

页数：18

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