Electron beam penetration of poly (methyl methacrylate)/colemanite composite irradiated at low earth orbit space radiation environment

2021 ◽  
pp. 51337
Author(s):  
Tayfun Bel ◽  
Shima Mehranpour ◽  
Atilla Volga Şengül ◽  
Zeynep Camtakan ◽  
Nilgun Baydogan
Keyword(s):  
Electron Beam ◽  
Methyl Methacrylate ◽  
Orbit Space ◽  
Space Radiation ◽  
Low Earth Orbit ◽  
Radiation Environment ◽  
Earth Orbit ◽  
Poly Methyl Methacrylate ◽  
Space Radiation Environment

Paramagnetic centers in glasses induced by low earth orbit space radiation

1996 ◽  
Vol 204 (3) ◽  
pp. 253-259 ◽  
Author(s):  
G. Buchmayer ◽  
E. Rädlein ◽  
G.H. Frischat ◽  
W. Beier ◽  
B. Speit
Keyword(s):  
Orbit Space ◽  
Space Radiation ◽  
Low Earth Orbit ◽  
Earth Orbit ◽  
Paramagnetic Centers

Investigating Effect of Space Radiation Environment on Piezoelectric Sensors: Cobalt-60 Irradiation Experiment

2017 ◽  
Vol 1 (1) ◽  
Author(s):  
Mary Anderson ◽  
Andrei N. Zagrai ◽  
Joshua D. Daniel ◽  
David J. Westpfahl ◽  
Dale Henneke
Keyword(s):  
Gamma Radiation ◽  
Radiation Exposure ◽  
Piezoelectric Ceramic ◽  
Structural Damage ◽  
Space Radiation ◽  
Low Earth Orbit ◽  
Space Environment ◽  
Piezoelectric Sensors ◽  
Radiation Environment ◽  
Space Radiation Environment

Piezoelectric sensors are used in many structural health monitoring (SHM) methods to interrogate the condition of the structure to which the sensors are affixed or embedded. Among SHM methods utilizing thin wafer piezoelectric sensors, embedded ultrasonics is seen as a promising approach to assess condition of space structures. If SHM is to be implemented in space vehicles, it is imperative to determine the effects of the extreme space environment on piezoelectric sensors in order to discern between actual structural damage and environmental effects. The near-Earth space environment comprises extreme temperatures, vacuum, atomic oxygen, microgravity, micrometeoroids and debris, and significant amounts of radiation. Gamma radiation can be used to emulate the space radiation environment. In this contribution, the effects of gamma radiation on piezoelectric ceramic sensors are investigated for equivalent gamma radiation exposure of more than a year on low Earth orbit (LEO). Two experiments were conducted in which cobalt-60 was utilized as the source of radiation. Freely supported piezoelectric sensors were exposed to increasing levels of gamma radiation. Impedance data were collected for the sensors after each radiation exposure. The results show that piezoelectric ceramic material is affected by gamma radiation. Over the course of increasing exposure levels to cobalt-60, the impedance frequencies of the free sensors increased with each absorbed dose. The authors propose that the mechanism causing these impedance changes is due to gamma rays affecting piezoelectric, electric, and elastic constants of the piezoelectric ceramic. A theoretical model describing observed effects is presented.

Temporal Telomere and DNA Damage Responses in the Space Radiation Environment

2020 ◽  
Author(s):  
Jared J. Luxton ◽  
Miles J. McKenna ◽  
Lynn E. Taylor ◽  
Kerry A. George ◽  
Sara Zwart ◽  
...  
Keyword(s):  
Dna Damage ◽  
Space Radiation ◽  
Radiation Environment ◽  
Dna Damage Responses ◽  
Space Radiation Environment

Space Radiation Environment Testing of Liquid Crystal Phase Shifter Devices

2016 ◽  
Vol 15 ◽  
pp. 1923-1926 ◽  
Author(s):  
Christopher D. Woehrle ◽  
Derek T. Doyle ◽  
Steven A. Lane ◽  
Christos G. Christodoulou
Keyword(s):  
Liquid Crystal ◽  
Phase Shifter ◽  
Space Radiation ◽  
Crystal Phase ◽  
Radiation Environment ◽  
Liquid Crystal Phase ◽  
Space Radiation Environment
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