Development Status of Electrostatic Switched Radiator

Biter, W. J.; Hess, Stephen; Oh, Sung

doi:10.1063/1.2169180

Cited by 6 publications

(3 citation statements)

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“…Although the fusion reaction between tritium and deuterium is still considered the most interesting among other fusion reactions considered for power generation [1], the one between hydrogen and 11 B nucleus, called proton-boron nuclear fusion reaction (p 11 B) [2], represents a complementary and potentially alternative solution in future advanced schemes. In fact the possibility to generate three alpha particles per single reaction, with a negligible generation of neutrons, makes this type of reaction of interest in many felds of research (for a futuristic nuclear plant [3], in space applications [4], in cancer treatment [5,6], in radioisotope production [7], or in material science).…”

Section: Introductionmentioning

confidence: 99%

A Methodology for the Discrimination of Alpha Particles from Other Ions in Laser-Driven Proton-Boron Reactions Using CR-39 Detectors Coupled in a Thomson Parabola Spectrometer

et al. 2023

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Solid-state nuclear track detectors (CR-39 type) are frequently used for the detection of ions accelerated by laser-plasma interaction because they are sensitive to each single particle. To the present day, CR-39 detectors are the main diagnostics in experiments focused on laser-driven proton-boron (p11B) fusion reactions to detect alpha particles, which are the main products of such a nuclear reaction, and to reconstruct their energy distribution. However, the acceleration of multispecies ions in the laser-generated plasma makes this spectroscopic method complex and often does not allow to unambiguously discriminate the alpha particles generated from p11B fusion events from the laser-driven ions. In this experimental work, performed at the PALS laser facility (600 J, 300 ps, laser intensity 1016 W/cm2), CR-39 detectors were used as main detectors for the angular distribution of the produced alpha particles during a p11B fusion dedicated experimental campaign. Additionally, a CR-39 detector was set inside a Thomson Parabola (TP) spectrometer with the aim to calibrate the CR-39 response for low energetic laser-driven ions originating from the plasma in the given experimental conditions. The detected ion energies were ranging from hundreds of keV to a few MeV, and the ion track diameters were measured for etching times up to 9 hours. The goal of the test was the evaluation of the detectors’ ability to discriminate the alpha particles from the aforementioned ions. Within this study, the calibration curves for protons and silicon low energy ions are accomplished, the overlapping of the proton tracks and alpha particles is verified, and a methodology to avoid this problem is realized.

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Section: Introductionmentioning

confidence: 99%

A Methodology for the Discrimination of Alpha Particles from Other Ions in Laser-Driven Proton-Boron Reactions Using CR-39 Detectors Coupled in a Thomson Parabola Spectrometer

et al. 2023

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“…The significant advantage of micro-variable radiators compared with current variable radiators [2] is that it need much lower actuation voltage. Figure1.…”

Section: Operation Principlementioning

confidence: 99%

Design and Fabrication of Micro-Variable Radiator

Cao

Chen

Wang

et al. 2012

AMM

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Micro-variable Radiator with its small volume, light weight and less power consumption quite meets the requirement of Micro/Nano satellite thermal control. Prototypes fabricated by bulk silicon technology have poor thermal performance owing to their confines of material and process. In this paper, a novel micro-radiator based on laser micro processing technology and polymer material was proposed, its operational principle was introduced and the relationship between structural and thermal performance was analyzed theoretically. A prototype was fabricated by UV laser micro-processing, dip-coating and magnetron sputtering technologies. Test results show that the actuation voltage is 97V and variation of radiation power is about 0.1W.

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“…To meet these goals, thermal control systems will require sophisticated thermal management devices or structures. Current technologies include specialized paints, MEMS, mechanical or electrostatic louvers [1], heaters/radiators, and heat pipes. These approaches tend to suffer from one or more of the following drawbacks: bulkiness, passive mode of operation, complex mechanical/moving parts, and/or high weight.…”

Section: Introductionmentioning

confidence: 99%