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Experimental determination of interaction between the radiation fields of Dragonfly's MMRTG and Titan's environment I: Neutron results
Acta Astronautica ( IF 3.5 ) Pub Date : 2022-09-24 , DOI: 10.1016/j.actaastro.2022.08.048
Teyen Widdicombe , R.A. Borrelli

A pressure vessel was evacuated and filled with an analog Titan atmosphere, in which a source of neutrons was suspended. Readings were taken from a neutron detector in a moderator block below, with the source at various height within the chamber. Neutron attenuation by the atmosphere was not found to be statistically significant, and absorption by surface material was found to be most likely minimal, refuting and tentatively reinforcing the respective modelling conclusions. Ultimately it was found that neutrons from the MMRTG are unlikely to be a problem for Dragonfly's measurements on the surface of Titan, and neutronic modelling should have fidelity sufficient to determine the magnitudes of minor effects.



中文翻译:

蜻蜓MMRTG辐射场与土卫六环境相互作用的实验测定I:中子结果

一个压力容器被抽空并充满了模拟的泰坦大气,其中悬浮了一个中子源。读数来自下方慢化剂块中的中子探测器,其中源在室内的不同高度。大气对中子的衰减没有发现具有统计学意义,并且发现表面材料的吸收很可能是最小的,驳斥并暂时加强了各自的建模结论。最终发现,来自 MMRTG 的中子不太可能成为蜻蜓在土卫六表面测量的问题,并且中子模型应该具有足够的保真度来确定微小影响的大小。

更新日期:2022-09-24
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