NIRS3: the near infrared spectrometer on Hayabusa2
NIRS3: the near infrared spectrometer on Hayabusa2
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NIRS3：隼鸟二号上的近红外光谱仪
DOI：
10.1007/s11214-017-0341-0
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发表时间：
2017
影响因子：
10.3
通讯作者：
T
中科院分区：
文献类型：
--
作者：
Iwata;T.;Kitazato;K.;Abe;M.;Ohtake;M.;Arai;T.;Arai;T.;Hirata;N.;Hiroi;T.;Honda;C.;Imae;N.;Komatsu;M.;Matsunaga;T.;Matsuoka;M.;Matsuura;S.;Nakamura;T.;Nakato;A.;Nakauchi;Y.;Osawa;T.;Senshu;H.;Takagi;Y.;Tsumura;K.;T
NIRS 3：近红外分光仪安装在隼鸟2号航天器上，以在1.8至3.2微米的近红外波长观测目标C型小行星162173 Ryugu。其目的是获得反射光谱，以检测水化和氢氧化物矿物在3 μ m波段的吸收带。我们采用了一个线性图像传感器与砷化铟（InAs）光电二极管和冷却系统与被动散热器，以实现188 K（）的光学温度，这使得保持足够的灵敏度和噪声水平在3 μm波长范围内。我们对NIRS3飞行模型（FM）进行了地面性能测试，以确认其基线规格。这些结果表明，信噪比（SNR）等属性符合科学要求，可以确定小行星表面的含水蚀变程度（如CM或CI球粒陨石）和热变质阶段。
NIRS3: The Near Infrared Spectrometer is installed on the Hayabusa2 spacecraft to observe the target C-type asteroid 162173 Ryugu at near infrared wavelengths of 1.8 to 3.2 μm. It aims to obtain reflectance spectra in order to detect absorption bands of hydrated and hydroxide minerals in the 3 μm-band. We adopted a linear-image sensor with indium arsenide (InAs) photo diodes and a cooling system with a passive radiator to achieve an optics temperature of 188 K (), which enables to retaining sufficient sensitivity and noise level in the 3 μm wavelength region. We conducted ground performance tests for the NIRS3 flight model (FM) to confirm its baseline specifications. The results imply that the properties such as the signal-to-noise ratio (SNR) conform to scientific requirements to determine the degree of aqueous alteration, such as CM or CI chondrite, and the stage of thermal metamorphism on the asteroid surface.