The Mercury Gamma-Ray and Neutron Spectrometer (MGNS) Onboard the Mercury Planetary Orbiter of the BepiColombo Mission: Design Updates and First Measurements in Space
The Mercury Gamma-Ray and Neutron Spectrometer (MGNS) Onboard the Mercury Planetary Orbiter of the BepiColombo Mission: Design Updates and First Measurements in Space
复制标题
BepiColombo 任务的水星行星轨道飞行器上的水星伽马射线和中子能谱仪 (MGNS)：设计更新和首次太空测量
DOI：
10.1007/s11214-021-00842-7
复制
发表时间：
2021
影响因子：
10.3
通讯作者：
F. Quarati
中科院分区：
文献类型：
--
作者：
I. Mitrofanov;A. Kozyrev;D. Lisov;M. Litvak;A. Malakhov;M. Mokrousov;J. Benkhoff;A. Owens;R. Schulz;F. Quarati
根据信使号使命的最新发现，提出了一套更新的汞伽马和中子谱仪的目标和目的。讨论了采用新型CeBr 3晶体探测γ射线沿着的MGNS的改进设计及其对40 K和K/Th比值探测的益处。然后，MGNS将能够测量浅层地下的元素组成，以便根据经验评估水星起源的最佳模型，以及在地球上永久阴影的极地陨石坑上可能存在的水冰沉积物。我们介绍了在仪器调试阶段和2020年4月第一次飞越地球期间进行的首次太空测量的结果。
An updated set of goals and objectives for the Mercury Gamma and Neutron Spectrometer (MGNS) are presented based on the most recent findings of the MESSENGER mission. The updated design of MGNS with the new CeBr3 crystal for detection of gamma-ray along with its benefits for the detection of 40K and K/Th ratio are discussed. MGNS will then be capable of measuring the elemental composition of shallow subsurface in order to empirically evaluate the fittest model on the origin of Mercury, as well as the presence of possible water ice deposits on the permanently shadowed polar craters on the planet. We present the results of the first measurements in space performed during the instrument commissioning phase and during the first Earth flyby which occurred in April 2020.