Wide Band Spectrometer

The Wide Band Spectrometer (WBS) consists of three subinstruments that together span the energy range from 2 keV to 100 MeV. They are (1) the soft X-ray spectrometer (SXS), a gas proportional counter filled with Xe and CO2 that covers the 2 to 30 keV band, (2) the hard X-ray spectrometer (HXS), a NaI scintillator that covers the energy range 20 - 600 keV, and (3) the gamma-ray spectrometer (GRS), a pair of identical BGO scintillators (Bi4 Ge3 O12), that cover the 0.2 - 100 MeV band. SXS has a FOV 10 deg square, has a sensitive area of approximately 12 cm**2, divides its energy range into 128 channels, and records 128-channel spectra every 2 s, 2-channel spectra every 0.25 s. The energy resolution at 5.9 keV is approximately 20% (FWHM). The HXS records pulse height data in 32 quadratically spaced channels over the 20 - 400 keV range every 1 s, and 2-channel pulse count data for the bands 20 - 50 keV and 50 - 600 keV every 0.125 s. The GRS has a resolution approximately twice that of the HXS, and records a 128-channel energy-loss spectrum, which is processed via spectral deconvolution to yield the incident gamma- ray spectrum. 128-channel spectra are recorded every 4 s. An assortment of other time resolutions apply for various energy channels. GRS also has detection sensitivity to solar flare neutrons.

宽带光谱仪（WBS）由三个子仪器组成，共同覆盖了从2 keV至100 MeV的能量范围。这些子仪器包括：（1）软X射线光谱仪（SXS），一种填充有氙气和二氧化碳的气体比例计数器，覆盖2至30 keV的波段；（2）硬X射线光谱仪（HXS），一种NaI闪烁体，覆盖20至600 keV的能量范围；（3）伽马射线光谱仪（GRS），一对相同的BGO闪烁体（Bi4Ge3O12），覆盖0.2至100 MeV的波段。SXS的视场为10度平方，敏感区域约为12 cm²，将能量范围划分为128个通道，并每2秒记录一次128通道的光谱，每0.25秒记录一次2通道的光谱。在5.9 keV处的能量分辨率约为20%（半高宽）。HXS以每秒1次记录20至400 keV范围内的脉冲高度数据，以32个平方间隔的通道进行记录，并且每0.125秒记录20至50 keV和50至600 keV波段的2通道脉冲计数数据。GRS的分辨率约为HXS的两倍，并记录128通道的能量损失光谱，通过光谱解卷积处理以获得入射伽马射线光谱。每4秒记录一次128通道的光谱。对于不同的能量通道，还适用一系列其他的时间分辨率。GRS还具有对太阳耀斑中子的探测灵敏度。