OUTLINE
Abstract
2. Description of the Alpha Proton X-ray Spectrometer Techniques
2.1 Alpha Backscattering (Alpha Mode)
2.2 Proton Emission (Proton Mode)
2.3 X-ray Generation (X-ray Mode)
3. Description of the APXS Instrument
3.1 Sensor Head
3.1.1 Alpha-Proton Detector System
3.1.2 Description of the X-ray sensor head
3.1.3 244Cm alpha radioactive sources
3.2 Electronics for the APXS
3.2.1 Alpha-Proton Analog Board
3.2.2 X-ray Analog Board
3.2.3 A/D and D/A/ Board
3.2.4 The "Gatti" Correction
3.2.5 Microcontroler Board
3.2.6 X-ray Detector Bias and Interface Board
4. The APXS Deployment Mechanism
5. Laboratory Measurements, Calibrations and Environmental Tests
6. Magnetic Target Measurements
7.1 Flight Software for the APX Spectrometer
7.1.1 Command Structure of the APX Spectrometer
7.1.2 Data Structure of the APX Spectrometer
7.1.3 Ground Support Equipment and Software
7.2 Data Analysis
7.2.1 Matrix Effects and Choice of Standards
7.2.2 Least Square Analysis and Programs
7.2.4 X-ray Analysis