urn:nasa:pds:context:instrument:pvmp.lp.lgc 1.0 1.20.0.0 Product_Context 2023-12-11 1.0 Initial creation of the Multiprobe context products urn:nasa:pds:context:instrument_host:spacecraft.pvmp.lp instrument_to_instrument_host 10.1109/TGRS.1980.350287 Oyama, V. I., et al., Pioneer Venus sounder probe gas chromatograph, IEEE Trans. Geosci. Rem. Sens., GE-18, No. 1, 85-92, doi:10.1109/TGRS.1980.350287, Jan. 1980. reference.OYAMAETAL_1980 PIONEER VENUS LARGE PROBE GAS CHROMATOGRAPH Gas Analyzer not applicable not applicable INSTRUMENT OVERVIEW =================== The objective of this experiment was to determine the composition of Venus' lower atmosphere. From these measurements, deductions were made of the gaseous sources of infrared opacity, the degree of differentiation of Venus' interior, the degree of similarity between the solid bodies of earth and Venus, and evolution of Venus' atmosphere. Two gas chromatograph columns were used to analyze samples of the atmosphere during probe descent.