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A microcomputer controlled all sky scanning radiometer covering the short wave (0.3–3.0 μm) and long wave (3.0–80.0 μm) regions and using a pyroelectric detector has been constructed for continuous automatic measurement of sky radiance. Angular distributions of short, long, and total wave sky radiance are recorded and plotted at each solar hour angle from which irradiances of tilted surfaces are computer calculated. Measurement of the local earth surface radiance facilitates estimation of short wave earth surface albedo and net income of radiation to variously oriented black surfaces. Total scanning, computation, and plotting time for each hour angle observation is 8 min.

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UCRL-8279In a scintillation-counter experiment the interaction of antiprotons with protons in the energy region 133 to 333 Mev has been studied. Antiprotons, produced internally in 'the Bevatron, channeled externally by a system of magnetic quadrupoles and bending magnets, and identified by time of flight, entered a tar get containing liquid hydrogen. This target was completely surrounded by a system of scintillation counters which detected both scattered antiprotons and annihilation .secondaries. An electrostaticmagnetic velocity spectrometer was used in the external magnetic channel to increase the ratio of antiprotons to pions. The p-p total, elastic, ineastic, and charge-exchange cross sections and the angular distribution of elastic scattering .were measured at each energy. The inelastic cross section is approximately one-half the total cross section at these energies.The results are discussed in connection with current theories.-3-< ANTIPROTON -PROTON GROSS SECTIONSAT 133, 197, 265, AND 333 Mev*