Mean specific heats were determined from 20°C to 800°C for MgO, TiO2, and ZrO2. True specific heats were then calculated assuming that CT=A+BT+CT2. At 350°C the true specific heats were calculated to be MgO 0.276; TiO2 0.210; ZrO2 0.140.
Targets of Mg, V, Cr, and Mn have been bombarded by 8-Mev protons from the 47-in. cyclotron and the reaction particle observed at an angle of 150° to the incident beam. Three levels are assigned to Mg 24 , seven to Mg 25 , and two to Mg 26 . Fourteen levels are reported for V 51 , 15 for Cr, and 15 for Mn 65 .
Twenty energy levels in Al 27 have been found by the magnetic analysis of inelastically scattered protons at 90° from thin targets of aluminum. An analyzed beam of 8.0-Mev protons was utilized for the bombardment. Tentative values for the levels found are 0.
A scattering program at the University of Pittsburgh uses charged particles from the cyclotron (8-Mev protons, 16-Mev deuterons, and 32-mev alpha-particles). An electromagnet focuses the cyclotron beam through an aperture in an 8-ft shielding wall into a scattering laboratory; a second magnet analyzes the beam in energy; a third magnet analyzes the energy of the charged particles produced in the reaction. For 116−in. analyzing slits 1.0 microamperes of 8±0.010-Mev protons are available at the target 31 ft distant from the cyclotron. The reaction particle analyzer can be rotated about the target. The energy dispersion for 5.298-Mev alpha-particles is 0.192 Mev/in. for each analyzer; the momentum resolution is 1 part in 850. The detector is a scintillation counter. The energy determinations at present stage of development are thought to be accurate to ±0.2 percent ascribed to magnet calibration uncertainties. Energies above and below this value are thought to be of the same precision but the actual calibrations have not been completed.
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