Bubble density data are presented for high-energy pion and proton tracks in a 2-liter sensitivity stabilized bubble chamber filled with CBrF/sub 3/ exposed to a 16-Bev/c pi /sup -/ beam of the CERN proton synchrotron. The particles produced in K/sup 0/ yields pi /sup +/ + pi /sup -/ and LAMBDA / sup 0/ yields p + pi /sup -/ were identified, and the results are plotted vs. gamma -l for 14 K/sup 0/ decays and 4 LAMBDA /sup 0/ decays. The plot shows a relativistic increase of density with energy as well as the expected decrease at low energies and fits the equation = 0.056/ beta /sup 2/ STAlog( gamma /sup 2/-1) + 15- beta /sup 2/!. (D.L.C.)
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