A Study of Cosmic-Ray Bursts

Pulse-Height Measurements of Recoils fromB10(n, α)Li7Juren1, Rosenwasser2 1954Phys. Rev.19040View full textAdd to dashboardCite

“…Columnar recombination has been reported high in carbon dioxide 8 and the decrease in pulse height with increasing pressure has been noted earlier. 9 When the carbon dioxide proportion was decreased to 1 percent and the pressure to \\ atmospheres, the optimum voltages for the maximum pulse heights were much lower and in the collecting wire geometry so low that considerable recombination occurred, especially for the Li 7 * ionization electrons. At \\ atmospheres pressure, parallel plate measurements with both the 1 percent and 5 percent carbon dioxide mixtures yielded a He 4 :Li 7 * pulse ratio of 1.778 (av), which is 1.4 percent higher than the ratio of particle energies.…”

On the Nucleon Component in Cosmic Rays

“…The, experimental data (~) and curve (1) are shown in Fig. 1, and we obtain con~ More quantitative studies are now in .progress.…”

Cosmic-Ray Ionization Bursts in an Unshielded 8-Inch Pressurized Sphere at Sea Level

“…These branches had been interpreted by Euler 31 as due respectively to single protons from the local stars and to extensive air showers. The assumption of single long-range alpha particles from stars as well as single protons for the analysis made in 1948 30 was criticized by Fujimoto and Yamaguchi 32 ; and the experiments of Bridge, Hazen, Rossi, and Williams 19 showed that there was a significant contribution to the bursts from the individual stars occurring within the ionchamber. In the present work, the sharpness of the kink between the two branches has been confirmed and a satisfactory interpretation is given involving star processes rather than single high-energy alpha particles.…”