None
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DISTRIBUTION IS PRESENTED IN THE BEAM FRAGMENTATION REGIONS.
DISTRIBUTION IS PRESENTED IN THE BEAM FRAGMENTATION REGIONS.
DISTRIBUTION IS PRESENTED IN THE BEAM FRAGMENTATION REGIONS.
Differential and double differential cross sections of positive pion production by 240 MeV protons on carbon and copper nuclei are measured. The energy dependence of differential cross section for copper nucleus at 90 deg angle within the 240-500 MeV energy range of protons and angular dependence of the integrated differential cross section are obtained. It is shown that the differential cross section at 250 MeV is 80 times less than that at 585 MeV
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DATA ON THE SUM OF ELASTIC AND QUASIELASTIC CROSS SECTIONS.
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PRESENTED IN PREPRINT ON FIG 3.
3 H̃e nuclei were observed in the negative beam, produced by 70 GeV protons on an Al target. Five 3 H̃e have been identified among 2.4 · 10 11 particles that passed through the apparatus. Scintillation and Čerenkov counters were used to measure the electrical charge and velocity of particles. The mass of 3 H̃e is found to be M 3 H ̃ e = (1.00 ± 0.03)3m p , the charge is z = (0.99 ± 0.03)2 e . The ratio of differential production cross sections of 3 H ̃ e (P = 20 GeV /c) and π − (P = 10 GeV/c ) equals 2 · 10 −11 . This corresponds to antihelium −3 production cross section d 2 σ 3 H ̃ e / d Ω d P = 2.0 · 10 −35 cm 2 / sr · GeV /c per Al nuclei and 2.2 · 10 −36 cm 2 sr · GeV/ c per nucleon.
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Measurements on the production of intermediate momenta negative pions, negative kaons, and antiprotons by protons of 43 GeV, 52 GeV and 70 GeV on aluminium nuclei are reported.
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No description provided.