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James Van Allen journal, 1951?-December 1954

Page 48

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Using Cerenkov radiation get the energy of the 184 inches beam as 345+-3 Mev. Proton-proton scattering 200-350 Mev. Differential cross-section independent of angle and beam ((~4 x (10 exponent -27)) (cm exponent 2))/steradian ----------------------------------------------------------------------- Collins (Brookhaven) Expect >2 Bev in 1 pulse / 5 seconds Hope for 5 x (10 exponent 11) protons per pulse in a beam cross-section 8.5 inch radial x 1 inch vertical Use [Kel F? KeI F?] plastic gaskets in vacuum system. ------------------------------------------------------------------------ Liddell - Getting 350 Mev synchrotron at M.I.T. is working (January 1950) pi - μ decay mean lifetime (1.65 +- 0.33 x (11 exponent -8)) seconds scintillation counter, distributed amplifier and high speed oscillograph Trying to get angular distribution of mesons produced in C C (H sub [9? 2?]), (C(D sub 2)), in [rider?] to get hydrogen by difference. Company with Goldberger and Brueckner favor scalar and pseudo scalar theories of meson field
 
Van Allen Papers