Abstract

Relativistic Electron Beam (REB) (UD approximately=1 MV, Ib approximately=10 kA, tau b=60 ns) injection into gases (He, SF6, He+SF6+H2 mixture and air) in a wide pressure range 1-750 torr (for air 10-3-750 torr) is investigated experimentally. The maximum energy loss of REB in SF6 at P0 approximately=750 torr had order of 1090 Joules (about 40% of the beam energy) and the maximum degree of the beam current compensation by the return current of the order of 0.8 was obtained in the He at P0 approximately=1 torr. The conditions for RE current transportation of the order of 0.85-0.99 through the drift chamber with the length approximately=120 cm are found. All experimental results at the high gas pressures may be explained by the classical theory of single particle REB-gas interaction. In the low gas pressure range the collective effect of interaction become important.

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