The reaction ..pi../sup -/+d..-->..p+..pi../sup -/+..pi../sup -/+(p/sub s/) with emission of a proton forward and one of the ..pi../sup -/ mesons backward in the laboratory system has been studied at a ..pi../sup -/ momentum 3.65 GeV/c. Among the events of this reaction we have identified the production of ..delta../sup 0/ and N/sup asterisk0/ resonances into the forward hemisphere. The values and functional parameters of the isobar production cross sections dsigma/dU' = Aexp(-BU') in the range 0< or =U'< or =0.2 (GeV/c)/sup 2/ are ..delta..sigma = 6.3 +- 0.7 ..mu..b, B = 2.8 +- 2.0 (GeV/c)/sup -2/ for ..delta../sup 0/(1232) and ..delta..sigma = 43.0 +- 4.5 ..mu..b, B = 11.5 +- 2.8 (GeV/c)/sup -2/ for N/sup asterisk0/(1688). The production of the resonances occurs as the result of baryon exchange. Diffraction scattering of the incident pion by a virtual proton is observed. It is shown that with the descent of the nucleon from the mass shell the slope of the diffraction peak decreases.
Hadron correlations are investigated in reactions in which 6.0-GeV/c ..pi../sup -/ mesons produce backward-emitted (in the l.s.) protons from Be, C, Al, Cu, Cd, Pb, and U nuclei. The investigated correlations point to an important role of multiple interactions of the incident particles in cumulative-proton production.
The correlations between identical ..pi../sup -/ mesons produced in the reactions ..pi../sup -/A..--> pi../sup -/..pi../sup -/..pi../sup +/(p)+X (A is a nucleus of Al, Cu, or Pb) have been studied at an incident ..pi../sup -/ momentum of 3.7 GeV/c. The space--time characteristics of the interaction region, i.e., the characteristic dimensions and lifetime of the excited region which emits the ..pi../sup -/ mesons, have been determined.
An algorithm for the automatic handling of numerical files obtained as a result of scanning the photographs of events in a spark chamber is expounded. A comparison is made between the physical parameters characterizing the results of automatic and semiautomatic handling. Certain recommendations are made on carrying out an experiment with allowance for the requirements of automatic handling.