| Popis: |
A quadrupole doublet lens refocuses particles of rigidities up to 400 MeV/c per unit charge scattered within an angular range of −15° to +140° from a 30 cm chamber onto a detection surface 3.0 m removed from the target. This system, herein to be called the quadrupole spectrometer, has been developed for the purpose of (1) reduction of noise and background during detection of charged particles, (2) magnetic rigidity band pass filtering and reduction of unwanted or overprolific beam species, (3) small-angle cross section measurements, (4) charge state determinations, and (5) time-of-flight measurements. A general description of the quadrupole spectrometer, discussion of its intended uses and examples of data obtained are presented. |
