The energy spectrum of the deuteron beam along the electrode axis (0 degrees ) in a plasma focus discharge has been determined with a time of flight (TOF) method and with a differential filter method in the ion energy interval E=0.3-9 MeV. The ion TOF method is applied to single-ion pulse events with an ion emission time t(E) that is only weakly dependent on the ion energy E for E>0.3 MeV. The correlation of the ion beam intensity with the filling pressure, the neutron yield and the hard X-ray intensity is also reported

Abstract. In the early 90's, it was discovered that a Plasma Focus (PF) system self-creates a plasma-tarp in which high energy-threshold nuclear-reactions occur at high reaction rates. Short life radioisotopes (SLR)s such as *F "F, 'b, r40, '% have been genaatd (lo6 -10' per pulse} with a PF-machine using 7 kJ energy storage to produce &e plasmas jY radioactivity from the SLRs is measured with rugged, Geiger counters inserted into the PF-chamber, zmd a sp&fic SLR is identified by its half-life. The PF chamba wore discharge) is Sued with a mixture of gases that constitutes the latter plasma-target -beam system, e.g., the elements required to produce specific SLRs through nuclear mactions. In this paper, arguments are presented showing that a modest sized PF-machine, using a 50 -75 kJ fast capacitor-hank, when operated at pulse f@rencies of l-10 Hz can produce 2 10' SLRs/pulse. This paper reports the results of testing a PF as a e breeder of SLRs with dual applications for: (i) Secondary Radioactive Nuclear Beams ion-sources (2 < 35), and (ii) as a breeder of radioisotopes for biomedicine (Z I 10) and/or PET imaging.

Corrections to Nuclear Fusion 33 (1993) 413.

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