Investigation of production and fission decay of heavy hypernuclei at COSY Jülich

✍ Scribed by H. Ohm; W. Borgs; W. Cassing; M. Hartmann; T. Hermes; L. Jarczyk; B. Kamys; H.R. Koch; P. Kulessa; R. Maier; D. Prasuhn; K. Pysz; Z. Rudy; H.J. Stein; A. Strzalkowski; O.W.B. Schult; Y. Uozumi; I. Zychor

• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 192 KB
• Volume: 629
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/s0375-9474(97)00718-5

✦ Synopsis

The production of very heavy hypernuclei has been investigated at COSY Jfilich in the interaction of protons of i.0 GeV, 1.5 GeV and 1.9 GeV with bismuth and uranium. Identification was based on the detection of fragments from A delayed fission using a recoil-shadow technique which yielded cross sections for production and fission decay of hypernuclei of about 5#b (Bi target) and 20 +4(stat.)_+s*a(syst.)#b (U target). A lifetime of 240 -t-45(stat,) :t:40(syst.) ps has been deduced for the uranium target from the position distribution of fission fragments.