Observation of a peak structure in positron spectra from U+Cm collisions

Journal Article · Mon Dec 19 04:00:00 EST 1983 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.51.2261· OSTI ID:5138734

Schweppe, J; Gruppe, A; Bethge, K; Bokemeyer, H; Cowan, T; Folger, H; Greenberg, J S; Grein, H; Ito, S; Schule, R

A narrow peak structure has been observed in positron spectra from U+Cm collisions at bombarding energies near the Coulomb barrier whose origin cannot be associated with established dynamic mechanisms of positron production involving Rutherford trajectories only. The peak's energy is centered at 316 +- 10 keV. Its width of approx.80 keV, dominated by Doppler broadening, implies that the emitting system exists for longer than approx.10/sup -20/ sec.

• Research Organization: Gesellschaft fuer Schwerionenforschung, D-1600 Darmstadt, Federal Republic of Germany; A. W. Wright Nuclear Structure Laboratory, Yale University, New Haven, Connecticut 06511; University of Frankfurt, D-6000 Frankfurt am Main, Federal Republic of Germany; University of Heidelberg
• DOE Contract Number: AC02-76ER03074
• OSTI ID: 5138734
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 51:25; ISSN PRLTA
• Country of Publication: United States
• Language: English

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