Interaction of stopped antiprotons with copper

Journal Article · Fri Jan 01 04:00:00 EST 1993 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.47.216· OSTI ID:6942790

Jastrzebski, J; Kurcewicz, W; Lubinski, P; Grabowska, A; Stolarz, A ^[1]; Daniel, H; von Egidy, T; Hartmann, F J; Hofmann, P; Kim, Y S ^[2]; Botvina, A S; Golubeva, Y S; Iljinov, A S ^[3]; Riepe, G ^[4]; Plendl, H S ^[5]

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1. Heavy Ion Laboratory and Institute of Experimental Physics, Warsaw University, 02-097 Warsaw (Poland)
2. Physik-Department, Technische Universitaet Muenchen, D-8046 Garching (Germany)
3. Institute for Nuclear Research, Russian Academy of Sciences, 117312 Moscow (Russian Federation)
4. Forschungszentrum Juelich, D-5170 Juelich (Germany)
5. Florida State University, Tallahassee, Florida 32306 (United States)

A natural Cu target was irradiated with the antiproton beam from the Low Energy Antiproton Ring facility at CERN. The 105 MeV/[ital c] [ital [bar p]] beam was completely slowed down inside a thick target producing many radioactive products. Starting shortly after the irradiation and continuing for about one year, this residual activity was counted using off-line gamma-ray spectroscopy techniques. The yields of 40 radioactive reaction products were determined. The charge dispersion and complete mass yield distribution were deduced using a well-established fitting procedure. The shape of the mass yield and, in particular, the average number of removed nucleons, the dispersion of the mass distribution, and its logarithmic slope characterize the average energy deposited during the antiproton-nucleus interaction. We compare these quantities with similar data gathered for other projectiles interacting with natural Cu targets. These comparisons indicate that the average excitation energy of the system formed after the stopped antiproton annihilation is similar to the average excitation energy following 2-GeV proton interaction with Cu nuclei. The observed mass distribution is also compared with the intranuclear cascade calculations.

• OSTI ID: 6942790
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 47:1; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANTINUCLEON REACTIONS
ANTIPROTON REACTIONS
BARYON REACTIONS
COPPER 64 TARGET
DISTRIBUTION
ENERGY RANGE
EVAPORATION MODEL
GAMMA SPECTRA
HADRON REACTIONS
MASS DISTRIBUTION
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 100-1000
NUCLEAR FRAGMENTS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEON REACTIONS
SPALLATION FRAGMENTS
SPATIAL DISTRIBUTION
SPECTRA
TARGETS