First observation of two-proton radioactivity in {sup 48}Ni

Journal Article · Wed Jun 15 04:00:00 EDT 2011 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.83.061303· OSTI ID:21502749

Pomorski, M; Pfuetzner, M; Dominik, W; Czyrkowski, H; DaPbrowski, R; Mazzocchi, C; Mianowski, S ^[1]; Grzywacz, R ^[2]; Baumann, T; Berryman, J S; Ginter, T; Pereira, J; Stolz, A ^[3]; Johnson, J; Rykaczewski, K P ^[4]; Kaminski, G ^[5]; Kuzniak, A ^[2]; Larson, N; Liddick, S N; Suchyta, S ^[3]

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1. Faculty of Physics, University of Warsaw, PL-00-681 Warsaw (Poland)
2. Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996 (United States)
3. National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824 (United States)
4. Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)
5. Institute of Nuclear Physics PAN, PL-31-342 Krakow (Poland)

The decay of the extremely neutron-deficient {sup 48}Ni was studied by means of an imaging time-projection chamber, which allowed the recording of tracks of charged particles. The decays of six atoms were observed. Four of them clearly correspond to two-proton radioactivity, providing the first direct evidence for this decay mode in {sup 48}Ni. Two decays represent {beta}-delayed proton emission. The half-life of {sup 48}Ni is determined to be T{sub 1/2}=2.1{sub -0.4}{sup +1.4} ms.

• OSTI ID: 21502749
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 6 Vol. 83; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ATOMS
BARYONS
BETA DECAY RADIOISOTOPES
CHARGED PARTICLES
DECAY
DELAYED PROTONS
DRIFT CHAMBERS
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTARY PARTICLES
EMISSION
EVEN-EVEN NUCLEI
FERMIONS
HADRONS
HALF-LIFE
INTERMEDIATE MASS NUCLEI
ISOTOPES
MEASURING INSTRUMENTS
MULTIWIRE PROPORTIONAL CHAMBERS
NEUTRON-DEFICIENT ISOTOPES
NEUTRONS
NICKEL 48
NICKEL ISOTOPES
NUCLEAR DECAY
NUCLEI
NUCLEONS
PARTICLE TRACKS
PROPORTIONAL COUNTERS
PROTONS
RADIATION DETECTORS
RADIOACTIVITY
RADIOISOTOPES
TIME PROJECTION CHAMBERS