Fine structure in the alpha decay of even-even nuclei as an experimental proof for the stability of the [ital Z]=82 magic shell at the very neutron-deficient side

Journal Article · Sun Feb 27 23:00:00 EST 1994 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.72.1329· OSTI ID:5017587

Wauters, J; Bijnens, N; Dendooven, P; Huyse, M; Hwang, H Y; Reusen, G; von Schwarzenberg, J ^[1]; Van Duppen, P ^[2]; Kirchner, R; Roeckl, E ^[3]

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1. LISOL, Instituut voor Kern- en Stralingsfysica, K. U. Leuven, Celestijnenlaan 200 D, B-3001 Leuven (Belgium)
2. CERN, CH-1211 Geneve 23 (Switzerland)
3. Gesellschaft fuer Schwerionenforschung Darmstadt, Postfach 110541, 6100 Darmstadt (Germany)

Fine structure has been observed in the [alpha] decay of [sup 202]Rn, [sup 194,196,198]Po, [sup 186,188]Pb, and [sup 180,182,184]Hg and has led to the identification of low-lying 0[sup +] states in [sup 198]Po, [sup 190,192,194]Pb, [sup 182,184]Hg, and [sup 176,178,180]Pt. The large variation in the hindrance factors of the [alpha] decay to the exicted 0[sup +] state is a proof for the persistence of the [ital Z]=82 shell closure at the neutron-deficient side. Comparing the reduced widths of the [alpha] decays to the ground and excited states offers a unique way to probe the proton particle-hole character of the 0[sup +] states in this region.

• OSTI ID: 5017587
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 72:9; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA DECAY
ALPHA DECAY RADIOISOTOPES
BARYONS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
DECAY
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTARY PARTICLES
ENERGY LEVELS
EVEN-EVEN NUCLEI
EXCITED STATES
FERMIONS
FINE STRUCTURE
GROUND STATES
HADRONS
HEAVY NUCLEI
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LEAD 186
LEAD 188
LEAD 190
LEAD 192
LEAD 194
LEAD ISOTOPES
MATHEMATICAL MODELS
MERCURY 180
MERCURY 182
MERCURY 184
MERCURY ISOTOPES
MILLISEC LIVING RADIOISOTOPES
MINUTES LIVING RADIOISOTOPES
NANOSEC LIVING RADIOISOTOPES
NEUTRON-DEFICIENT ISOTOPES
NUCLEAR DECAY
NUCLEAR MODELS
NUCLEI
NUCLEONS
PARTICLE-HOLE MODEL
PLATINUM 176
PLATINUM 178
PLATINUM 180
PLATINUM ISOTOPES
POLONIUM 194
POLONIUM 196
POLONIUM 198
POLONIUM ISOTOPES
PROTONS
RADIOISOTOPES
RADON 202
RADON ISOTOPES
SECONDS LIVING RADIOISOTOPES