Alpha decay of [sup 186]Pb and [sup 184]Hg: The influence of mixing of 0[sup +] states on [alpha]-decay transition probabilities

Journal Article · Wed Nov 30 23:00:00 EST 1994 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.50.2768· OSTI ID:6940332

Wauters, J; Bijnens, N; Folger, H; Huyse, M; Hwang, H Y; Kirchner, R; von Schwarzenberg, J; Van Duppen, P ^[1]

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1. LISOL, Institut voor Kern-en Stralingsfysika, Katholieke Universiteit Leuven, Celestijnenlaan 200 D, B-3001 Leuven (Belgium) Gesellschaft fuer Schwerionenforschung Darmstadt, Postfach 110552, D-64220 Darmstadt (Germany)

Fine structure in the [alpha] decay of mass-separated [sup 186]Pb and [sup 184]Hg has been studied at the GSI on-line mass separator. Alpha singles spectra as well as [alpha]-x-[ital t] and [alpha]-[ital e]-[ital t] coincidence events were collected. The [alpha] decay of [sup 186]Pb revealed feeding to a low-lying 0[sup +] state at 328(12) keV in [sup 182]Hg. This state can be interpreted as being the bandhead of the deformed rotational band observed previously in in-beam studies. In the [alpha] decay of [sup 184]Hg, feeding towards the first excited 2[sup +] state at 153 keV and the 0[sub 2][sup +] state at 478 keV in [sup 180]Pt was observed. The hindrance factor of the [alpha] decay towards the excited 0[sup +] state gives information about the particle-hole character of the states connected in the [alpha] decay. A two-level mixing calculation is introduced. From the mixing in Pt and the [alpha]-decay hindrance factors, small mixing is deduced fro ground stattes of neutron-deficient Hg and Pb nuclei.

• OSTI ID: 6940332
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 50:6; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

663210* -- Ground-State Radioactivity-- (1992-)
663570 -- Nuclear Mass Ranges-- A=150-189-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA DECAY
ALPHA DECAY RADIOISOTOPES
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
BRANCHING RATIO
COLLECTIVE EXCITATIONS
DECAY
DEFORMATION
ELECTRON CAPTURE RADIOISOTOPES
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
EXCITATION
HEAVY NUCLEI
ISOTOPES
LEAD 186
LEAD ISOTOPES
MERCURY 184
MERCURY ISOTOPES
MIXING
NUCLEAR DECAY
NUCLEAR DEFORMATION
NUCLEI
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES