From Q-value measurements to mass and structure of proton-rich nuclei in the tin region

Conference · Tue Jan 01 00:00:00 EST 1985

OSTI ID:6042973

Grant, I S; Kirchner, R; Klepper, O; Koslowsky, V T; Larsson, P O; Nolte, E; Nyman, G; Plochocki, A; Rathke, G E; Roeckl, E

For testing shell model predictions of very neutron-deficient nuclei it is important to study the doubly magic nucleus, /sup 100//sub 50/Sn/sub 50/, and its closest neighbors. This paper presents the results of recent experiments which studied the magic nuclei: Z = 50 isotopes and N = 50 isotones; in the vicinity of this doubly magic nucleus. This is a continuation of earlier nuclear-spectroscopy studies carried out at GSI and in Munich. For the lightest nuclei in this region, the experiments concentrated on determining the basic decay properties such as the determination of the decay energies Q and half-lives. The data on Q values can be combined with those from other studies to yield masses of nuclides far from stability. For example, the identification and preliminary study of the new isotope /sup 104/Sn has allowed the masses of nuclei beyond the proton-drip line to be estimated. Nuclear-structure information is derived from both the mass difference data (the Z = 50 proton-shell strength) and from the analysis of fast Gamow-Teller ..beta..-transitions. The experiments were performed using /sup 40/Ca, /sup 58/Ni, and /sup 16/O beams with the energy of approx. = 4, 5 and 9 MeV/u, respectively, obtained from the heavy-ion accelerator UNILAC. The reaction products were investigated with the GSI on-line mass separator. 23 references. (WHK)

• Research Organization: Louisiana State Univ., Baton Rouge (USA); Gesellschaft fuer Schwerionenforschung m.b.H., Darmstadt (Germany, F.R.); Goeteborg Univ. (Sweden); Goettingen Univ. (Germany, F.R.); Lund Inst. of Tech. (Sweden). Dept. of Mathematical Physics
• DOE Contract Number: FG05-84ER40159
• OSTI ID: 6042973
• Report Number(s): DOE/ER/40159-86; CONF-8409143-9; ON: DE85006696
• Resource Relation: Conference: 7. international conference on atomic masses and fundamental constants (AMCO-7), Darmstadt-Seeheim, F.R. Germany, 3 Sep 1984
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CADMIUM 98
BETA DECAY
NEUTRON-DEFICIENT ISOTOPES
PALLADIUM 96
ENERGY LEVELS
RHODIUM 96
RUTHENIUM 94
TELLURIUM 111
TIN 100
TIN 102
TIN 104
TIN 106
TIN 108
CALCIUM 40 REACTIONS
EXPERIMENTAL DATA
FT VALUE
FUSION REACTIONS
GAMMA SPECTRA
HALF-LIFE
ISOTONIC NUCLEI
MASS
MASS DEFECT
NICKEL 58 REACTIONS
NUCLEAR STRUCTURE
OXYGEN 16 REACTIONS
Q-VALUE
THEORETICAL DATA
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CADMIUM ISOTOPES
CHARGED-PARTICLE REACTIONS
DATA
DECAY
ELECTRON CAPTURE RADIOISOTOPES
ENERGY
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
HEAVY ION REACTIONS
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOTOPES
MINUTES LIVING RADIOISOTOPES
NUCLEAR REACTIONS
NUCLEI
NUMERICAL DATA
ODD-ODD NUCLEI
PALLADIUM ISOTOPES
RADIOISOTOPES
RHODIUM ISOTOPES
RUTHENIUM ISOTOPES
SECONDS LIVING RADIOISOTOPES
SPECTRA
TELLURIUM ISOTOPES
TIN ISOTOPES
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